对高温时效条件下Fe-12.4Cr-0.13C(wt%)合金中碳化物的析出行为进行了计算与研究.研究中采用Thermo-Calc(R)软件对碳化物的析出行为进行了热力学与动力学计算,而后采用HRTEM结合Image J图像分析软件表征了组织中碳化物的类型及粒径分布.结果表明:Fe-12.4Cr-0.13C合金经780℃长时间时效处理后,组织中析出M23C6型碳化物,当时效时间由10 h增加到100 h后,其平均等效粒径由361 nm增大到495 nm,具有明显的粗化行为.
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