Fe含量对有序态Ni4Mo合金晶体结构及性能的作用

doi:10.12066/j.issn.1007-2861.2022

上海大学学报(自然科学版) ›› 2020, Vol. 26 ›› Issue (1): 85-94.doi: 10.12066/j.issn.1007-2861.2022

Fe含量对有序态Ni₄Mo合金晶体结构及性能的作用

王滕, 陈业新(), 谢亚茜

上海大学材料研究所, 上海 200072

收稿日期:2018-03-30 出版日期:2020-02-29 发布日期:2020-03-22
通讯作者: 陈业新 E-mail:yxchen@shu.edu.cn
基金资助:
国家自然科学基金资助项目(51271102)

Effect of Fe content on the crystal structure and mechanical properties of ordered Ni₄Mo alloy

Teng WANG, Yexin CHEN(), Yaxi XIE

Institute of Materials, Shanghai University, Shanghai 200072, China

Received:2018-03-30 Online:2020-02-29 Published:2020-03-22
Contact: Yexin CHEN E-mail:yxchen@shu.edu.cn

摘要/Abstract

摘要：

研究了Fe含量对有序态Ni₄Mo合金晶体结构及力学性能的作用,结果表明: 当在有序态Ni₄Mo合金中添加的Fe含量小于10%时,合金的晶体结构仍为单相有序D1$_{\rm a}$结构;而当Fe含量为10%时,Ni$_{70}$Mo$_{20}$Fe$_{10}$合金的晶体结构变为单相有序面心立方结构;如果继续增加合金中的Fe含量, 则在合金中析出了密排六方结构的第二相.Fe元素通过改变合金的晶体结构显著提高了有序态Ni₄Mo合金拉伸时的延伸率,有序态Ni$_{70}$Mo$_{20}$Fe$_{10}$合金在真空中的延伸率达到了30.9%, 比有序态Ni₄Mo合金的延伸率提高了12倍.Fe合金化也有效降低了有序态Ni₄Mo合金在氢气环境中的脆性敏感性.

关键词: Ni₄Mo合金, 晶体结构, 延伸率, 氢脆敏感性

Abstract:

The effect of iron content on the crystal structure and mechanical properties of ordered Ni₄Mo alloy has been studied in this paper. The results show that the crystal structure of the alloys is still single-phase with D1$_{\rm a}$ structure when the content of iron is less than 10% in the ordered Ni₄Mo alloy. However, the crystal structure of the ordered Ni$_{70}$Mo$_{20}$Fe$_{10 }$ alloy is single phase with the face-centered cubic structure when the content of iron is 10% in the alloy. When the content of iron is increased continuously, there is a second phase with close-packed hexagonal structure precipitated in alloy. The elongation of the ordered Ni$_{70}$Mo$_{20}$Fe$_{10 }$ alloys reaches 30.9%, which is 12 times of the elongation of the ordered Ni₄Mo alloys when tested in vacuum. Additionally, the hydrogen embrittlement susceptibility of the ordered Ni₄Mo alloy in gaseous hydrogen is also effectively reduced by iron alloying.

Key words: Ni₄Mo alloy, crystal structure, elongation, hydrogen embrittlement susceptibility

中图分类号:

TG135

王滕, 陈业新, 谢亚茜. Fe含量对有序态Ni₄Mo合金晶体结构及性能的作用[J]. 上海大学学报(自然科学版), 2020, 26(1): 85-94.

Teng WANG, Yexin CHEN, Yaxi XIE. Effect of Fe content on the crystal structure and mechanical properties of ordered Ni₄Mo alloy[J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(1): 85-94.

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Fe含量对有序态Ni₄Mo合金晶体结构及性能的作用

Effect of Fe content on the crystal structure and mechanical properties of ordered Ni₄Mo alloy

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