Abstract
Structural changes and the hydrogen content in pseudobinary Ti3Al–Zr3Al, i.e., Ti1−x−yAlyZrx alloys (y=0.25, 0.30 and 0.35) by hydrogenation were examined with a powder X-ray diffractometer (XRD) and a hydrogen analyzer. Single-phases with the D019 and the B2 structures were formed in the homogenized alloys, while an fcc phase coexisted with the B2 phase. These D019, B2 and fcc phases changed into an amorphous phase by hydrogenation below 573 K. This is the first report of hydrogen-induced amorphization (HIA) by hydrogenation of a single-phase bcc type (B2) alloy. Furthermore, crystallization behavior of the hydrogen-induced amorphous Ti–Al–Zr alloys was investigated by a differential scanning calorimeter (DSC) and XRD.
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