Microstructure and mechanical properties of Ti-6Al-4V: Mill-annealed versus direct metal laser melted alloys

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Abstract

Additive manufacturing processes such as direct metal laser melting (DMLM) are known to produce highly anisotropic microstructures. The present work compares the microstructure and mechanical properties of DMLM Ti-6Al-4V with that of mill-annealed alloys. Results show that the yield and hardening response of DMLM Ti-6Al-4V does not depend on the testing direction relative to the build direction, while the response of mill-annealed Ti-6Al-4V strongly depends on the testing direction. These results are discussed in light of the microstructure, texture, and polycrystal plasticity modeling.

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Mulay, R. P., Moore, J. A., Florando, J. N., Barton, N. R., & Kumar, M. (2016). Microstructure and mechanical properties of Ti-6Al-4V: Mill-annealed versus direct metal laser melted alloys. Materials Science and Engineering A, 666, 43–47. https://doi.org/10.1016/j.msea.2016.04.012

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