M2钢快速氮化复合工艺的研究  

Study on Rapid Nitriding Composite Process of M2 Steel

作　　者：葛志宏[1] 邓静[1] GE Zhihong;DENG Jing(Department of Electrical Engineering,Chongqing Aerospace Polytechnic,Chongqing 400021,China)

机构地区：[1]重庆航天职业技术学院机电工程系,重庆400021

出　　处：《铸造技术》2018年第12期2866-2868,共3页Foundry Technology

基　　金：重庆市高校优秀人才支持计划(渝教人发[2017]29号)资助项目

摘　　要：采用超声喷丸+循环氮化时效+二次氧化复合处理工艺对M2钢进行处理,研究了表面的性能。结果表明,在相同渗氮时间下,复合处理工艺的渗氮层比单一循环氮化时效工艺的深30μm,比传统QPQ渗氮层深约100μm,表明其有更快的渗氮速度;复合处理后,M2钢的耐腐蚀性能好,其表面的腐蚀速度约为单一循环氮化时效处理试样的2/3左右,约为未处理试样的2/5。M2 steel was treated by ultrasonic shot peening, cyclic nitrided-aging process and secondary oxidation, and the properties of the treated surface were studied. The results show that the nitriding layer of the composite treatment process is 30 μm deeper than that of the single cycle nitriding-aging process and 100 μm deeper than that of the traditional QPQ under the same nitriding time, it indicates that the composite treatment process has a faster nitriding speed. The corrosion resistance of M2 after composite treatment is better than the single cyclic nitriding-aging treatment, the corrosion rate of the composite treatment sample is about 2/3 of that of the single cyclic nitriding-aging treatment sample and about 2/5 of that of the untreated sample under the given conditions.

关 键 词：超声喷丸 循环氮化时效工艺 二次氧化 QPQ 耐蚀性 

分 类 号：TG156[金属学及工艺—热处理]