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

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.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-680322
Journal ID: ISSN 0921-5093; 804396
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Additional Journal Information:
Journal Volume: 666; Journal Issue: C; Journal ID: ISSN 0921-5093
Publisher:
Elsevier
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Electron microscopy; Mechanical characterization; Orientation relationships; Titanium alloys
OSTI Identifier:
1476861
Alternate Identifier(s):
OSTI ID: 1360850

Mulay, R. P., Moore, J. A., Florando, J. N., Barton, N. R., and Kumar, M.. Microstructure and mechanical properties of Ti–6Al–4V: Mill-annealed versus direct metal laser melted alloys. United States: N. p., Web. doi:10.1016/j.msea.2016.04.012.
Mulay, R. P., Moore, J. A., Florando, J. N., Barton, N. R., & Kumar, M.. Microstructure and mechanical properties of Ti–6Al–4V: Mill-annealed versus direct metal laser melted alloys. United States. doi:10.1016/j.msea.2016.04.012.
Mulay, R. P., Moore, J. A., Florando, J. N., Barton, N. R., and Kumar, M.. 2016. "Microstructure and mechanical properties of Ti–6Al–4V: Mill-annealed versus direct metal laser melted alloys". United States. doi:10.1016/j.msea.2016.04.012. https://www.osti.gov/servlets/purl/1476861.
@article{osti_1476861,
title = {Microstructure and mechanical properties of Ti–6Al–4V: Mill-annealed versus direct metal laser melted alloys},
author = {Mulay, R. P. and Moore, J. A. and Florando, J. N. and Barton, N. R. and Kumar, M.},
abstractNote = {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.},
doi = {10.1016/j.msea.2016.04.012},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = C,
volume = 666,
place = {United States},
year = {2016},
month = {4}
}