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首页> 外文期刊>Philosophical Magazine Letters >Cooperative strain accommodation over grains in martensitic transformation from Fe-Ni nanocrystalline austenite
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Cooperative strain accommodation over grains in martensitic transformation from Fe-Ni nanocrystalline austenite

机译：Fe-Ni纳米晶体奥氏体马氏体转化中的谷物合作菌株

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摘要

This paper reports an investigation of martensitic transformation behaviour from austenite with various grain sizes ranging from 290 nm to 34 m in an Fe-Ni alloy fabricated by electrodeposition and subsequent heat treatment. We confirmed that martensite morphology changed from lath to thin plate with decreasing the austenite grain size. Crystallographic orientation analysis revealed that the variants of thin plate martensite formed in the austenite with relatively coarse grains achieved self-accommodation of the transformation strain inside one austenite grain. In contrast, the transformation strain accompanying martensitic transformation from the ultrafine-grained or nanocrystalline austenite was not accommodated by the martensite variants formed in one austenite grain but accommodated cooperatively by those formed in the several adjacent austenite grains.
机译：本文报告了通过电沉积和随后的热处理制造的Fe-Ni合金中的各种谷粒尺寸的各种谷粒尺寸的马氏体转化行为的研究。 我们确认马氏体形态从板条变成薄板，随着奥氏体晶粒尺寸而变化。 结晶取向分析显示，在奥氏体中形成的薄板马氏体的变体实现了相对粗糙的晶粒的自我容纳奥氏体晶粒内的转化菌株。 相反，伴随着来自超细晶粒或纳米晶体奥氏体的马氏体转化的转化应变由形成在一个奥氏体晶粒中形成的马氏体变体，但是通过形成在几个相邻的奥氏体晶粒中的那些来适应。

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