Investigation of Crystal Structure, Microstructure, and Hydrogenation Behavior of Heat-Treated Ti52V12Cr36 Alloy

Abstract

The effect of heat treatment on the first hydrogenation of body centred cubic (BCC) Ti52V12Cr36 alloy was investigated. It was found that, after a 1 week heat treatment at 1273 K, BCC phase abundance was greatly reduced by heat treatment. The crystal structure changed from BCC to a complex multiphase pattern of BCC phase, C15-type Laves phase, and α-Ti. The network of the α-Ti phase was broader after heat treatment. The heat treatment eliminated the incubation time of the first hydrogenation and improved the kinetics, but the total hydrogen capacity was reduced by 30%.