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3D RECONSTRUCTION OF COARSE DENDRITIC MICROSTRUCTURES DURING THE SOLIDIFICATION OF ALUMINUM ALLOYS

D. Ruvalcaba, D. G. Eskin

2023enmicrostructuresolidificationquenching3D reconstructionaluminum alloys

Abstract

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Defects that develop during solidification of aluminum alloys (e.g. hot tearing) depend, among other things (e.g. casting process), on the morphological evolution of microstructure. Quenching (i.e. “freezing”) of the micros tructure during solidification may be used as a technique for studying the structure development of aluminum alloys, however the metallographic examination of the as-quenched structure shows an overestim ation of the solid fraction as related to the temperature of quenching. In the present study, the 3D microstructure reconstruction of as-quenched samples revealed features that showed a coalescence of the finer solid regions formed upon quenching, which might cause the overestimation of the solid fraction as compared to the lever rule and Scheil approximation. The paper presents observations of the 3D microstructure development during solidification of an Al−7 wt% Cu alloy by using the quenching technique and serial sectioning for stacking and 3D rec onstruction. The identification and removal of structure instabilities may help in reconstructing the microstr ucture that develops during solidification.

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Cite This Work

@article{522d70a2-40ae-456f-b29a-74928e2401f4,
  title={3D RECONSTRUCTION OF COARSE DENDRITIC MICROSTRUCTURES DURING THE SOLIDIFICATION OF ALUMINUM ALLOYS},
  author={D. Ruvalcaba and D. G. Eskin},
  year={2023},
  language={en}
}
TY  - JOUR
TI  - 3D RECONSTRUCTION OF COARSE DENDRITIC MICROSTRUCTURES DURING THE SOLIDIFICATION OF ALUMINUM ALLOYS
AU  - D. Ruvalcaba
AU  - D. G. Eskin
PY  - 2023
LA  - en
ER  -

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