2026 Pede Plastic Deformation Beta Titanium Alloys

b-Titanium alloys have gained significant attention in recent years due to their exceptional corrosion resistance, biocompatibility, and low Young's moduli, making them suitable for biomedical applications. This study investigates the mechanical properties of novel metastable b Ti–42Nb and near b Ti–20Nb–6Ta alloys produced through laser powder bed fusion. The objective was to correlate mechanical properties with microstructural characteristics using the d-electron alloy design method to predict Young's modulus and plastic deformation behavior. The research employed techniques such as X-ray diffraction, scanning electron microscopy, and electron backscatter diffraction for comprehensive material analysis. Results demonstrated that Ti–42Nb and Ti–20Nb–6Ta alloys exhibited superior ductility and lower Young's modulus compared to pure titanium and Ti–6Al–4V processed by the same technique. Interestingly, the orthorhombic a¢¢ phase of Ti–20Nb–6Ta displayed a lower Young's modulus than the b phase of Ti–42Nb while maintaining higher strength. Microstructure analysis revealed no significant stress-induced phase transformations or twin formation for both alloys post-tensile testing. These outcomes affirm the predictions made using the d-electron alloy design method, highlighting the potential of these alloys in biomedical applications.