1500MPa级超高强钢组织性能的研究
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摘要
为改进贝氏体钢的生产工艺,对贝氏体超高强钢进行了控轧+空冷(1#钢)、控轧+快冷(2~#钢)试验,对轧后钢板组织性能进行了检测分析。结果表明,1#钢(空冷)的显微组织主要为板条贝氏体和铁素体;2#钢(快冷)的显微组织主要为板条马氏体;1~#钢和2~#钢的抗拉强度都在1 500MPa以上,并具有良好的塑性、韧性,但1#钢的综合性能优于2#钢。
To improve the production process of bainite super-high strength steel,the tests of controlled rolling+ air cooling(1#sample)and controlled rolling+fast cooling(2#sample)were carried out,and the microstructure and mechanical properties of rolled plates after testing were analyzed.The results show that the microstructure of 1#sample is(air cooling)mainly consists of lath bainite ferrite,and the microstructure of 2#steel(fast cooling)is mainly lath martensite.The tensile strength of tested steels are above 1 500 MPa,and the good plasticity and toughness are obtained.But the comprehensive performance of 1#sample is better than 2#sample.
To improve the production process of bainite super-high strength steel,the tests of controlled rolling+ air cooling(1#sample)and controlled rolling+fast cooling(2#sample)were carried out,and the microstructure and mechanical properties of rolled plates after testing were analyzed.The results show that the microstructure of 1#sample is(air cooling)mainly consists of lath bainite ferrite,and the microstructure of 2#steel(fast cooling)is mainly lath martensite.The tensile strength of tested steels are above 1 500 MPa,and the good plasticity and toughness are obtained.But the comprehensive performance of 1#sample is better than 2#sample.
引文
[1]李国彬,刘昌明.控轧控冷工艺对低碳贝氏体钢组织性能的影响[J].轧钢,2005,22(4):10.
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[3]潘留俊,胡恒法,裴新华.空冷贝氏体系列钢种的开发及应用[J].轧钢,2008,25(6):50.
[4]陈建军,姜茂发,李凯.高强度高韧性贝氏体钢轨研究[J].钢铁,2007,42(2):68.
[5]邢娜,何立波,高真凤,等.国外高性能轨钢最新进展[J].世界钢铁,2011(4):52.
[6]Suzuki H.Weldability of modern structural steels in Japan[J].Transaction ISIJ,1983,23(2):297.
[7]许亚娟,周清跃,陈朝阳,等.回火工艺对1 200MPa级贝氏体钢轨组织性能的影响[J].材料热处理学报,2012,33(S):72.
[8]康沫狂,贾虎生.新型系列准贝氏体钢[J].金属热处理,1995(12):3.
[9]王六定,丁富才,王伯民,等.低合金超高强度钢亚结构超细化对韧性的影响[J].金属学报,2009,45(3):292.
[10]俞德刚,王世道.贝氏体相变理论[M].上海:上海交通大学出版社,1998.
[2]Irvine K J,Pickering F B.Physical metallurgy of low-carbon bainitic steel[J].The Iron and Steel Institute of Japan,International,1975,186(1):54.
[3]潘留俊,胡恒法,裴新华.空冷贝氏体系列钢种的开发及应用[J].轧钢,2008,25(6):50.
[4]陈建军,姜茂发,李凯.高强度高韧性贝氏体钢轨研究[J].钢铁,2007,42(2):68.
[5]邢娜,何立波,高真凤,等.国外高性能轨钢最新进展[J].世界钢铁,2011(4):52.
[6]Suzuki H.Weldability of modern structural steels in Japan[J].Transaction ISIJ,1983,23(2):297.
[7]许亚娟,周清跃,陈朝阳,等.回火工艺对1 200MPa级贝氏体钢轨组织性能的影响[J].材料热处理学报,2012,33(S):72.
[8]康沫狂,贾虎生.新型系列准贝氏体钢[J].金属热处理,1995(12):3.
[9]王六定,丁富才,王伯民,等.低合金超高强度钢亚结构超细化对韧性的影响[J].金属学报,2009,45(3):292.
[10]俞德刚,王世道.贝氏体相变理论[M].上海:上海交通大学出版社,1998.