用光学显微镜和扫描电镜研究了12种市售钢中马氏体的表观形貌.结果发现,因惯习面不同,束状薄片马氏体应分成两类,即{111}型和{225}型.前者形成的碳含量范围约0.4%～0.9%,后者约1.0%～1.4%.分析了两者的显微组织特征和区别以及形成的原因.提出了采用显微组织鉴别马氏体惯习面的金相法,可以对X射线和电子衍射的测量结果作出准确标定.
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