上海大学学报（英文版）
上海大學學報（英文版）
상해대학학보（영문판）
JOURNAL OF SHANGHAI UNIVERSITY (ENGLISH EDITION)
2007年
2期
102-105
,共4页
石丹丹%陈业新%万晓景%LIU Chain Tsuan
石丹丹%陳業新%萬曉景%LIU Chain Tsuan
석단단%진업신%만효경%LIU Chain Tsuan
hydrogen embrittlement%Ni3Fe alloy%boron addition
In this paper the tensile properties of both ordered and disordered Ni-24Fe and Ni-24Fe-0.03%B (wt%) alloys in gaseous hydrogen was investigated. The result shows that the ductility of the disordered Ni3Fe is significantly larger than that of ordered material in gaseous hydrogen. However, the ductility of ordered Ni3Fe doped with 0.03%B is nearly the same as that of disordered one indicating the obvious suppressing effect of boron on the H2-induced embrittlement. Based on the segregation behavior of boron in Ni3Al, it is proposed that the suppressing effect of boron in Ni3Fe on the H2-induced embrittlement is attributed to the segregation of boron on grain boundaries, thereby reducing the hydrogen diffusivity along the grain boundaries.
