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马氏体作为重要的合金相,一直是人们感兴趣的研究课题,利用激光对金属表面进行相变硬化,可以得到特殊的淬火组织。文献[2—4]对铸铁的熔凝区进行了详细的研究。我们在对灰铸
As an important alloy phase, martensite has always been a research topic of interest to people. By using laser to phase-change the metal surface, special quenched structure can be obtained. Ref. [2-4] studied the melting zone of cast iron in detail. We are casting gray