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Journal of Shanghai University >

2020 , Vol. 26 >Issue 1: 85 - 94

DOI: https://doi.org/10.12066/j.issn.1007-2861.2022

Research Articles

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

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  • Institute of Materials, Shanghai University, Shanghai 200072, China

Received date: 2018-03-30

  Online published: 2020-03-22

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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

Cite this article

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, 2020 , 26(1) : 85 -94 . DOI: 10.12066/j.issn.1007-2861.2022

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