李胜军,任学冲,高克玮,宿彦京,江波,陈刚,赵海

• 1:北京科技大学材料科学与工程学院
• 2:北京科技大学国家材料服役安全科学中心
• 3:马鞍山钢铁股份有限公司技术中心

摘要(Abstract)：

通过金相显微镜、扫描电镜对车轮钢(CL50)铸态/热轧态和热处理态组织中夹杂物的形态分布进行研究,并利用能谱对夹杂进行成分分析。结果表明,在S含量极低的情况下,CL50车轮钢中氧化物夹杂主要呈球形或多边形,随机分布,在轧制过程中不发生变形;增大S含量,铸态组织中开始出现球状、串珠状以及条状MnS-氧化物复合夹杂物,且有在晶界聚集的趋势,主要分布于网状铁素体或者孤岛铁素体中;热处理后夹杂物则分布于网状铁素体中,说明夹杂物在一定程度上促进铁素体的形核。在890℃热处理过程中夹杂物形态和分布没有明显变化。

关键词(KeyWords)： 车轮钢;夹杂物;热处理;形态和分布

Abstract:

Keywords:

基金项目(Foundation): 国家“863”计划项目(2009AA03Z505);; 第3批中国博士后科学基金特别资助项目(20100355)

作者(Author): 李胜军,任学冲,高克玮,宿彦京,江波,陈刚,赵海

DOI: 10.13289/j.issn.1009-6264.2011.12.011

参考文献(References)：

• [1]Cyril N,Fatemi A.Experimental evaluation and modeling of sulfur content and anisotropy of sulfide inclusions on fatigue behavior of steels[J].International Journal of Fatigue,2009,31:526-537.
• [2]Temmel C,Karlsson B,Ingesten N.Fatigue anisotropy in cross-rolled,hardened medium carbon steel resulting from MnS inclusions[J].Metall MaterTrans A,2006,37:2995-3007.
• [3]Wilson A D.Comparing the Effect of Inclusions on Ductility,Toughness,and Fatigue Properties[M].Philadelphia,American Society for Testing andMaterials,1983.
• [4]杨占兵,王福明,宋波,等.含Ti复合夹杂物对中碳非调质钢组织和力学性能的影响[J].北京科技大学学报,2007,29(11):1096-1100.YANG Zhan-bin,WANG Fu-ming,SONG Bo,et al.Effect of Ti-containing complex inclusions on the microstructure and mechanical properties ofmedium carbon non-quenched and tempered steel[J].Journal of University of Science and Technology Beijing,2007,29(11):1096-1100.
• [5]李新明,郑少波,郑庆,等.钢的氧化物冶金技术[J].上海金属,2005,27(5):55-60.LI Xin-ming,ZHENG Shao-bo,ZHENG Qing,et al.Oxides metallurgy[J].Shanghai Metals,2005,27(5):55-60.
• [6]武会宾,尚成嘉,苑少强,等.超细化低碳贝氏体钢的回火组织稳定性及力学性能[J].材料热处理学报,2004,25(6):65-70.WU Hui-bin,SHANG Cheng-jia,YUAN Shao-qiang,et al.The tempering microstructures and mechanical properties in an ultra-fine low carbonbainitic steel[J].Transactions of Materials and Heat Treatment,2004,25(6):65-70.
• [7]高海潮,史怀言,刘国平,等.快速车轮钢的质量控制[J].钢铁,2000,35(5):26-29.GAO Hai-chao,SHI Huai-yan,LIU Guo-ping,et al.Quality control of high speed wheel steel[J].Iron and Steel,2000,35(5):26-29.
• [8]任学冲,褚武扬,李金许,等.原子氢和白点对车轮钢力学性能影响的进一步研究[J].金属学报,2007,43(1):53-58.REN Xue-chong,CHU Wu-yang,LI Jin-xu,et al.Further investigation of effects of atomic hydrogen and flakes on mechanical properties of wheel steel[J].Acta Metallurgica Sinica,2007,43(1):53-58.
• [9]肖纪美.金属的韧性与韧化[M].上海:上海科学技术出版社,1980.
• [10]张济忠.分形[M].北京:清华大学出版社,2001.
• [11]高德春,李承基,曹凤豫,等.Ca对42MnCr钢显微组织及冲击韧性的影响[J].金属热处理学报,1993,14(3):9-14.GAO De-chun,LI Cheng-ji,CAO Feng-yu,et al.Effect of Ca on microstructures and impact toughness of 42MnCr steel[J].Transactions of Metal HeatTreatment,1993,14(3):9-14.
• [12]夏志新,叶文冰,杨卓越,等.MnS形态对超高强度钢韧性的影响[J].钢铁研究学报,2009,21(3):11-14.XIA Zhi-xin,YE Wen-bing,YANG Zhuo-yue,etal.Effect of morphology of MnS inclusions on toughness of ultra-high strength steel produced bydifferent smelting processes[J].Journal of Iron and Steel Research,2009,21(3):11-14.
• [13]Khaled F A.The grain coarsening and subsequent transformation of austenite in the HSLA steel during high temperature thermomechanical processing[D].Pittsburgh:University of Pittsburgh,2005:115-116.
• [14]Oikawa K.The control of the morphology of MnS inclusion in steel during solidification[J].ISIJ International,1995,35(4):402-408.
• [15]卢献忠,吴润,李书黎,等.热处理对高硫钢硫化物形态及性能的影响[J].武汉科技大学学报,2010,33(2):147-150.LU Xian-zhong,WU Run,LI shu-li,et al.Effect of heat treatment on the morphology of the sulfide in the high sulfide steel and the steel properties[J].Journal of Wuhan University of Science and Technology,2010,33(2):147-150.
• [16]杨志刚.晶内铁素体在夹杂物上的形核机制的讨论[J].金属热处理,2005,30(1):20-23.YANG Zhi-gang.Discussions on nucleation mechanism of intragranular ferrite in inclusions[J].Heat Treatment of Metals,2005,30(1):20-23.
• [17]周传久,戚正风.奥氏体晶粒大小与第二相粒子r/f比值间的关系[J].金属热处理学报,1987,8(2):74-81.ZHOU Chuan-jiu,QI Zheng-feng.The relation between austenite grain size and r/f of the second phase particles[J].Transactions of Metal HeatTreatment,1987,8(2):74-81.

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