Investigates microstructure's impact on electrical conductivity and mechanical properties in Ti-6Al-4V, suggesting significant engineering implications.
Correlations between microstructure, mechanical properties, and electrical conductivity (EC) in additively manufactured Ti-6Al-4 V produced by LPBF and EBM are key factors in engineering design. The different thermal histories inherent to these processes lead to distinct phase compositions and morphologies, ranging from tempered α’-martensitic structures in LPBF to α + β microstructures in both EBM and LPBF samples solution-treated at 1050 °C. These variations directly influence properties: yield strength (YS) decreases from (997 ± 13) MPa to (809 ± 11) MPa, and ultimate tensile strength (UTS) from (1059 ± 15) MPa to (924 ± 9) MPa, while EC increases by 12% from the lowest value of 0.5428 MS/m. A clear linear relationship between hardness and yield strength was also observed, including when both properties were normalized by EC.
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Ghio et al. (2026) studied this question.
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