黄刚,温德智,焦国华,周春泉,周明伟,陈建新,吴开明

• 1:武汉科技大学湖北省冶金工业过程系统科学重点实验室
• 2:湖南华菱涟源钢铁有限公司

摘要(Abstract)：

利用光学显微镜、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、拉伸试验机和硬度仪分析了薄板坯连铸连轧生产的30CrMo钢的热轧微观组织和力学性能。结果表明,该钢主要由珠光体和铁素体组成,珠光体的表观片层间距在0.5μm以下,铁素体晶粒尺寸在5μm以下。该钢热轧屈服强度为461 MPa,抗拉强度达677 MPa,硬度为96.8 HRB,伸长率达23%。与传统厚板坯连铸工艺生产的30CrMo钢热轧组织比,CSP工艺生产的30CrMo钢的组织更细小,综合性能更优良。

关键词(KeyWords)： 薄板坯连铸连轧;CSP;珠光体;铁素体;高强度钢

Abstract:

Keywords:

基金项目(Foundation): 湖南省重大科技专项“CSP工艺生产高强度钢的研究与示范”资助项目(06GK4021);; 教育部新世纪优秀人才支持计划(NCET-05-0680);; 湖北省自然科学基金计划青年杰出人才项目(2006ABB037);; 湖北省教育厅国际合作项目(200711001)

作者(Author): 黄刚,温德智,焦国华,周春泉,周明伟,陈建新,吴开明

DOI: 10.13289/j.issn.1009-6264.2011.06.021

参考文献(References)：

• [1]田乃媛.薄板坯连铸连轧(第二版)[M].北京:冶金工业出版社,2004.
• [2]殷瑞钰,苏天森.中国薄板坯连铸连轧的发展特点和方向[J].钢铁,2007,42(1):1-7.YIN Rui-yu,SU Tian-sen.Development characteristic and direction of thin slab casting rolling in China[J].Iron and Steel,2007,42(1):1-7.
• [3]Landheer H,Oerman S E,Petrov R H,et al.The role of crystal misorientations during solid-state nucleation of ferrite in austenite[J].Acta Materialia2009,57:1486-1496.
• [4]Rob Gadellaa F,Kreijger P J,Cornelissen M C M,et al.Metallurgical aspects of thin slab casting and rolling of low carbon steels[C]//Dusseldorf:Springer Verlag,1994:382-389.
• [5]田村今南,关根宽,田中智,等.高强度低合金钢的控制轧制与控制冷却[M].王国栋,译.北京:冶金工业出版社,1992.
• [6]Kaspar R.Microstructural aspects and optimization of thin slab direct rolling of steels[J].Steel Research,2003,74(5):318-326.
• [7]康永林,于浩,王克鲁,等.CSP低碳钢薄板组织演变及强化机理研究[J].钢铁,2003,38(8):20-26.KANG Yong-lin,YU Hao,WANG Ke-lu,et al.Study of microstructure evolution and strengthening mechanism of low carbon steel produced by CSPline[J].Iron and Steel,2003,38(8):20-26.
• [8]赵征志.CSP热轧低碳高强度汽车板的强韧化机理及控制[D].北京:北京科技大学,2006,91.
• [9]Thompson M,Ferry M,Manohar P A.Simulation of hot band microstructure of C-Mn steels during high speed cooling[J].ISIJ International,2001,41(8):891-899.
• [10]Sun Z Q,Yang W Y,Qi J J,et al.Deformation enhanced transformation and dynamic recrystallization of ferrite in a low carbon steel during multripasshot deformation[J].Materials Science and Engineering A,2002,334(1～2):201-206.
• [11]Liu D L,Fu J,Kang Y L,et al.Oxide and sulfide dispersive precipitation and effects on microstructure and properties of low carbon steels[J].Journalof Materials Science and Technology,2002,18(1):7-9.
• [12]傅杰,康永林,柳得橹,等.CSP工艺生产低碳钢中的纳米碳化物及其对钢的强化作用[J].北京科技大学学报,2003,25(4):328-331.FU Jie,KANG Yong-lin,LIU De-lu,et al.Nano-scale carbide and strengthening effect in low carbon steel produced by CSP process[J].Journal ofUniversity of Science and Technology Beijing,2003,25(4):328-331.
• [13]康永林,傅杰,柳得橹,等.薄板坯连铸连轧钢的组织性能控制[M].北京:冶金工业出版社,2006.
• [14]于永梅,许云波,李长生,等.薄板坯连铸连轧Fe-3wt%Si钢带析出物的实验研究[J].材料热处理学报,2008,29(3):76-79.YU Yong-mei,XU Yun-bo,LI Chang-sheng,et al.Experimental study on precipitation of Fe-3 wt%Si steel strip produced by thin slab casting androlling[J].Transactions of Materials and Heat Treatment,2008,29(3):76-79.
• [15]傅杰,吴华杰,刘阳春.薄板坯连铸连轧铁素体+珠光体类型钢的强化与软化[J].中国工程科学,2008,10(4):65-72.FU Jie,WU Hua-jie,LIU Yang-chun.Strengthening and softening of ferrite+pearlite steels produced by thin slab casting and rolling[J].ChineseEngineering Sciences,2008,10(4):65-72.

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