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- Title
Correlation Between Heat-Treated Microstructure and Mechanical and Fretting Wear Behavior of Electron Beam Freeform-Fabricated Ti6Al4V Alloy.
- Authors
Tao, Xuewei; Li, Zhong; Yao, Zhengjun; Zhang, Shasha; Xu, Yi
- Abstract
Heat treatments have been conducted on electron beam freeform-fabricated (EBF3-ed) Ti6Al4V alloy to obtain desired compressive and antifretting wear performance. The results suggested that the compression and fretting wear properties were significantly affected by the heat-treated microstructure. The subtransus heat treatment used in the present work created a homogeneous and coarser α + β lamellar structure with numerous fine secondary α and nanoscale dispersoids inside. Such structural evolution accounts for the superior compressive property, high hardness, and fretting wear resistance. Additional findings revealed that the fine secondary α and nanoscale dispersoids made a great contribution to the mechanical strengthening and especially passivation of crack propagation. This study shows that the as-received microstructure after EBF3 can be tailored by heat treatment to achieve favorable performance, which is significant for application of Ti6Al4V deposits.
- Subjects
FRETTING corrosion; MECHANICAL wear; MICROSTRUCTURE; HEAT treatment; WEAR resistance; ELECTRON beams
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2019, Vol 71, Issue 7, p2313
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-019-03469-w