中文摘要：

利用OM、SEM和XRD等方法研究固态置氢对TB8钛合金微观组织及相变的影响,并且研究置氢后合金的硬度变化规律。结果表明：随着氢含量的增加,合金中β相逐渐增多,并且氢的加入降低了生成ω相的临界冷却速度;TB8钛合金的显微硬度随氢含量的增加先增加后降低,这是由置氢后生成硬化相ω,氢化物δ,软化相β以及氢的固溶强化共同作用的结果。

英文摘要：

The effect of hydrogenation on microstructure and phase transformation of TB8 alloy was investigated by OM, SEM and XRD, and the variation of hardness after hydrogenation was studied. The result reveals that the amount of β phase increases gradually as the hydrogen content increases and hydrogenation reduces the critical cooling rate of ω phase. The hardness of TB8 alloy first increases and then decreases with increasing of hydrogen, which is attributed to the interaction of hardening phase ω, hydride δ, softening phase β and solid solution strengthening of H.