采用X射线衍射法对Fe-17Mn-5Si-10Cr-5Ni和Fe-17Mn-5Si-2Cr-2Ni-1V合金的应力诱发马氏体相变进行了定量的分析.研究结果表明,Fe-17Mn-5Si-10Cr-4Ni合金试样在室温下拉伸,当变形量约为6%时,应力诱发ε马氏体的体积分数达最大值约64%;在预变形量超过5%时,α'马氏体即开始出现且增加迅速;揭示在大变形下,Fe-Mn-Si合金中发生了应力诱发γ→ε→α'马氏体相变.Fe-17Mn-5Si-2Cr-2Ni-lv合金试样在室温拉伸时应力诱发ε马氏体量较Fe-17Mn-5Si-10Cr-4Ni合金更多,即使在预变形量超过10%时,也不出现α'马氏体.预变形温度降低,可促进应力诱发马氏体相变.
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