氢在无序态和有序态Ni3Fe合金中的扩散行为

上海大学学报(自然科学版)

氢在无序态和有序态Ni₃Fe合金中的扩散行为

陈业新1，马杰1，石丹丹1，C. T. LIU2

1.上海大学材料研究所，上海 200072； 2.田纳西大学材料科学与工程系，美国 TN 37996-2200

收稿日期:2008-05-19 修回日期:1900-01-01 出版日期:2008-10-23 发布日期:2008-10-23
通讯作者: 陈业新

Diffusion of Hydrogen in Disordered and Ordered Ni₃Fe Alloys

CHEN Ye-xin1,MA Jie1，SHI Dan-dan1，C. T. LIU2

1. Institute of Materials, Shanghai University, Shanghai 200072, China;
2. Department of Materials Science and Engineering, University of Tennessee, TN 37996-2200, USA

Received:2008-05-19 Revised:1900-01-01 Online:2008-10-23 Published:2008-10-23
Contact: CHEN Ye-xin

摘要/Abstract

摘要： 采用电解渗氢的方法研究室温下氢在无序态和有序态Ni₃Fe合金中的扩散行为.研究结果表明，在相同渗氢温度下，渗氢后的Ni₃Fe合金的延伸率随渗氢时间的增加而降低，拉伸断口上的沿晶断裂区(IG)的深度随渗氢时间的增加而增加；在相同渗氢时间下，合金拉伸断口上的沿晶断裂区的深度随渗氢温度的增加而增加.沿晶脆性断裂区的深度与渗氢温度和时间的关系符合菲克扩散方程的解.时间滞后法计算结果表明，氢在无序态Ni₃Fe合金中的表观扩散系数高于在有序态合金中的表观扩散系数.氢在无序态和有序态Ni₃Fe合金中的扩散激活能分别为44.9 kJ/mol和29.5 kJ/mol.

关键词: Ni₃Fe合金
, 氢扩散, 无序态, 有序态

Abstract:

Diffusion of hydrogen for disordered and ordered Ni₃Fe alloys at room temperature has been studied by cathodic charging with hydrogen. At the same temperature of precharging, the elongation decreases and intergranular (IG) depth increases with increasing precharging time respectively for Ni₃Fe precharged hydrogen. At the same time of precharging, the depth of IG increases with increase of precharging temperature. Relationship between IG depth and temperature and time is in accordance with the solution of Fick law. Based on the time-lag method, the apparent diffusion coefficient of hydrogen in disordered Ni₃Fe alloy is larger than that in ordered Ni₃Fe alloy. The activation energy of hydrogen diffusion in disordered and ordered Ni₃Fe alloys is 44.9 kJ/mol and 29.5 kJ/mol respectively.

Key words: disordered, Ni₃Fe alloy
, ordered, hydrogen diffusion

中图分类号:

TG 111.6

陈业新;马杰;石丹丹;C. T. LIU. 氢在无序态和有序态Ni₃Fe合金中的扩散行为[J]. 上海大学学报(自然科学版).

CHEN Ye-xin;MA Jie;SHI Dan-dan;C. T. LIU. Diffusion of Hydrogen in Disordered and Ordered Ni₃Fe Alloys
[J]. Journal of Shanghai University（Natural Science Edition）.

[1]	侯锡贝, 陈业新. 硼含量对(Fe,Ni)₃V 合金组织和力学性能的作用[J]. 上海大学学报(自然科学版), 2015, 21(5): 648-656.
[2]	陈业新. 金属间化合物的环境氢脆[J]. 上海大学学报(自然科学版), 2011, 17(4): 487-502.
[3]	陈涛,钱海燕,陈业新. Fe对氢在无序态和有序态Ni₃Fe合金中扩散的影响[J]. 上海大学学报(自然科学版), 2010, 16(2): 183-188.

氢在无序态和有序态Ni₃Fe合金中的扩散行为

Diffusion of Hydrogen in Disordered and Ordered Ni₃Fe Alloys

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