通过扫描电镜(SEM)、透射电镜(TEM)及物理化学相分析等实验手段研究了不同奥氏体化温度处理状态下30Cr3SiMnNiW钢的微观组织.针对高温平衡相的稳定性及其合金成分与温度的关系,采用热力学及固溶度积经验公式进行了计算,结果表明,860～950C淬火后,马氏体板条束间弥散分布少量未溶M6C相,富集W、Mo、Fe等元素,950℃时完全溶解；完全奥氏体化处理时,由于VC相的固溶度积较大,并未沉淀析出,完全固溶于基体.
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