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利用透射电镜观察了Fe 1 8Mn 5Si 1 0Cr 4Ni记忆合金中诱发ε马氏体在逆相变过程中的微观组织变化 ,对ε→γ逆相变进行了研究 在应力诱发γ→ε马氏体相变过程中 ,形成了两种不同形态的ε马氏体 ,它们的逆相变表现不同的特征 对于单片状ε马氏体 ,逆相变的进行较容易 ,且易实现晶体学完全可逆 ;对于由多层组成的宽ε马氏体带 ,逆相变较困难 ,不易获得晶体学完全可逆
The microstructure of ε martensite in Fe 1 8Mn 5Si 1 0Cr 4Ni memory alloy during reverse transformation was observed by transmission electron microscopy. The reverse transformation of ε → γ was studied in the stress-induced γ → ε martensite In the process of phase transformation, two different forms of ε-martensite are formed, and their reverse phase transformation shows different characteristics for monolithic ε-martensite, reverse phase transformation is easier, and it is easy to achieve complete reversibility of crystallography ; For the wide ε martensite band composed of multiple layers, the reverse phase transformation is more difficult, it is not easy to obtain the crystal completely reversible