许映,刘涛,龙威,周小平

• 1:湖北工业大学材料与化学工程学院
• 2:南车长江铜陵车辆有限公司技术部

摘要(Abstract)：

用金相显微镜、扫描电镜、电子探针及硬度测量等研究了B+钢正火后产生异常组织的原因。结果表明:B+钢正火后的异常组织为粒状贝氏体,造成粒状贝氏体形成的原因主要是由于炼钢过程中微量Mo元素的掺入以及正火后钢中Mn元素的偏析;采用正火后施加一次高温回火处理可以改善粒状贝氏体组织;炼钢时控制Mo元素的掺入,可以预防粒状贝氏体的形成。

关键词(KeyWords)： B+级钢;正火;粒状贝氏体;回火

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 许映,刘涛,龙威,周小平

DOI: 10.13289/j.issn.1009-6264.2019-0087

参考文献(References)：

• [1] 孙晶,陈美玲,杨军,等.货车转向架用B+钢壁厚对力学性能影响的研究[J].热加工工艺,2009,38(23):42-44.SUN Jing,CHEN Mei-ling,YANG Jun,et al.Effects of B+ steel wall thickness on mechanical properties[J].Hot Working Technology,2009,38(23):42-44.
• [2] 王宽.高强韧性转向架用钢成分优化及CCT曲线研究[D].哈尔滨:哈尔滨理工大学,2015.WANG Kuan.Research the optimied composition of bogie with high strength and toughness and the reseach for dynamic CCT diagram[D].Harbin:Harbin University of Science and Technology,2015.
• [3] 程里,林江.ZG25CrMnNi焊补热影响区混晶魏氏组织的形成及改善[J].热加工工艺,2013,42(19):205-208.CHENG Li,LIN Jiang.Formation and improvement on widmanstatten structure in welding heat affected zone of ZG25CrMnNi steel[J].Hot Working Technology,2013,42(19):205-208.
• [4] 李茂华,郭二军,冯义成,等.Mo含量对B+钢组织和性能的影响[J].铸造技术,2017,38(3):530-532.LI Mao-hua,GUO Er-jun,FENG Yi-cheng,et al.Effect of Mo content on microstructure and properties of B+ steel[J].Foundry Technology,2017,38(3):530-532.
• [5] 刘德义,孙立赢,陈汝淑,等.二次正火温度对B+级钢低温韧性的影响[J].热加工工艺,2011,40(4):154-156.LIU De-yi,SUN Li-ying,CHEN Ru-shu,et al.Effect of second normalizing temperatures on low-temperaturetoughness of B+ grade cast steel[J].Hot Working Technology,2011,40(4):154-156.
• [6] 李茂华.转向架用钢成分及热处理工艺优化[D].哈尔滨:哈尔滨理工大学,2017.LI Mao-hua.The optimization of composition and heat treatment process of bogie steel[D].Harbin:Harbin University of Science and Technology,2017.
• [7] 孙立赢.提高铁路货车转向架铸钢ZG25MnCrNi强韧性研究[D].大连:大连交通大学,2010.SUN li-ying.Study on enhancing strength and toughness of ZG25MnCrNi of van biogie[D].Dalian:Dalian Jiaotong University,2010.
• [8] 汤楚强,李加良.铁路货车车体材料的发展与展望[J].铁道车辆,2010,48(5):29-31.TANG Chu-qiang,LI jia-liang.Development and prospect of railway freight car body materials[J].Rolling Stock,2010,48(5):29-31.
• [9] 陆阳.优化B+级铸钢力学性能的工艺实践[J].铸造,2013,62(6):561-565.LU Yang.Process practice on optimization of mechanical properties of B+ grade cast steel[J].Foundry,2013,62(6):561-565.
• [10] 朱正锋,董雯,张俊新.B+级铸钢材料的研制[J].机车车辆工艺,2010(5):4-6.ZHU Zheng-feng,DONG Wen,ZHANG Jun-xin.Development of B+ grade cast steel material[J].Locomotive and Rolling Stock Technology,2010(5):4-6.
• [11] 夏少华,朱正锋,徐贵宝.B+级铸钢中大块珠光体形成原因探讨与消除方法[J].机车车辆工艺,2012(6):24-25.XIA Shao-hua,ZHU Zheng-feng,XU Gui-bao,Discussion on the forming reason and elimination method of bulk pearlite in B+ grade cast steel[J].Locomotive and Rolling Stock Technology,2012(6):24-25.
• [12] 刘云旭.金属热处理原理[M].北京:机械工业出版社,1981.
• [13] 韩波,张福成,吕博,等.贝氏体钢彩色金相的研究[J].金属热处理,2009,34(10):42-45.HAN Bo,ZHANG Fu-cheng,Lü Bo,et al.Colored metallography of bainite steel[J].Heat Treatment of Metals,2009,34(10):42-45.
• [14] 徐长征,何煜天.UNS N10276合金电渣重熔凝固组织及成分偏析研究[J].宝钢技术,2018(3):61-68.XU Chang-zheng,HE Yu-tian.Research on the solidified microstructure and segregation behaviors of UNS N10276 alloy ingot produced by electro-slagremelting[J].Baosteel Technology,2018(3):61-68.
• [15] 宋仲明,焦辉,朱正锋,等.ZG25MnCrNi钢正火组织中贝氏体的形成原因及预防措施分析[J].铸造技术,2015,36(7):1722-1724.SONG Zhong-ming,JIAO Hui,ZHU Zheng-feng,et al.Analysis of formation mechanisms and preventing methods of bainite in ZG25MnCrNi steel after normalizing treatment[J].Foundry Technology,2015,36(7):1722-1724.

文章评论(Comment)：