不同等温温度对珠光体型高铁车轮钢组织及耐磨性的影响

doi:10.13251/j.issn.0254-6051.2020.11.011

摘要/Abstract

摘要： 利用激光共聚焦显微镜和扫描电镜对一种珠光体型高铁车轮钢的组织和磨损形貌等进行了观察,研究了不同等温温度对其组织及耐磨性的影响。试验结果表明:在珠光体转变温度内对试验钢进行热处理得到了珠光体组织,随着等温温度的升高,珠光体片层间距增加,珠光体团尺寸减小,试验钢的显微硬度减小,珠光体钢的磨损量则增加。使用SiC粒度大的砂纸研磨后,珠光体钢的磨损量也增加了。珠光体钢的磨损表面呈现深浅程度不一的犁沟,磨损表面还存在一系列的剥离坑和细小的微裂纹,犁沟深度随着等温温度升高而逐渐增加。充分证明了珠光体片层间距越小的试验钢,其耐磨性能也越优异。

关键词: 珠光体型高铁车轮钢, 等温温度, 磨料磨损, 表面形貌, 耐磨性

Abstract: Effect of different isothermal temperatures on the microstructure and wear resistance of a pearlitic wheel steel for high-speed railway was studied, and the microstructure and wear morphologies were observed by laser confocal microscope and scanning electron microscope. The results show that the pearlite microstructure is obtained by heat treatment within the pearlite transition temperature range. As the isothermal temperature increases, the interlamellar spacing of pearlite increases, the pearlite colony size decreases, and the microhardness of the tested steel decreases, while the wear loss of the pearlitic steel increases. And after grinding by sandpaper with large SiC particles, the wear loss of the pearlitic steel also increases. The worn surface of the pearlitic steel shows ploughing of varying depth with a series of spalling pits and tiny micro-cracks on it, and the ploughing depth increases with the increase of isothermal temperature. It is proved that the smaller the lamellar spacing of pearlite is, the better the wear resistance of the tested steel is.

Key words: pearlitic steel, isothermal temperature, abrasive wear, surface morphologies, wear resistance

中图分类号:

TG142.1

娄殿川, 赵爱民, 裴伟, 刘涵赜. 不同等温温度对珠光体型高铁车轮钢组织及耐磨性的影响[J]. 金属热处理, 2020, 45(11): 56-61.

Lou Dianchuan, Zhao Aimin, Pei Wei, Liu Hanze. Effect of different isothermal temperatures on microstructure and wear resistance of pearlitic wheel steel for high-speed railway[J]. Heat Treatment of Metals, 2020, 45(11): 56-61.

参考文献

[1]Chen J K, Spencer C W, Ekstrand M E, et al. Eutectoid decomposition in Ag-Ga[J]. Metallurgical and Materials Transactions A, 1996, 27(6): 1683-1689.
[2]Lvanisenko Yu, Lojkowski W, Valiew R Z, et al. The mechanism of formation of nanostructure and dissolution of cementite in a pearlitic steel during high pressure torsion[J]. Acta Materialia, 2003, 51(18): 5555-5570.
[3]Doi S N, Kestenbach Hans-Jürgen. Determination of the pearlite nodule size in eutectoid steels[J]. Metallography, 1989, 23(2): 135-146.
[4]Elwazri A M, Wanjara P, Yue S. The effect of microstructural characteristics of pearlite on the mechanical properties of hypereutectoid steel[J]. Materials Science and Engineering A, 2005, 404(1/2): 91-98.
[5]Alexander D J, Bernstein I M. Cleavage fracture in pearlitic eutectoid steel[J]. Metallurgical Transactions A, 1989, 20(11): 2321-2335.
[6]Hu Jun, Du Linxiu, Wang Jianjun, et al. Cooling process and mechanical properties design of hot-rolled low carbon high strength microalloyed steel for automotive wheel usage[J]. Materials and Design, 2014, 53: 332-337.
[7]Modi O P, Deshmukh N, Mondal D P, et al. Effect of interlamellar spacing on the mechanical properties of 0.65%C steel[J]. Materials Characterization, 2001, 46(5): 347-352.
[8]李俊杰, Andrew G, 刘伟. 奥氏体化与冷却速率对过共析钢组织的影响[J]. 金属学报, 2013, 49(5): 583-592.
Li Junjie, Andrew G, Liu Wei. Effect of austenitization and cooling rates on the microstructure in a hypereutectoid steel[J]. Acta Metallurgica Sinica, 2013, 49(5): 583-592.
[9]Fernández-vicente A, Carsí M, Peñalba F, et al. The fracture toughness of an ultrahigh carbon steel containing 1.5wt%C[J]. Fatigue and Fracture of Engineering Materials and Structures, 2006, 29(9/10): 817-828.
[10]Xu Jinqiao, Liu Yazheng, Zhou Shumei. Calculation models of interlamellar spacing of pearlite in high-speed 82B rod[J]. Journal of Iron and Steel Research International, 2008, 15(4): 57-60.
[11]吴庆辉, 杨忠民, 陈颖, 等. 相变温度对珠光体轨钢组织和性能的影响[J]. 热加工工艺, 2012, 41(10): 67-70.
Wu Qinghui, Yang Zhongmin, Chen Ying, et al. Effect of transformation temperature on microstructure and properties of fully pearlite rail steel[J]. Hot Working Technology, 2012, 41(10): 67-70.
[12]梁宇, 余凌峰, 梁益龙. 珠光体钢微观组织与拉伸性能关系[J]. 材料热处理学报, 2013, 34(7): 73-77.
Liang Yu, Yu Linfeng, Liang Yilong. Relationship between microstructure and tensile properties of a pearlitic steel[J]. Transactions of Materials and Heat Treatment, 2013, 34(7): 73-77.
[13]田新中. 形变温度和冷却方式对中碳钢显微组织及拉拔性能的影响[J]. 河北冶金, 2017(6): 1-7.
Tian Xinzhong. Effect of deformation temperature and cooling mode on microstructure and drawing properties of medium carbon steel[J]. Hebei Metallurgical, 2017(6): 1-7.
[14]魏泽民, 梁宇, 梁益龙, 等. 高碳钢中珠光体片层与先共析铁素体对断裂韧性的影响[J]. 材料热处理学报, 2016, 37(1): 126-132.
Wei Zemin, Liang Yu, Liang Yilong, et al. Influence of pearlite lamination and proeutectoid ferrite on fracture toughness in high carbon steel[J]. Transactions of Materials and Heat Treatment, 2016, 37(1): 126-132.
[15]陈彦佐. 擦伤对车轮材料磨损及滚动接触疲劳的影响研究[D]. 成都: 西南交通大学, 2018.
[16]曾东方. 高速铁路车轮钢磨损和滚动接触疲劳性能的改善方法研究[D]. 成都: 西南交通大学, 2017.
[17]Zhou Y, Peng J F, Wang W J, et al. Slippage effect on rolling contact wear and damage behavior of pearlitic steels[J]. Wear, 2016, 362-363: 78-86.
[18]易平. 高速列车车轮钢磨损模拟试验研究[D]. 成都: 西南交通大学, 2011.
[19]Perez-Unzueta A J, Beynon J H. Microstructure and wear resistance of pearlitic rail steels[J]. Wear, 1993, 162-164: 173-182.
[20]Ma L, Shi L B, Guo J, et al. On the wear and damage characteristics of rail material under low temperature environment condition[J]. Wear, 2018, 394-395: 149.
[21]Zeng Dongfang, Lu Liantao, Zhang Ning, et al. Effect of different strengthening methods on rolling/sliding wear of ferrite-pearlite steel[J]. Wear, 2016, 358-359: 62-71.
[22]Donzella G, Faccoli M, Mazzù A, et al. Progressive damage assessment in the near-surface layer of railway wheel-rail couple under cyclic contact[J]. Wear, 2011, 271 (1/2): 408-416.
[23]Lancini M, Bodini I, Vetturi D, et al. Using vibrations to detect high wear rates in rolling contact fatigue tests[J]. Acta Imeko, 2015, 4(4): 66-74.
[24]Mazzù A, Petrogalli C, Faccoli M. An integrated model for competitive damage mechanisms assessment in railway wheel steels[J]. Wear, 2015, 322-323: 181-191.
[25]郭辉. 超细贝氏体钢低温相变加速技术及其塑性变形规律[D]. 北京: 北京科技大学, 2018.
[26]孙宜强, 陈雪艳, 张萍, 等. 72A 盘条索氏体体积分数测量方法分析与讨论[J]. 物理测试, 2015, 33(5): 25-28.
Sun Yiqiang, Chen Xueyan, Zhang Ping, et al. Analysis and discussion of measurement method of 72A steel wire rod[J]. Physics Examination and Testing, 2015, 33(5): 25-28.
[27]张超, 郭辉, 王家星, 等. 等温淬火温度对超细贝氏体钢组织及耐磨性的影响[J]. 工程科学学报, 2018, 40(12): 1502-1509.
Zhang Chao, Guo Hui, Wang Jiaxing, et al. Effect of isothermal quenching temperature on microstructure and wear resistance of ultrafine bainite steel[J]. Journal of Engineering Science, 2018, 40(12): 1502-1509.