Effects of hydrogenation on ambient deformation behaviors of Ti-45Al alloy

来源期刊：中国有色金属学报(英文版)2009年增刊第2期

论文作者：苏彦庆 刘鑫旺 赵龙 王亮 郭景杰 傅恒志

文章页码：403 - 408

Key words：hydrogen; TiAl alloy; hydride; dislocation; fracture

Abstract: Effects of hydrogenation on ambient deformation behaviors of Ti-45Al alloy were studied. The stress—strain curves demonstrate that the plastic deformation of the hydrogenated alloys becomes more remarkable than that of the unhydrogenated alloy. Meanwhile, the compression strength and maximum strain are reduced. Both the hydride and hydrogen atoms in the interstices affect the compression deformation behaviors. The reason of the hydrogen-induced embrittlement is that the hydride is easy to become the nucleus of the cracks. And the variation of plastic deformation process is attributed to hydrogen-promoted emission, multiplication and motion of dislocation.

基金信息：the National Natural Science Foundation of China