ZG30Mn钢的热处理工艺
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摘要
为研究热处理工艺对ZG30Mn钢性能的影响,对比了正火、正火+回火、淬火+回火处理工艺条件下ZG30Mn钢的组织和力学性能。结果表明,ZG30Mn钢经过870℃正火后组织为粒状贝氏体,870℃正火+600℃回火后,组织为铁素体+粒状碳化物,强度降低,塑韧性升高。870℃淬火+600℃回火后,组织为回火索氏体,强塑积最高,具有最优的综合力学性能。
In order to study the influence of different heat treatment processes on ZG30 Mn steel,the microstructure and mechanical properties were compared in the condition of three kinds of heat treatment processes which were normalizing,normalizing with tempering,and quenching with tempering. The results show that the microstructure of ZG30 Mn steel is granular bainite after normalizing at 870 ℃. After normalizing at 870 ℃ and tempering at 600 ℃,the microstructure of ZG30 Mn steel is composed of ferrite and cementite particles,the strength decreases,the ductility and toughness increase. After quenching at 870 ℃ and tempering at 600 ℃,the microstructure of ZG30 Mn steel is tempered sorbite,the product of strength and elongation is the highest,and the comprehensive mechanical properties are the best.
In order to study the influence of different heat treatment processes on ZG30 Mn steel,the microstructure and mechanical properties were compared in the condition of three kinds of heat treatment processes which were normalizing,normalizing with tempering,and quenching with tempering. The results show that the microstructure of ZG30 Mn steel is granular bainite after normalizing at 870 ℃. After normalizing at 870 ℃ and tempering at 600 ℃,the microstructure of ZG30 Mn steel is composed of ferrite and cementite particles,the strength decreases,the ductility and toughness increase. After quenching at 870 ℃ and tempering at 600 ℃,the microstructure of ZG30 Mn steel is tempered sorbite,the product of strength and elongation is the highest,and the comprehensive mechanical properties are the best.
引文
[1]崔忠圻,覃耀春.金属学与热处理[M].北京:机械工业出版社,2011:22-189.
[2]李兵,唐正连,罗元元,等.热处理工艺对低合金高性能铸钢组织和性能的影响[J].材料热处理学报,2017,38(8):88-95.Li Bing, Tang Zhenglian, Luo Yuanyuan, et al. Effect of heat treatment process on microstructure and mechanical property of low alloy high performance cast steel[J]. Transactions of Materials and Heat Treatment,2017,38(8):88-95.
[3]Voigt R C. Analysis of intercritical heat treatment of cast steels[J].Journal of Heat Treating,1989,7(2):95-105.
[4]易敏,王国栋,陈涛,等.回火温度对Si-Mn低碳贝氏体钢塑韧性的影响[J].金属热处理,2012,37(10):8-11.Yi Min, Wang Guodong, Chen Tao, et al. Effect of tempering temperature on ductility and toughness of Si-Mn low carbon bainitic steel[J]. Heat Treatment of Metals,2012,37(10):8-11.
[5]Liu S K,Zhang J. Influence of the Si and Mn concentrations on the kinetics of the bainite transformation in Fe-C-Si-Mn alloy[J].Metallurgical Transactions A,1990,21(6):1517-1525.
[6]吴化,王强,刘云旭,等.热处理工艺对20Mn2SiVB钢的组织及力学性能的影响[J].金属热处理,2004,29(7):43-46.Wu Hua,Wang Qiang,Liu Yunxu,et al. Effect of heat treatment on microstructure and properties of steel 20Mn2SiVB[J]. Heat Treatment of Metals,2004,29(7):43-46.
[7]于庆波,段贵生,孙莹,等.粒状贝氏体组织对低碳钢力学性能的影响[J].钢铁,2008,43(1):68-71.Yu Qingbo,Duan Guisheng,Sun Ying,et al. Effect of granular bainite on mechanical properties of low-carbon steel[J]. Iron and Steel,2008,43(1):68-71.
[8]张永权,张荣久,苏航,等.粒状贝氏体对10MnNiCr微合金钢力学性能的影响[J].钢铁,2003,38(11):45-48.Zhang Yongquan,Zhang Rongjiu,Su Hang,et al. Effect of granular bainite on mechanical properties of microalloyed 10MnNiCr steel[J].Iron&Steel,2003,38(11):45-48.
[9]彭云,郑惠锦.回火温度对低合金高强度贝氏体钢组织和性能的影响[J].材料热处理学报,2017,38(7):114-119.Peng Yun, Zheng Huijin. Effect of tempering temperature on microstructure and mechanical properties of high strength low alloy bainite steel[J]. Transactions of Materials and Heat Treatment,2017,38(7):114-119.
[2]李兵,唐正连,罗元元,等.热处理工艺对低合金高性能铸钢组织和性能的影响[J].材料热处理学报,2017,38(8):88-95.Li Bing, Tang Zhenglian, Luo Yuanyuan, et al. Effect of heat treatment process on microstructure and mechanical property of low alloy high performance cast steel[J]. Transactions of Materials and Heat Treatment,2017,38(8):88-95.
[3]Voigt R C. Analysis of intercritical heat treatment of cast steels[J].Journal of Heat Treating,1989,7(2):95-105.
[4]易敏,王国栋,陈涛,等.回火温度对Si-Mn低碳贝氏体钢塑韧性的影响[J].金属热处理,2012,37(10):8-11.Yi Min, Wang Guodong, Chen Tao, et al. Effect of tempering temperature on ductility and toughness of Si-Mn low carbon bainitic steel[J]. Heat Treatment of Metals,2012,37(10):8-11.
[5]Liu S K,Zhang J. Influence of the Si and Mn concentrations on the kinetics of the bainite transformation in Fe-C-Si-Mn alloy[J].Metallurgical Transactions A,1990,21(6):1517-1525.
[6]吴化,王强,刘云旭,等.热处理工艺对20Mn2SiVB钢的组织及力学性能的影响[J].金属热处理,2004,29(7):43-46.Wu Hua,Wang Qiang,Liu Yunxu,et al. Effect of heat treatment on microstructure and properties of steel 20Mn2SiVB[J]. Heat Treatment of Metals,2004,29(7):43-46.
[7]于庆波,段贵生,孙莹,等.粒状贝氏体组织对低碳钢力学性能的影响[J].钢铁,2008,43(1):68-71.Yu Qingbo,Duan Guisheng,Sun Ying,et al. Effect of granular bainite on mechanical properties of low-carbon steel[J]. Iron and Steel,2008,43(1):68-71.
[8]张永权,张荣久,苏航,等.粒状贝氏体对10MnNiCr微合金钢力学性能的影响[J].钢铁,2003,38(11):45-48.Zhang Yongquan,Zhang Rongjiu,Su Hang,et al. Effect of granular bainite on mechanical properties of microalloyed 10MnNiCr steel[J].Iron&Steel,2003,38(11):45-48.
[9]彭云,郑惠锦.回火温度对低合金高强度贝氏体钢组织和性能的影响[J].材料热处理学报,2017,38(7):114-119.Peng Yun, Zheng Huijin. Effect of tempering temperature on microstructure and mechanical properties of high strength low alloy bainite steel[J]. Transactions of Materials and Heat Treatment,2017,38(7):114-119.