The anisotropic corrosion behaviour of wire arc additive manufactured Ti-6Al-4V alloy in 3.5% NaCl solution

By Bintao Wu, Zengxi Pan, Siyuan Li, Dominic Cuiuri, Donghong Ding, Huijun Li. Corrosion Science, 2018

220 citations recorded by the source corpus.

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.

Subfields: Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/3d615cf2a71e4d23f5f36fee7e3b047103252e85

Citations in the corpus

• Wire Arc Additive Manufacturing of Stainless Steels: A Review (2020, unknown): “In theory, metals with good weldability could be potentially used for WAAM process and so far researchers have successfully fabricated 3D objects in Ti-based [64–67], Al-based [68,69], steel-based [70,71], and Ni-based [72] alloys.”