Microstructure Analysis of Ultra Low Carbon Bainite Steel
摘 要
对两阶段控轧控冷的超低碳贝氏体钢显微组织进行了光学显微镜和扫描电镜分析.结果表明:扫描电镜更能显示超低碳贝氏体钢的特点,纵向显微组织细小,奥氏体晶粒沿轧向被轧成扁平状,方向性明显,晶界清晰可见,奥氏体晶粒宽度在6~13 μm之间;而横向显微组织、心部显微组织、表面显微组织以粒状贝氏体为主,没有明显的方向性,组织粗大,分布弥散、均匀;粒状贝氏体和板条贝氏体只有在两个极端的温度下才有明显的差异,而处于中间过渡温度时很难截然分开.
Abstract
Optical microscopy(OM) and scanning electron microscopy(SEM) were used to observe the microstructure of ultra low carbon bainite steel(ULCB) that experienced controlled rolling and controlled cooling.Results show that it is more appropriate for SEM to reveal the characteristics of microstructure of the ULCB.The longitudinal microstructure of ULCB is fine and austenite grain is flat along the rolling direction and austenite grain boundary is very clear,the width of austenite grain is about 6-13 μm.Along the transverse direction,granular bainite is dominant at the center and surface of the sample,grain is coarse,equiaxed and even.There are distinct differences between granular bainite and lath bainite at the two extremity temperature and it is very difficult to distinguish them at the transitional temperature.
中图分类号 TG142.1
所属栏目
基金项目 国家973计划资助项目(2004CB619102)
收稿日期 2006/3/29
修改稿日期 2006/6/23
网络出版日期
作者单位点击查看
备注王建泽(1969-),男,河南禹州人,工程师,博士研究生.
引用该论文: WANG Jian-ze,KANG Yong-lin,YANG Shan-wu. Microstructure Analysis of Ultra Low Carbon Bainite Steel[J]. Materials for mechancial engineering, 2007, 31(3): 12~16
王建泽,康永林,杨善武. 超低碳贝氏体钢的显微组织分析[J]. 机械工程材料, 2007, 31(3): 12~16
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】Akira Sato.Research project of structural materials for the 21st(Ultra Steel0)[C]//Liu Guoquan,Wang Funming,Wang Zubin,et al.HSLA Steels2000.Beijing:Metallurgical Industry Press,2000:20-26.
【2】李鹤林.高强度微合金管线钢显微组织分析与鉴别图谱[M].北京:石油工业出版社,2001.
【3】Yang S W,Wang X M,Shang C J,et al.Relaxation of deformed austenite and refinement of bainite in a Nb-containing microallyed steel[J].Univ Sci & Tech Beijing(English edition),2001,8(3):214-217.
【4】Patel J,Klinkenberg C,Hulka K.铌·科学与技术[M].北京:冶金工业出版社,2003:407-424.
【5】尚成嘉,胡良均,杨善武,等.低碳微合金钢中针状铁素体的形成与控制[J].金属学报,2005,41(5):473-475.
【6】李承基.贝氏体相变理论[M].北京:机械工业出版社,1995.
【7】Chiou C S,Yang J R,Huang C Y.The effect of prior compressive deformation of austenite on toughness property in an ultra-low carbon bainitic steel[J].Mater Chem Phys,2001,69:113-116.
【8】武会宾,尚成嘉,赵运堂,等.回火对低碳贝氏体钢组织稳定性及力学性能的影响[J].钢铁,2005(3):63-65.
【2】李鹤林.高强度微合金管线钢显微组织分析与鉴别图谱[M].北京:石油工业出版社,2001.
【3】Yang S W,Wang X M,Shang C J,et al.Relaxation of deformed austenite and refinement of bainite in a Nb-containing microallyed steel[J].Univ Sci & Tech Beijing(English edition),2001,8(3):214-217.
【4】Patel J,Klinkenberg C,Hulka K.铌·科学与技术[M].北京:冶金工业出版社,2003:407-424.
【5】尚成嘉,胡良均,杨善武,等.低碳微合金钢中针状铁素体的形成与控制[J].金属学报,2005,41(5):473-475.
【6】李承基.贝氏体相变理论[M].北京:机械工业出版社,1995.
【7】Chiou C S,Yang J R,Huang C Y.The effect of prior compressive deformation of austenite on toughness property in an ultra-low carbon bainitic steel[J].Mater Chem Phys,2001,69:113-116.
【8】武会宾,尚成嘉,赵运堂,等.回火对低碳贝氏体钢组织稳定性及力学性能的影响[J].钢铁,2005(3):63-65.
相关信息