Effects of Ti element on phase stability of <i>σ</i>(FeV)

Xie Yi; Xian Yong; Feng Long

doi:10.7513/j.issn.1004-7638.2021.05.007

Volume 42 Issue 5

Oct. 2021

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Xie Yi, Xian Yong, Feng Long. Effects of Ti element on phase stability of σ(FeV)[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 42-46. doi: 10.7513/j.issn.1004-7638.2021.05.007

Citation:

Xie Yi, Xian Yong, Feng Long. Effects of Ti element on phase stability of σ(FeV)[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 42-46. doi: 10.7513/j.issn.1004-7638.2021.05.007

Xie Yi, Xian Yong, Feng Long. Effects of Ti element on phase stability of σ(FeV)[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 42-46. doi: 10.7513/j.issn.1004-7638.2021.05.007

Citation:

Xie Yi, Xian Yong, Feng Long. Effects of Ti element on phase stability of σ(FeV)[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 42-46. doi: 10.7513/j.issn.1004-7638.2021.05.007

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Effects of Ti element on phase stability of σ(FeV)

doi: 10.7513/j.issn.1004-7638.2021.05.007

Xie Yi^1
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Xian Yong^{2
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Feng Long²

1.
School of Automotive Engineering, Chongqing Three Gorges Vocational College, Wanzhou 404000, Chongqing, China
2.
School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 611730, Sichuan, China

Received Date: 2021-07-05
Publish Date: 2021-10-30

Abstract

Abstract

In order to study the effect of large-size transition-metal element Ti on σ(FeV). FeV alloys with different Ti contents were prepared by arc melting, and phase identification and microhardness testing were conducted. The results show that with the increase of Ti concentration from 5% to 15%, the phase of the alloy gradually changes from complex structure σ(FeV) into simple bcc phase α(FeV). It shows that microhardness increases first and then decreases due to the solid solution strengthening of Ti atoms and subsequent σ → α phase transition. The introduction of Ti reduces the phase stability of σ(FeV), and inhibits the formation of σ(FeV) phase. With the increase of Ti content, Ti decreases the dominating d-d electron covalent bonding in σ phase and promotes the formation of coordination polyhedron with coordination number of 16, which does not meet the geometric requirements for the formation of σ phase.
- FeV,
- σ phase,
- Ti element,
- hardness,
- stability

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References(10)

References

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