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

Mulay, R. P.; Moore, J. A.; Florando, J. N.; Barton, N. R.; Kumar, M.

doi:10.1016/j.msea.2016.04.012

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

Journal Article · Thu Apr 07 04:00:00 EDT 2016 · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

DOI:https://doi.org/10.1016/j.msea.2016.04.012· OSTI ID:1476861

Mulay, R. P. ^[1]; Moore, J. A. ^[1]; Florando, J. N. ^[1]; Barton, N. R. ^[1]; Kumar, M. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

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. In conclusion, these results are discussed in light of the microstructure, texture, and polycrystal plasticity modeling.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1476861

Alternate ID(s):: OSTI ID: 1360850

Report Number(s):: LLNL-JRNL--680322; 804396

Journal Information:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Journal Name: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing Journal Issue: C Vol. 666; ISSN 0921-5093

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Electron microscopy
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Titanium alloys

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