终冷温度对高强度工程机械用钢性能的影响
Effect of Finish Cooling Temperature on Properties of High Strength Engineering Machinery Steel
摘 要
通过两阶段控轧＋快速冷却,综合利用细晶强化、相变强化和析出强化等强化机制获得了分别满足GB/T 16270-1996中Q690和Q620要求的高强度工程机械用钢;着重研究了终冷温度对试验钢显微组织和力学性能的影响.结果表明:试验钢力学性能对终冷温度尤为敏感,随终冷温度降低,屈服强度、抗拉强度和屈强比升高,伸长率降低；试验钢低温韧性优良,针状铁素体的形成有利于提高低温韧性,弥散均匀分布的等轴M-A岛对低温韧性危害较小.
工程机械用钢
强化机制
finish cooling temperature
engineering machinery steel
strengthening mechanisms
Abstract
High strength steel which meets the requirement of Q690 and Q620 in GB/T 16270-1996 was obtained through grain refinement strengthening,transformation strengthening and precipitation strengthening by two stage controlled rolling followed by accelerated cooling.It was found that the mechanical properties were especially sensitive to the finish cooling temperature.Yield strength,tensile strength and yield ratio increased while elongation decreased with the decrease of the finish cooling temperature.Good low temperature toughness was obtained for the experimental steel.The formation of acicular ferrite was helpful to the improvement of low temperature impact toughness and uniformly distributed equiaxed M-A islands were less detrimental to low temperature impact toughness.
中图分类号 TG142.1,TG335.5
所属栏目 新材料 新工艺
基金项目
收稿日期 2007/9/15
修改稿日期 2007/11/2
网络出版日期
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备注蓝慧芳(1981-),女,山东烟台人,博士研究生.
引用该论文: LAN Hui-fang,DU Lin-xiu,LIU Yan-chun,LIU Xiang-hua,WANG Guo-dong. Effect of Finish Cooling Temperature on Properties of High Strength Engineering Machinery Steel[J]. Materials for mechancial engineering, 2008, 32(9): 29～33
蓝慧芳,杜林秀,刘彦春,刘相华,王国栋. 终冷温度对高强度工程机械用钢性能的影响[J]. 机械工程材料, 2008, 32(9): 29～33
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参考文献
【1】Jahazi M,Egbali B.The influence of hot rolling parameters on the microstructure and mechanical properties of an ultra-high strength steel[J].Journal of Materials Processing Technology,2000,103:276-279.
【2】Adem Bakkaloglu.Effect of processing parameters on the microstructure and properties of a Nb micro-alloyed steel[J].Materails Letters,2002,56:200-209.
【3】田村今男.高强度低合金钢的控制轧制与控制冷却[M].北京:冶金工业出版社,1992.
【4】尚成嘉,王学敏,杨善武,等.高强度低碳贝氏体钢的工艺与组织细化[J].金属学报,2003,39(10):1019-1024.
【5】王学敏,尚成嘉,杨善武,等.组织细化的控制相变技术机理研究[J].金属学报,2002,38(6):661-666.
【6】Materials algorithms project(MAP),University of Cambridge,http://www.msm.cam.ac.uk/map.
【7】孔君华,郑琳,郭斌,等.钼在高强级管线钢中的作用研究[J].钢铁,2005,40(1):66-68.
【8】Bose-Filho W W,Carvalho M A L,Strangwood M.Effect of alloying elements on the microstructure and inclusion formation in HSLA multipass welds[J].Mat-erails Characterization,2007,58:29-39.
【9】Kim Young Min,Lee Hakchelo,Kim Nack J.Transformation behavior and microstructural characteristics of acicular ferrite in linepipe steels[J].Materials Acience and Angineering A,2007(398):169-175.
【10】Echeverria A,Rodriguez-Ibabe J M.The role of grain size in brittle particle induced fracture of steels[J].Materials Science and Engineering A,2003(346):149-158.
【11】赵运堂,尚成嘉,贺信莱,等.低碳Mo-Cu-Nb-B系微合金钢的中温转变组织类型[J].金属学报,2006,42(1):54-58.
【12】高珊,郑磊.不同微观组织高强度管线钢冲击韧性的研究[J].宝钢技术,2003(6):26-30.
【13】Diaz M,Madariaga I,Rodriguez-Ibabe J M,et al.Improvement of mechanical properties in structural steels by development of acicular ferrite microstructures[J].J Construct Steel Res,1998,46(1/3):413-414.
【14】方鸿生,刘东雨,徐平光,等.贝氏体钢的强韧化途径[J].机械工程材料,2001,25(6):1-5.
【15】柴锋,杨才福,张永权,等.粒状贝氏体对超低碳含铜时效钢粗晶热影响区冲击韧性的影响[J].钢铁研究学报,2005,17(1):42-46.
【16】尹桂全,高甲生,洪永昌,等.低碳Ti-Nb系列钢焊后显微组织和性能[J].焊接学报,2001,22(2):71-74.
【17】赵琳,张旭东,陈武柱.800 MPa级低合金钢焊接热影响区韧性的研究[J],2005,41(4):392-396.
【2】Adem Bakkaloglu.Effect of processing parameters on the microstructure and properties of a Nb micro-alloyed steel[J].Materails Letters,2002,56:200-209.
【3】田村今男.高强度低合金钢的控制轧制与控制冷却[M].北京:冶金工业出版社,1992.
【4】尚成嘉,王学敏,杨善武,等.高强度低碳贝氏体钢的工艺与组织细化[J].金属学报,2003,39(10):1019-1024.
【5】王学敏,尚成嘉,杨善武,等.组织细化的控制相变技术机理研究[J].金属学报,2002,38(6):661-666.
【6】Materials algorithms project(MAP),University of Cambridge,http://www.msm.cam.ac.uk/map.
【7】孔君华,郑琳,郭斌,等.钼在高强级管线钢中的作用研究[J].钢铁,2005,40(1):66-68.
【8】Bose-Filho W W,Carvalho M A L,Strangwood M.Effect of alloying elements on the microstructure and inclusion formation in HSLA multipass welds[J].Mat-erails Characterization,2007,58:29-39.
【9】Kim Young Min,Lee Hakchelo,Kim Nack J.Transformation behavior and microstructural characteristics of acicular ferrite in linepipe steels[J].Materials Acience and Angineering A,2007(398):169-175.
【10】Echeverria A,Rodriguez-Ibabe J M.The role of grain size in brittle particle induced fracture of steels[J].Materials Science and Engineering A,2003(346):149-158.
【11】赵运堂,尚成嘉,贺信莱,等.低碳Mo-Cu-Nb-B系微合金钢的中温转变组织类型[J].金属学报,2006,42(1):54-58.
【12】高珊,郑磊.不同微观组织高强度管线钢冲击韧性的研究[J].宝钢技术,2003(6):26-30.
【13】Diaz M,Madariaga I,Rodriguez-Ibabe J M,et al.Improvement of mechanical properties in structural steels by development of acicular ferrite microstructures[J].J Construct Steel Res,1998,46(1/3):413-414.
【14】方鸿生,刘东雨,徐平光,等.贝氏体钢的强韧化途径[J].机械工程材料,2001,25(6):1-5.
【15】柴锋,杨才福,张永权,等.粒状贝氏体对超低碳含铜时效钢粗晶热影响区冲击韧性的影响[J].钢铁研究学报,2005,17(1):42-46.
【16】尹桂全,高甲生,洪永昌,等.低碳Ti-Nb系列钢焊后显微组织和性能[J].焊接学报,2001,22(2):71-74.
【17】赵琳,张旭东,陈武柱.800 MPa级低合金钢焊接热影响区韧性的研究[J],2005,41(4):392-396.
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