Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7893541 | Corrosion Science | 2018 | 8 Pages |
Abstract
This study investigates the relationships between corrosion resistances, microstructure and phase composition of Ti-6Al-4V components that have been fabricated with the gas tungsten wire arc additive manufacturing (GT-WAAM) process, through the use of electrochemical corrosion testing, optical microscopy, X-ray diffraction and hardness testing. The corrosion behaviour is anisotropic due to corresponding anisotropy in microstructure, phase structure, grain size and orientation within the WAAM-processed Ti-6Al-4V alloy. Compared to ASTM standard wrought Ti-6Al-4V, the WAAM-processed alloy has a slightly inferior corrosion resistance owing to the formation of asymmetrical structures with lamellar α and acicular α' phases, that display preferred orientation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Bintao Wu, Zengxi Pan, Siyuan Li, Dominic Cuiuri, Donghong Ding, Huijun Li,