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%.
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