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随着航空发动机性能的不断提高,采用合金结构钢渗碳强化的零件,不能满足抗高温和抗腐蚀性能的需求。1Cr17Ni2钢是广泛使用的马氏体型不锈钢,具有良好的耐腐蚀性能和较高的强度[1]。为了满足零件较高温度下使用,并具有良好耐磨性的要求,提出了1Cr17Ni2钢采用低压渗碳的工艺。不锈钢渗碳不同于普通合金结构钢,其渗碳与淬火温度高,碳化物形态复杂,现有的工艺和组织评定标准都不能直接套用,热
With the continuous improvement of aeroengine performance, carburizing and strengthening parts made of alloy steel can not meet the requirements of high temperature resistance and corrosion resistance. 1Cr17Ni2 steel is widely used martensitic stainless steel, has good corrosion resistance and high strength [1]. In order to meet the requirements of higher temperature parts and wear resistance, 1Cr17Ni2 steel is proposed to adopt low pressure carburizing process. Carburizing stainless steel is different from ordinary alloy steel, the carburizing and quenching temperature is high, the carbide morphology is complex, the existing process and organizational evaluation criteria can not be directly applied, heat