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应用透射电子显微镜(TEM)对Cu-13.5Al-2.5Mn-1.36Zn合金的晶体结构进行了分析,结果表明,该合金的亚结构与常见的18R及2H马氏体中的堆垛层错及孪晶条纹有很大的不同.在这种合金的马氏体变体中,可至少观察到两种面缺陷以相近的密度分布,合金中各变体以多种形式进行协作,不同变体的内部亚结构相差很大,且有些变体在界面处以相当牢固的方式进行连接.以上这些结构特征可能与该合金的高逆相变温度及宽相变滞后有关.

参考文献

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