Hydrogen Enhances Shape Memory Effect of a Ferrous Face-Centered Cubic Alloy
Hydrogen Enhances Shape Memory Effect of a Ferrous Face-Centered Cubic Alloy
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DOI：
10.1007/s11661-020-05886-y
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发表时间：
2020-06
期刊：
影响因子：
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通讯作者：
M. Koyama;Chunxi Hao;E. Akiyama;K. Tsuzaki
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文献类型：
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作者：
M. Koyama;Chunxi Hao;E. Akiyama;K. Tsuzaki
本文首次报道了无论预应变水平如何，间隙氢都能改善铁基面心立方合金的形状恢复性能。在预应变约为7%时，氢的最大形状恢复应变从2.8提高到3.4%。氢对形状记忆效应的增强源于(1)形变诱导马氏体分数的增加，(2)马氏体板的变薄，(3)马氏体板数量的增加。
This paper marks the first report on the fact that interstitial hydrogen improves the shape recovery property of an Fe-based face-centered cubic alloy, regardless of pre-strain level. The maximum shape recovery strain when using hydrogen was increased from 2.8 to 3.4 pct at an approximately 7 pct pre-strain. The enhancement of the shape memory effect by hydrogen stems from (1) increasing deformation-induced martensite fraction, (2) thinning of martensite plates, and (3) increasing the number of martensite plates.