深冷处理对37CrMnMo钢钻杆接头组织和力学性能的影响
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摘要
将锻造后经过调质处理的37CrMnMo钢钻杆接头取样并进行深冷工艺处理,用金相显微镜、扫描电镜观察其组织,并进行力学性能分析。结果表明:深冷处理使得热处理后的材料内部残留奥氏体的含量减少,同时生成马氏体组织,并伴有呈弥散分布的细小碳化物析出;深冷保温时间为12 h时,扭转强度为1011.7 MPa,与未经深冷处理的试样相比,提高了7%;深冷保温时间12 h,深冷次数为3次时,抗拉强度为1286.5 MPa,冲击吸收能量为177.1 J,与未经深冷处理的试样相比,分别提高了9%、10%。
The forged 37CrMnMo steel drill pipe joints that had been quenched and tempered were treated with cryogenic processes.Optical microscope and scanning electron microscope were used to observe the microstructures under different cryogenic process and the mechanical properties of the joints were analyzed.The results show that the cryogenic treatment reduces the content of retained austenite in the heat treated material,and produces martensite structure with finely dispersed carbides; when the holding time is 12 h,the torsional strength is 1011.7 MPa,which is comparable to that of samples without cryogenic treatment.The ratio is increased by 7%; when the cryogenic holding time is 12 h,and for 3 times,the tensile strength is 1286.5 MPa,and the impact absorbed energy is 177.1 J,which is increased by 9%,10% compared with the sample without cryogenic treatment respectively.
The forged 37CrMnMo steel drill pipe joints that had been quenched and tempered were treated with cryogenic processes.Optical microscope and scanning electron microscope were used to observe the microstructures under different cryogenic process and the mechanical properties of the joints were analyzed.The results show that the cryogenic treatment reduces the content of retained austenite in the heat treated material,and produces martensite structure with finely dispersed carbides; when the holding time is 12 h,the torsional strength is 1011.7 MPa,which is comparable to that of samples without cryogenic treatment.The ratio is increased by 7%; when the cryogenic holding time is 12 h,and for 3 times,the tensile strength is 1286.5 MPa,and the impact absorbed energy is 177.1 J,which is increased by 9%,10% compared with the sample without cryogenic treatment respectively.
引文
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[2]顾开选,张红,王俊杰,等.深冷处理对40CrNiMoA合金结构钢组织和性能的影响[J].热加工工艺,2012,41(18):191-195.Gu Kaixuan,Zhang Hong,Wang Junjie.et al.Effect of cryogenic treatment on microstructure and properties of 40CrNiMoA steel[J].Hot Working Technology,2012,41(18):191-195.
[3]谢尘,吴晓春,闵娜,等.3DAP研究高碳高合金钢深冷处理过程的C偏聚行为[J].金属学报,2015,51(3):325-332.Xie Chen,Wu Xiaochun,Min Na.et al.Carbon segregation behavior of highcarbon high-alloy steel during deep cryogenic treatment using3DAP[J].Acta Metallurgica Sinica,2015,51(3):325-332.
[4]Ahmad Zare,Hosseini S R.Influence of soaking time in deep cryogenic treatment on the microstructure and mechanical properties of low-alloy medium-carbon HY-TUF steel[J].International Journal of Minerals Metallurgy and Materials,2016,23(6):658-666.
[5]倪红军,顾涛,吕毅,等.深冷处理对6061铝合金组织与性能的影响[J].热加工工艺,2018,47(6):239-241.Ni Hongjun,Gu Tao,LüYi,et al.Effects of cryogenic treatment on microstructure and property of 6061 aluminum alloy[J].Hot Working Technology,2018,47(6):239-241.
[6]吴志伟,杨卯生,梁剑雄,等.钢铁材料的冷处理[J].金属热处理,2017,42(10):116-124.Wu Zhiwei,Yang Maosheng,Liang Jianxiong,et al.Cryogenic treatment of steel materials[J].Heat Treatment of Metals,2017,42(10):116-124.
[7]刘坤锋,晏彬彬,徐新成,等.深冷处理对37CrMnMo钢组织及力学性能的影响[J].热加工工艺,2018,47(8):233-236.Liu Kunfeng,Yan Binbin,Xu Xincheng,et al.Effects of deep cryogenic treatment on microstructure and mechanical properties of37CrMnMo steel[J].Hot Working Technology,2018,47(8):233-236.
[8]艾峥嵘,吴红艳,高海涛,等.高速钢深冷处理作用机理研究现状[J].金属热处理,2014,39(3):94-98.Ai Zhengrong,Wu Hongyan,Gao Haitao,et al.Research status on cryogenic treatment mechanism of high speed steel[J].Heat Treatment of Metals,2014,39(3):94-98.
[9]李亚微,成卓,蒋显全,等.深冷处理对20CrMnMo钢组织和性能的影响[J].热加工工艺,2017,46(10):216-219.Li Yawei,Cheng Zhuo,Jiang Xianquan,et al.Effect of cryogenic treatment on microstructure and properties of 20CrMnMo steel[J].Hot Working Technology,2017,46(10):216-219.
[10]吴红艳,艾峥嵘,刘相华.钢铁材料深冷处理技术研究和应用进展[J].材料热处理学报,2013,34(12):1-8.Wu Hongyan,Ai Zhengrong,Liu Xianghua.Progress of research and application on cryogenic treatment of steels[J].Transactions of Materials and Heat Treatment,2013,34(12):1-8.
[11]康超,郭秀乔,唐雪明,等.冷处理温度对440C不锈钢组织和硬度的影响[J].热加工工艺,2017,46(24):212-216.Kang Chao,Guo Xiuqiao,Tang Xueming,et al.Effects of cold treatment temperature on microstructure and hardness of 440C stainless steel[J].Hot Working Technology,2017,46(24):212-216.
[12]孙静.超低温处理工艺对YGl2和M2Al材料力学性能和微观组织的影响[D].沈阳:东北大学,2014.