杨世洲,李宁,李辉

• 1:四川大学制造科学与工程学院
• 2:四川建筑职业技术学院博士后创新实践基地

摘要(Abstract)：

采用SEM和XRD方法研究了Cr_(23)C_6和NbC颗粒析出模式对FeMnSiCrNiC合金组织及形状记忆效应的影响。结果表明:FeMnSiCrNiC合金经10%拉伸变形后在1073K温度时效能在较短时间内极大地提高合金的形状记忆效应。Cr_(23)C_6颗粒优先在γ/δ相界面、γ/ε相界面、γ晶界处形核,Cr_(23)C_6颗粒的形核受界面形核机制控制;NbC颗粒优先在γ相晶内的位错、层错等缺陷处形核,NbC颗粒的形核受位错或层错形核机制控制。NbC在热力学方面比Cr_(23)C_6更稳定。

关键词(KeyWords)： 形状记忆合金;析出模式;Cr23C6;NbC;形状回复率

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50501015);; 德阳市重点科学技术研究项目(2014ZZ053)

作者(Author): 杨世洲,李宁,李辉

DOI: 10.13289/j.issn.1009-6264.2016.03.016

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