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

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:666

Article

Mulay, R. P.¹  Moore, J. A.¹  Florando, J. N.¹  Barton, N. R.¹  Kumar, M.¹ 

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

关键词: Electron microscopy;    Mechanical characterization;    Orientation relationships;    Titanium alloys;   

DOI  :  10.1016/j.msea.2016.04.012

来源: Elsevier

【 摘 要 】

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. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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