Mechanical properties
Browse 60 curated documents about mechanical properties in The Archive — the 2RA-Edition digital library for engineering and scientific research. This collection of books, journal articles, theses, reports, and technical documents on mechanical properties spans extractive metallurgy, mining engineering, chemistry, and applied science. Every document is searchable in full text; sign in to read, download, ask AI questions about any document, or generate cited research drafts with the AI Researcher.
Effect of vibratory assisted severe surface plastic deformation (VA–SPD) method on Ti6Al4V alloy: a mechanical characterization
Erhan SELÇUK, Kerim Emre ÖKSÜZ
This study investigates the effect of the vibratory assisted severe surface plastic deformation (VA–SPD) method on the mechanical properties of Ti6Al4V alloy. The primary objective was to assess the enhancements in mechanical characterization resulting from this innovative surface modification technique. A systematic approach involving experimental procedures was adopted to analyze the material's
Void formation due to gas evolution during the recycling of 2009 Polymer Deg
J.C. Arnold, S. Alston
During processing of recycled ABS and ABS/HIPS blends, voiding defects can occur within the resulting material which can result in deterioration of mechanical properties. The voids were previously thought to be caused by the evolution of volatile substances during processing. This study investigated the recycling of post-consumer ABS from a variety of types of WEEE. The mechanical properties of th
The use of FTIR mapping to assess phase distribution in mixe 2010 Polymer Te
J.C. Arnold, T. Watson
Attenuated total internal reflection FTIR mapping was used to examine the coarse microscopic two-phase structure seen with some blended and recycled polymers. The blends studied were virgin and recycled ABS, HIPS and polycarbonate, typical of waste electrical and electronic plastics. The method was compared to optical microscopy both before and after etching with chromic acid. It was found that wh
Study of the physico chemical properties of recycled polym 2013 Resources C
Joana Beigbedera, Didier Perrin
Recycling of plastics from waste electrical and electronic equipment (WEEE) requires large scale high-performance sorting and identification technologies. The aim of this project is to evaluate the sorting performances of near infrared (NIR) devices, developed by the company PELLENC ST, for three styrenic polymers from WEEE: acrylonitrile-butadiene-styrene (ABS), high-impact polystyrene (HIPS) and
Recycling of acrylonitrile butadiene styrene ABS copolyme 2015 Polymer Deg
Jia Wang, Yingchun Li
The effect of adding an epoxy-based chain extender (CE) on the properties of recycled acrylonitrile butadiene styrene (rABS) copolymers has been studied. At the beginning of this work, we investigated the difference of properties between rABS and virgin ABS, and then a possible aging mechanism was proposed. Various characterization techniques including attenuated total reflection Fourier transform
Influence of impurities on the performances of HIPS recycled f 2016 Waste Ma
Didier Perrin, Olivier Mantaux
In order to produce a high quality recycled material from real deposits of electric and electronic equipment, the rate of impurities in different blended grades of reclaimed materials has to be reduced. Setting up industrial recycling procedures requires to deal with the main types of polymers presents in WEEE (Waste Electric and Electronic Equipment), particularly High Impact Polystyrene (HIPS) a
Toward recycling unsortable post consumer WEEE stream C 2021 Journal of C
Imane Belyamani, Joachim Maris
The work reported here is the first study aimed at providing a full screening of a real unsortable non-recycled post-consumer WEEE stream free of brominated flame retarded plastics, separated using on-line X-ray detection, toward its recycling. In the existing sorting lines, up to 40% of plastics from waste electrical and electronic equipment (WEEE) stream can be rejected, herein named unsortable
A sustainable approach toward mechanical recycling unsortable p 2024 Waste M
I. Belyamani, S. Bourdon
While near-infrared (NIR) spectroscopy in post-consumer waste electrical and electronic equipment (WEEE) recycling accurately separates white or clear polymers, 40% containing dark plastics, termed ’unsortable WEEE,’ are excluded from sorting lines and therefore incinerated or landfilled, causing environmental concerns. This study investigates the potential of using non-reactive and reactive copol
Influence of Austempering Temperatures on the Microstructure and Mechanical Properties of Austempered Ductile Cast Iron
Regita Bendikiene, Antanas Ciuplys
The influence of the austempering temperatures on the microstructure and mechanical properties of austempered ductile cast iron (ADI) was investigated. ADI is nodular graphite cast iron, which owing to higher strength and elongation, exceeds mechanical properties of conventional spheroidal graphite cast iron. Such a combination of properties is achieved by the heat treatment through austenitizatio
The Effect of Cryogenic Treatment and Tempering Duration on the Microstructure and Mechanical Properties of Martensitic Stainless Steel 13Cr-2Ni-2Mo
Muhammad R. R. Fatih, Hou-Jen Chen
Martensitic stainless steel (MSS) is widely used in several parts of automobiles where high strength, hardness, and corrosion resistance are required. However, the metastability of retained austenite can transform into martensite under severe deformation, adversely affecting material properties. Cryogenic treatments (CTs) have been extensively employed in iron-based alloys for fastener application
Recent Progress of Low and Medium-Carbon Advanced Martensitic Steels
Koh-ichi Sugimoto
This article introduces the microstructural and mechanical properties of low and medium-carbon advanced martensitic steels (AMSs) subjected to heat-treatment, hot- and warm-working, and/or case-hardening processes. The AMSs developed for sheet and wire rod products have a tensile strength higher than 1.5 GPa, good cold-formability, superior toughness and fatigue strength, and delayed fracture stre
Enhanced Microstructural and Mechanical Properties of Mig Welded Al 7075 Alloy Under Longitudinal Vibrations
Teodor Machedon-Pisu, Mihai Machedon-Pisu
In many areas such as the automotive, aircraft, and building industries, the high-strength aluminum alloy Al 7075 is frequently used due to its appropriate properties as a lightweight structural material. However, due to modest weldability, it is challenging to obtain high-quality welds with suitable mechanical properties, as cracks are generated while welding. Moreover, in order to avoid post-wel
Comparative Analysis of Mechanical Properties and Microstructure of 7B52 Aluminum Alloy Laser-MIG Hybrid Welding and MIG Welding Joints
Yu Lu, Dafeng Wang
Laser-MIG hybrid welding and MIG welding were carried out on 7B52 aluminum alloy, and the microstructure and mechanical properties of the joints were compared and analyzed. The results show that the average grain sizes of laser-MIG hybrid welding, MIG welding, and the laser weld zone are 18.38 µm, 24.16 µm, and 15.96 µm, respectively. The width of the HAZ of the laser zone is lower than that of th
Effect of Ultrasonic Frequency Pulse Current on the Microstructure and Mechanical Properties of Ti6Al4V TIG Welded Joints
Wanghui Xu, Xiaoyu Cai
To enhance the performance of Ti6Al4V titanium alloy joints, ultrasonic frequency pulsed TIG welding was employed. The microstructure and mechanical properties of the joints were systematically investigated. Results show that the weld microstructure is predominantly composed of acicular α phase, lath α phase, and a minor amount of β phase. Compared with conventional TIG welding, the application of
Additive Manufacturing for Rapid Sand Casting: Mechanical and Microstructural Investigation of Aluminum Alloy Automotive Prototypes
Silvia Cecchel, Giovanna Cornacchia
The automotive industry is undergoing a rapid evolution to meet today’s challenges; therefore, continuous innovation and product development are needed. Validation tests on prototypes play a crucial role in moving new components into industrial production. There is also a pressing need for faster prototyping processes. In this context, rapid sand casting (RSC), based on additive manufacturing tech
Mechanical and Corrosion Properties of AA2024 Aluminum Alloy with Multimodal Gradient Structures
Zhenwei Xie, Liexing Zhou
Enhancing the strength and toughness of aluminum alloys using microstructure optimization remains a key challenge. In this study, an AA2024 aluminum alloy with a double-layer multi-gradient structure was fabricated using 50% constrained deformation and single-stage peak aging at 150 ◦C. Microstructural and compositional analysis was performed using SEM, XRD, and TEM to investigate grain structures
The Effect of Extrusion and Heat Treatment on the Microstructure and Tensile Properties of 2024 Aluminum Alloy
Qilun Li, Xiaobo Zhang
Hot extrusion forming is one of the best cost-effective processing methods to obtain high-strength aluminum alloys. In order to obtain high performance 2024 aluminum alloy for the aero and automobile industries, this research comprehensively uses heat treatment and reverse isothermal extrusion technology to prepare 2024 alloy. The effects of homogenization, extrusion and post-extrusion annealing t
Structures and Mechanical Properties of Some Dual-Phase Steels with Low Manganese Content
Constantin Dulucheanu, Traian Lucian Severin
In recent years, to reduce car costs, research has been conducted on dual-phase steels with low manganese content (below 1.0%). This study investigated the influence of technological parameters of heat treatment (heating temperature and cooling medium) on such steels’ structures and mechanical properties. The ferrite-martensitic structures, specific for dual-phase steels, were obtained by intercri
Microstructural Characteristics and Strengthening Mechanisms of Ferritic–Martensitic Dual-Phase Steels: A Review
Farzad Badkoobeh, Hossein Mostaan
Ferritic–martensitic dual-phase (DP) steels are prominent and advanced high-strength steels (AHSS) broadly employed in automotive industries. Hence, extensive study is conducted regarding the relationship between the microstructure and mechanical properties of DP steels due to the high importance of DP steels in these industries. In this respect, this paper was aimed at reviewing the microstructur
Metal Matrix Composites
Mihail Kolev
Metal matrix composites (MMCs) are engineered multiphase materials composed of a continuous metallic matrix that contains deliberately introduced reinforcing phases, aimed at enhancing various properties such as strength, stiffness, and wear resistance. The objective of this paper is to explore the characteristics, advantages, and applications of MMCs derived from different metal bases including a
Towards High-Strength Transparent Glass-Ceramics: Processing, Microstructure, and Applications
Ivan Veselov, Georgiy Shakhgildyan
Glass-ceramics are inorganic, non-metallic materials obtained by controlled crystallization of glasses through different processing routes; they contain at least one functional crystalline phase together with a residual glass, and the crystallized fraction may range from trace levels to nearly complete crystallization. Transparent glass-ceramics (TGCs) constitute the optically transparent subset o
Additive Manufacturing of Ceramics and Ceramic-Based Composites: Processing, Properties, and Engineering Applications
Subin Antony Jose, John Crosby
Ceramics are widely evaluated for their extreme hardness, high-temperature stability, and corrosion resistance, which enable applications in harsh service environments. However, these same properties, high melting points, brittleness, and low thermal shock resistance, make conventional manufacturing of complex ceramic components difficult and expensive. Traditional processes often require costly d
3D Printing of Thermoplastic Elastomers: Role of the Chemical Composition and Printing Parameters in the Production of Parts with Controlled Energy Absorption and Damping Capacity
Marina León-Calero, Sara Catherine Reyburn Valés
Additive manufacturing (AM) is a disruptive technology that enables one to manufacture complex structures reducing both time and manufacturing cost. Among the materials commonly used for AM, thermoplastic elastomers (TPE) are of high interest due to their energy absorption capacity, energy efficiency, cushion factor or damping capacity. Previous investigations have exclusively focused on the optim
Structural and Phase Transformations and Physical and Mechanical Properties of Cu-Al-Ni Shape Memory Alloys Subjected to Severe Plastic Deformation and Annealing
Alexey E. Svirid, Vladimir G. Pushin
Using the methods of electron microscopy and X-ray analysis in combination with measurements of the electrical resistance and magnetic susceptibility, the authors have obtained data on the peculiar features of pre-martensitic states and martensitic transformations, as well as subsequent decomposition, in the alloys with shape memory effect of Cu–14wt%Al–3wt%Ni and Cu–13.5wt%Al–3.5wt%Ni. For the fi
Design and Development of High-Strength and Ductile Ternary and Multicomponent Eutectoid Cu-Based Shape Memory Alloys: Problems and Perspectives
Vladimir G. Pushin, Nataliya N. Kuranova
An overview is presented on the structural and phase transformations and physical and mechanical properties of those multicomponent copper-based shape memory alloys which demonstrate attractive commercial potential due to their low cost, good shape memory characteristics, ease of fabrication, and excellent heat and electrical conductivity. However, their applications are very limited due to brittl
Cryogenic Treatment of Martensitic Steels: Microstructural Fundamentals and Implications for Mechanical Properties and Wear and Corrosion Performance
Peter Jurˇ ci, Ivo Dlouhý
Conventional heat treatment is not capable of converting a sufficient amount of retained austenite into martensite in high-carbon or high-carbon and high-alloyed iron alloys. Cryogenic treatment induces the following alterations in the microstructures: (i) a considerable reduction in the retained austenite amount, (ii) formation of refined martensite coupled with an increased number of lattice def
Influence of Heat Treatment Parameters of Austempered Ductile Iron on the Microstructure, Corrosion and Tribological Properties
Halina Krawiec, Janusz Lelito
The influence of heat treatment parameters such as the annealing time and austempering temperature on the microstructure, tribological properties and corrosion resistance of ductile iron have been investigated. It has been revealed that the scratch depth of cast iron samples increases with the extension of the isothermal annealing time (from 30 to 120 min) and the austempering temperature (from 28
A Review on Heat Treatment of Cast Iron: Phase Evolution and Mechanical Characterization
Ojo Jeremiah Akinribide, Olasupo Daniel Ogundare
The isothermal heat treatment process has been identified as a unique process of fabricating exceptional graphite cast iron due to its remarkable mechanical properties, such as excellent machinability, toughness, and high level of ultimate tensile strength. Austempered ductile iron (ADI), ductile iron (DI), and gray cast iron (GCI), known as spheroidal cast irons, are viable alternative materials
Coherent Precipitation and Strengthening in Compositionally Complex Alloys: A Review
Qing Wang, Zhen Li
High-performance conventional engineering materials (including Al alloys, Mg alloys, Cu alloys, stainless steels, Ni superalloys, etc.) and newly-developed high entropy alloys are all compositionally-complex alloys (CCAs). In these CCA systems, the second-phase particles are generally precipitated in their solid-solution matrix, in which the precipitates are diverse and can result in different str
An Enhanced Method to Evaluate Tensile Yield Stress by Small Punch Tests Using Deflection Curves
Betül Gülçimen Çakan, Peter Hähner
While force–displacement curves are often preferred in Small Punch (SP) tests due to the ease of the experimental set-up, they encompass significant uncertainties arising from frame compliance. In this work, a methodology is presented to predict yield stresses from the force vs. deflection curves. The present method relies on determining different force levels from the initial part of the force–de
Evaluation of a Method for Determining Material Strength Based on Hardness Measurements: A Case Study of the Ti6Al4V Alloy
Karolina Karolewska, Mateusz Wirwicki
The aim of this study was to evaluate the feasibility of estimating the tensile strength of Ti6Al4V alloy, based on HV measurements. The investigation included samples that were manufactured using both additive technology and conventional methods, under various conditions: as-built, heat-treated, and untested mechanically. Static tensile tests and HV measurements were performed to assess the influ
Miniature Tensile and Small Punch Testing: Mechanical Performance and Application in Hydrogen Embrittlement Analysis
Ping Tao, Wei Zhou
The utilization of micro-sample testing has demonstrated its effectiveness in conducting quantitative research on mechanical properties, damage evolutions and fracture features. For in-service equipment, millimicron sampling allows for non-destructive testing and analysis of mechanical performance evolution during operation. This paper presents a comparative study of the miniature uniaxial tensile
Status and Challenges in Homogenization Methods for Lattice Materials
Jacobs Somnic, Bruce W. Jo
Lattice structures have shown great potential in that mechanical properties are customizable without changing the material itself. Lattice materials could be light and highly stiff as well. With this flexibility of designing structures without raw material processing, lattice structures have been widely used in various applications such as smart and functional structures in aerospace and computati
Microwave Rapid Sintering of Al-Metal Matrix Composites: A Review on the Effect of Reinforcements, Microstructure and Mechanical Properties
Penchal Reddy Matli, Rana Abdul Shakoor
Aluminum metal matrix composites (AMMCs) are light-weight materials having wide-spread use in the automobile and aerospace industries due to their attractive physical and mechanical properties. The promising mechanical properties of AMMCs are ascribed to the size and distribution of the reinforcement, as well as to the grain size of the matrix. Microwave rapid sintering involves internal heating o
Comparative Analysis of the Hot Isostatic Pressing Densification Behavior of Uniform and Non-Uniform Distributed Powder
Fandi Meng, Lihui Lang
Hot isostatic pressing (HIP) technology can directly produce nearly clean shaped workpieces that meet the requirements while ensuring machining accuracy and surface quality. Usually, people use numerical simulation methods to reduce experimental costs. Generally, a uniform powder relative density distribution of about 65% is used in the simulation. However, in practical engineering, we found that
Asymmetric (Hot, Warm, Cold, Cryo) Rolling of Light Alloys: A Review
Denis Pustovoytov, Alexander Pesin
Asymmetric sheet rolling is a process used when there are differences in any technological parameters in the horizontal plane across the width of the deformation zone or in the vertical plane between the top and bottom surfaces of the deformation zone. Asymmetry can either have random causes, or it can be created purposefully to reduce rolling force, improve sheet flatness, minimize the ski effect
A Review on Material Extrusion Additive Manufacturing of Metal and How It Compares with Metal Injection Moulding
Chanun Suwanpreecha, Anchalee Manonukul
Material extrusion additive manufacturing of metal (metal MEX), which is one of the 3D printing processes, has gained more interests because of its simplicity and economics. Metal MEX process is similar to the conventional metal injection moulding (MIM) process, consisting of feedstock preparation of metal powder and polymer binders, layer-by-layer 3D printing (metal MEX) or injection (MIM) to cre
Elaboration of Metallic Materials by SPS: Processing, Microstructures, Properties, and Shaping
Jean-Philippe Monchoux, Alain Couret
After a few decades of increasing interest, spark plasma sintering (SPS) has now become a mature powder metallurgy technique, which allows assessing its performances toward fabricating enhanced materials. Here, the case of metals and alloys will be presented. The main advantage of SPS lies in its rapid heating capability enabled by the application of high intensity electric currents to a metallic
Analysis and Design of Lattice Structures for Rapid-Investment Casting
Christopher T. Richard, Tsz-Ho Kwok
This paper aims to design lattice structures for rapid-investment casting (RIC), and the goal of the design methodology is to minimize casting defects that are related to the lattice topology. RIC can take full advantage of the unprecedented design freedom provided by AM. Since design for RIC has multiple objectives, we limit our study to lattice structures that already have good printability, i.e
Effect of Post Weld Heat Treatment on the Microstructure and Mechanical Properties of a Submerged-Arc-Welded 304 Stainless Steel
Tae-Hoon Nam, Eunsol An
The present study is to investigate the effect of post heat treatment on the microstructures and mechanical properties of a submerged-arc-welded 304 stainless steel. The base material consisted of austenite and long strips of delta-ferrite surrounded by Cr-carbide, and the welds consisted of delta ferrite and austenite matrix. For the heat treatment at 850◦C or lower, Cr-carbides were precipitated
Post-Weld Heat Treatment of S690QL1 Steel Welded Joints: Influence on Microstructure, Mechanical Properties and Residual Stress
Damir Tomerlin, Dejan Mari´ c
During the manufacturing of welded structures, residual stresses are often present, and one common approach to mitigate these stresses is through Post-Weld Heat Treatment (PWHT). This study focuses on the PWHT of S690QL1 High Strength Steel (HSS), which, due to its production through a Quenching and Tempering (QT) process, presents challenges for effective heat treatment without compromising its m
Materials 2021, 14, 5804. https://doi.org/10.3390/ma14195804
Jiwen Cheng, Gang Song
The softening phenomenon of age-hardening aluminum alloy-welded joints is severe during conventional fusion welding, which increases the likelihood of stress and strain concentration in the joint during the period of service, significantly reduces the mechanical properties compared to the base metal, and represents an obstacle to the exploration of the potential structural performance. This review
Research on the Microstructure and Properties of a Flux-Cored Wire Gas-Shielded Welded Joint of A710 Low-Alloy High-Strength Steel
Xing Wang, Zhibin Yang
In this study, a 16 mm thick A710 low-alloy high-strength steel was welded by using flux-cored wire gas-shielded welding with an E81T1-Ni1M flux-cored wire. The microstructure characteristics and mechanical properties of the joints were systematically studied. The results showed that the joint was well formed without obvious welding defects. The center of the weld was mainly needle-like ferrite, t
Production and Properties of Electron-Beam-Welded Joints on Ti-TiB Titanium Alloys
Petro Loboda, Constantine Zvorykin
In this article, structural features of Ti-TiB and (α+β) Ti alloys in the initial state, in the weld and in the heat-affected zone of electron beam welds were investigated. The influences of welding parameters, such as influence of the electron beam velocity, preheating of the welded alloys and the subsequent annealing of the welded joint on its microstructure, and the mechanical strength and duct
Synergistically enhanced alkali activated recycled mortar with 2026 Results
Hui Zhou, Huanan Liu
To address the issue of insufficient strength in alkali-activated recycled concrete powder (RCP) mortar at high replacement rates, this study proposes the use of K-carrageenan (K-C) and aluminum silicate fibers (ASF) to construct a polymer-fiber composite reinforcement system. Through mechanical property testing and microscopic characterization methods such as scanning electron microscopy-energy d
High-Pressure Die Casting: A Review of Progress from the EPSRC Future LiME Hub
Ewan Lordan, Yijie Zhang
This article provides an overview of high-pressure die casting (HPDC)-related research undertaken at the EPSRC Future LiME Hub between 2015–2022. The project aimed to identify the cause of variability in the tensile ductility of die-cast structures and to develop novel processing techniques to address this issue. Variability in tensile ductility was related to the size of large pores and non-metal
Effect of Gating System Design on the Quality of Aluminum Alloy Castings
Marek Br ˚ una, Marek Galcik
In this paper, a naturally pressurized gating system has been designed to reduce the turbulence of the melt during casting. The influence of gate dimensions, foam filters, a trident gate, and a vortex element were evaluated. Their effect on melt velocity, flow characteristics, number of oxides, casting properties, and mechanical properties were observed. ProCAST Simulation software v.2023 and a wa
Correlation between Microstructural Alteration, Mechanical Properties and Manufacturability after Cryogenic Treatment: A Review
Abbas Razavykia, Cristiana Delprete
Cryogenic treatment is a supplemental structural and mechanical properties refinement process to conventional heat treatment processes, quenching, and tempering. Cryogenic treatment encourages the improvement of material properties and durability by means of microstructural alteration comprising phase transfer, particle size, and distribution. These effects are almost permanent and irreversible; f
Microsoft Word - metals-2633392
Michele Maria Tedesco, Daniele De Caro
In this review, we compared nine different chemical compositions and several heat treatments applied on quenching and partitioning steels investigated in the literature. All of these parameters were correlated to the reported mechanical properties (e.g., yield, tensile strength, elongation and toughness). Sustainability and a circular economy approach for applications in the automotive sector were
Influence of the rolling method on the microstructure and mechanical properties of a five-layer composite material made of FeMn2Si–FeCr18Ni10 steels
V. E. Veselova, I. S. Kamantsev
We study the effect of asymmetric rolling (AR) on the evolution of the microstructure and mechanical properties of a five-layer composite metal consisting of the layers of FeMn2Si steel and FeCr18Ni10 austenitic steel. The comparison of asymmetric and symmetric rolling is carried out for a stress ratio equal to 1.16. It is shown that asymmetric rolling promotes a more uniform distribution of strai
136665779 Mechanical Metallurgy pdf
George E. Dieter, Jr.
Mechanical metallurgy is a complex area of knowledge focusing on the behavior and response of metals to applied forces, which can vary significantly depending on perspective. This book aims to encompass the broad spectrum of mechanical metallurgy by carefully curating content that addresses various interests within the field, including mechanical properties, testing methodologies, and theoretical
Valorisation et Recyclage des Dechets Pl
Benimam Samir, Debieb Farid
La valorisation des déchets plastiques dans le béton est une pratique importante dans le génie civil, étant donné qu'elle n'est pas soumise à des critères de qualité rigoureux. Cette étude vise à évaluer l'impact de l'incorporation de déchets plastiques dans le béton, tant sur le plan environnemental qu'économique. Trois types de déchets plastiques, introduits sous forme de grains et de fibres, on
Projet Beton dArgile Environnemental B A
Mariette Moevus, Laetitia Fontaine
Le projet de recherche Béton d’Argile Environnemental (BAE) a été initié en décembre 2010, financé par le Ministère de l’Écologie, du Développement Durable et de l’Énergie, et s'inscrit dans le programme C2D2 visant à concevoir des matériaux écologiques. L'objectif principal était de rassembler des chercheurs et des industriels pour développer un nouveau matériau de construction à base d'argile. L
Metalurjik Atik Takviyesinin HDPE ve LDP
Elif ULUTAŞ, Zeynep Hazal YAZĞAN
Son yıllarda, endüstriyel gelişmelerin plansız olarak artışı, endüstriyel kirli liği de beraberinde getirmiştir. Bayer prosesi ile alümina üretimi esnasında ortaya çıkan kırmızı çamur yapı malzemeleri üretimi, demir -çelik üretimi, polimer veya metal matrisli kompozitler ve seramikler gibi farklı uygulama alanlarına sahiptir. Endüstriyel atık olarak bilinen kırmızı çamur bu çalışmada polimerler iç
Investigation Mechanical and Microstruct
Elif UZUN KART, Cemre ÖZGÜL
This study examines the mechanical and microstructural behaviors of polycrystalline Ni-based super-alloy Mar M-247 turbine rotor discs, specifically comparing operated and unoperated samples used in turbojet engines. The primary objective was to analyze the influence of operational conditions on the microstructure, which included identifying the characteristics of primary and secondary carbides fo
High-Performance Copper Alloys Fabricated by Cold Spray Additive Manufacturing
Shengxi Jin
This thesis explores the fabrication of high-performance copper alloys using cold spray additive manufacturing techniques, aiming to enhance material properties and processing efficiency. The objective is to analyze the mechanical and microstructural characteristics of the produced alloys. Methodologically, a series of cold spray experiments were conducted, followed by extensive material character
2026 AlZnMgCu Thick Plate Rolling Microstructure
Guiying Deng, Yaohui Wang
This study investigated how initial ingot thickness (400 mm vs. 520 mm) influences the microstructure and mechanical properties of Al–Zn–Mg–Cu alloys rolled to 80 mm. The combination of smaller initial thickness and lower total reduction (the 400-L route) results in lower dislocation density and a higher fraction of metastable η′ precipitates after T77 treatment. In contrast, the 520-L route, whic
Effect of Base Metal Microstructure on Softening Behavior of the Heat-Affected Zone of X80 GMAW Girth Weld
Xueda Li, Zhangyi She, Xunyun Lv, Zeyang Zhang, Liying Li, Bin Han
Softening in the heat-affected zone (HAZ) of high-strength pipeline welds compromises its service safety but the corresponding softening mechanism is not well-understood. Softening behavior in the HAZ of two X80 pipeline girth welds with different base metal microstructures, i.e., acicular ferrite (AF)-dominated (X80-AF) and granular bainite (GB)-dominated (X80-GB), were investigated through micro
2025 Zhao Machine Learning High Entropy Alloy Design
Y. M. Zhao, J. Y. Zhang
High-entropy alloys (HEAs) have attracted much attention due to their excellent properties and wide range of applications, but their large compositional space and complex property relationships pose challenges to traditional design methods. Machine learning (ML) has become a powerful tool for accelerating the HEA design due to its powerful data processing and prediction capabilities. This review f
2026 Kilic Lost Foam A356 Orbital Shaking 10.1007 s40962 026 01995 3
O¨ znur Kılıc¸, Serhat Acar
The mechanical performance of cast aluminum alloys is closely associated with their solidification microstructure, where a fine and homogeneous dendritic structure plays a critical role in achieving high strength and ductility. In this study, orbital shaking is investigated as a dynamic solidification control technique for refining the microstructure of A356 aluminum alloy produced by the lost foa