王立民,彭梦都,刘正东,雷玖芳

• 1:钢铁研究总院特殊钢研究所
• 2:昆明理工大学材料科学与工程学院
• 3:中航工业南方航空工业(集团)有限公司工程技术部

摘要(Abstract)：

采用扫描电子显微镜、透射电子显微镜和冲击性能测试等方法,研究了正火冷却速度和回火温度对45Cr MOV钢的组织和冲击韧性及其断口形貌的影响规律。结果表明,由于组织中有先共析铁素体的存在,以及贝氏体板条较宽,因而45Cr MOV钢正火后的冲击韧性值较低。随正火冷却速度的升高,贝氏体中M-A岛由多边形及近球状逐渐变为片状、细长状及尖角状,但冲击值稍有增加;在600℃以下温度进行回火时,冲击韧性变化不大,当回火温度超过600℃,由于发生了再结晶,冲击韧性明显增加。冲击断口纤维区和剪切唇所占比例随回火温度的升高而逐渐增加,回火温度低于650℃的冲击断口放射区的微观形貌均呈现准解理断裂特征。

关键词(KeyWords)： 冲击韧性;贝氏体;冲击断口

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王立民,彭梦都,刘正东,雷玖芳

DOI: 10.13289/j.issn.1009-6264.2015.02.030

参考文献(References)：

• [1]刘宗昌,王海燕,任慧平.贝氏体铁素体形核机理求索[J].材料热处理学报,2007,28(1):53-57.LIU Zong-chang,WANG Hai-yan,REN Hui-ping.Investigation of bainite ferrite nucleation mechanism[J].Transactions of Materials and Heat Treatment,2007,28(1):53-57.
• [2]刘宗昌,王海燕,任慧平,等.贝氏体铁素体形核长大的热激活迁移机制[J].金属热处理,2007,32(11):1-5.LIU Zong-chang,WANG Hai-yan,REN Hui-ping,et al.Thermal activation transition mechanism of bainitic ferrite nucleation and growth[J].Heat Treatment of Metals,2007,32(11):1-5.
• [3]刘宗昌,计云萍,任慧平.贝氏体相变理论研究新进展[J].内蒙古科技大学学报,2012,31(1):34-43.LIU Zong-chang,JI Yun-ping,REN Hui-pin.Latest advance in theoretical study on bainite phase transformation[J].Journal of Inner Mongolia University of Science and Technology,2012,31(1):34-43.
• [4]董现春,张熹,陈延清,等.Q550D贝氏体高强钢板焊接接头强度匹配的选择[J].机械工程材料,2011,35(5):31-34.DONG Xian-chun,ZHANG Xi,CHEN Yan-qing,et al.Selection of welding joint strength matching of bainite Q550D high strength steel plate[J].Materials for Mechanical Engineering,2011,35(5):31-34.
• [5]饶静,朱远志.Q650低碳贝氏体钢的研制[J].特殊钢,2010,31(4):37-39.RAO Jing,ZHU Zhi-yuan.Development and production of low carbon bainitic steel Q650[J].Special Steel,2010,31(4):37-39.
• [6]夏政海,曹志强.超低碳高强度Q550D贝氏体钢的研制[J].钢铁研究学报,2010,22(6):40-44.CAO Zheng-hai,CAO Zhi-qiang.Development of an ultra low carbon bainite steel Q550D[J].Journal of Iron and Steel Research.2010,22(6):40-44.
• [7]高绪涛,孙蓟泉,赵爱民,等.贝氏体区等温时间对TRIP钢残奥及力学性能影响[J].材料科学与工艺,2011,19(6):123-128.GAO Xu-tao,SUN Ji-quan,ZHAO Ai-min,et al.Effect of austempering isothermal-time at bainite field on retain austenite and mechanical properties in TRIP steel[J].Materials Science and Technology,2011,19(6):123-128.
• [8]米振莉,李志超,范东亮,等.高强度冷轧TRIP钢的工艺改进及组织性能[J].材料热处理学报,2011,32(10):112-116.MI Zhen-li,LI Zhi-chao,FAN Dong-liang,et al.Influence of heat treatment on microstructure and properties of a high strength cold-rolled TRIP steel[J].Transactions of Materials and Heat Treatment,2011,32(10):112-116.
• [9]许云波,侯晓英,王业勤,等.贝氏体区等温处理对钒微合金化TRIP钢组织性能的影响[J].材料热处理学报,2012,33(10):49-54.XU Yun-bo,HOU Xiao-ying,WANG Ye-qin,et al.Effect of heat treatment in bainite region on microstructure and mechanical properties of Vmicroalloyed TRIP-aided sheet steel[J].Transactions of Matericals and Heat Treatment,2012,33(10):49-54.
• [10]高建忠,郭斌,徐进桥,等.轧后冷速对X120管线钢组织和强度的影响[J].材料热处理学报,2011,32(12):43-47.GAO Jian-zhong,GUO Bin,XU Jin-qiao,et al.Effect of cooling rate on microstructure and strength of a X120 pipeline steel after rolling[J].Transactions of Materials and Heat Treatment,2011,32(12):43-47.
• [11]李振华,张骁勇,高惠临,等.终冷温度对大变形管线钢力学性能的影响[J].热加工工艺,2011,40(16):164-166.LI Zhen-hua,ZHANG Xiao-yong,GAO Hui-lin,et al.Effect of quenching temperature on mechanical properties of pipeline steel with excellent deformability[J].Hot Working Technology,2011,40(16):164-166.
• [12]于庆波.M/A岛对粒状贝氏体钢冲击韧性的影响[J].热加工工艺,2012,41(24):41-42YU Qing-bo.Influence of M/A island on impact toughness of granular bainite steel[J].Hot Working Technology,2012,41(27):41-42
• [13]于庆波,段贵生,孙莹,等.粒状贝氏体组织对低碳钢力学性能的影响[J].钢铁,2008,43(7):68-71.YU Qing-bo,DUAN Gui-sheng,SUN Ying,et al.Effect of granular bainite on mechanical properties of low-carbon steel[J].Iron and Steel,2008,43(7):68-71.
• [14]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.CHAI Feng,YANG Chai-fu,ZHANG Yong-quan,et al.Effect of granular bainite on impact toughness of CFGHAZ of ultra-low carbon copper-bearing age-hardening steel[J].Journal of Iron and Steel Research,2005,17(1):42-46.
• [15]王学敏,杨善武,贺信莱,等.超低碳贝氏体钢焊接热影响区冲击韧性的研究[J].钢铁研究学报,2000,12(1):47-52.WANG Xu-min,YANG Shan-wu,HE Xin-lai,et al.Study on impact toughness of HAZ in ultra-low carbon bainitic steel[J].Journal of Iron and Steel Research,2000,12(1):47-52.
• [16]黄军波,何毅,霍洁,等.淬火冷速对转子30Cr Mo Ni V511钢韧性的影响[J].材料研究学报,2013,27(3):331-336.HUANG Jun-bo,HE Yi,HUO Jie,et al.Effect of quenching cooling rate on the toughness of 30Cr Mo Ni V511 steel for steam turbine rotor[J].Chinese Journal of Materials Research,2013,27(3):331-336.

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