采用SEM和XRD方法研究了Cr23C6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1073 K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.Cr23 C6颗粒优先在γ/δ相界面、γ/ε相界面、γ晶界处形核,Cr23C6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Cr23 C6更稳定.
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