齐亮,胡义锋,张迎晖,刘同华

• 1:江西理工大学材料科学与工程学院

摘要(Abstract)：

采用Gleeble-3500热模拟试验机进行了X100管线钢两阶段控制轧制及轧后控冷工艺模拟,研究冷速、精轧变形量及等温温度对亚稳态奥氏体相变规律影响。结果表明:实验钢在试验冷速范围内组织由块状铁素体、粒状贝氏体和板条贝氏体构成;随着冷速增加,奥氏体转变百分率曲线左移,最快相变温度下降,转变速率增加;随着精轧变形量增大,A r3显著提高,奥氏体转变百分率曲线右移,转变速率变化较小。X100管线钢等温温度在400~450℃范围内组织以粒状贝氏体为主,降低至350℃时组织以板条贝氏体为主。

关键词(KeyWords)： 管线钢;亚稳奥氏体;粒状贝氏体;马奥岛;动力学

Abstract:

Keywords:

基金项目(Foundation): 国家“十一五”科技支撑计划(2006BAE03A06);; 江西省教育厅项目(gjj1145)

作者(Author): 齐亮,胡义锋,张迎晖,刘同华

DOI: 10.13289/j.issn.1009-6264.2013.11.018

参考文献(References)：

• [1]张小立,庄传晶,吉玲康,等.高钢级管线钢的组织特征及强韧性[J].特殊钢,2006,27(6):27-29.ZHZANG Xiao-li,ZHUANG Chuan-jing,JI Ling-kang,et al.Structure feature and strength toughness of high grade pipeline steels[J].Spec Steel,2006,27(6):27-29.
• [2]刘守显,罗海文,王瑞珍,等.X100管线钢的连续冷却相变及组织研究[J].钢铁研究,2008,36(1):30-33.LIU Shou-xian,LUO Hai-wen,WANG Rui-zhen,et al.Investigation on the phase transition and microstructure of X100 linepipe steel after continuous cooling[J].Research on Iron and Steel,2008,36(1):30-33.
• [3]杨景红,刘清友,孙冬柏,等.轧制工艺对微合金管线钢组织及M/A岛的影响[J].北京科技大学学报,2009,31(2):180-185.YANG Jing-hong,LIU Qing-you,SUN Dong-bai,et al.Effect of rolling processing on the microstructure and M/A islands in a X70 grade pipeline steel[J].Journal of University of Science and Technology Beijing,2009,31(2):180-185.
• [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.SHANG Cheng-jia,WANG Xue-min,YANG Shan-wu,et al.Microstructure refinement of high strength low carbon bainitic steel[J].Acta Metall Sin,2003,39(10):1019-1024.
• [5]衣海龙,杜林秀,王国栋,等.奥氏体变形对铌微合金钢贝氏体相变的影响[J].材料科学与工艺,2008,16(3):442-444.YI Hai-long,DU Lin-xiu,WANG Guo-dong,et al.Effects of deformation of austenite on bainite transformation in niobium microalloyed low carbon steel[J].Material Science and Technology,2008,16(3):442-444.
• [6]Wang S C,Yang J R.Effects of chemical composition,rolling and cooling conditions on the amount of martensite/austenite constituent formation in low carbon bainitic steels[J].Materials Science and Engineering A,1992,154:43-49.
• [7]Zhao Y T,Shang C J,Yang S W,et al.The metastable austenite transformation in Mo-Nb-Cu-B low carbon steel[J].Materials Science and Engineering A,2006,433:169-174.
• [8]Tsuzak I K,Maki T.Some aspects of bainite transformation in Fe-based alloys[J].Journal De Physique IV,1995,5(8)8-61.
• [9]Zhong Y,Xiao F,Zhang J.In situ TEM study of the effect of M/A films at grain boundaries on crack propagation in an ultrafine acicular ferrite pipeline steel[J].Acta Materialia,2006,54(2):435-443.
• [10]Wang C M,Wu X F,Liu J,et al.Transmission electron microscopy of martensite/austenite islands in pipeline steel X70[J].Materials Science and Engineering A,2006,438:267-271.
• [11]Matteis P,Campagnoli E,Firrao D,et al.Thermal diffusivity measurements of metastable austenite during continuous cooling[J].International Journal of Thermal Sciences,2008,47(6)695-708.
• [12]Freiwillig R,Kudrman J,Chráska P.Bainite transformation in deformed austenite[J].Metallurgical Transactions A,1976,7(8):1091-1097.

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