宁玉亮,何康,刘年富,李祥龙,李烈军,霍向东

• 1:江苏大学材料科学与工程学院
• 2:宝钢集团广东韶关钢铁集团有限公司
• 3:华南理工大学机械与汽车工程学院

摘要(Abstract)：

由于相变过程中转变量较少,所以难以通过膨胀法测定轴承钢先共析渗碳体的相变温度。本文采用Gleeble3800热模拟实验机,研究在不同冷速下GCr15轴承钢的相变规律,首先通过膨胀法测得珠光体的相变温度区间约为550～700℃,以此为基础,采用金相法研究了先共析渗碳体的相变温度范围约为700～900℃,绘制出GCr15轴承钢完整的相变温度曲线。在此基础上,讨论了采用两阶段冷却工艺抑制先共析渗碳体形成的方案,为现场生产控制GCr15轴承钢中的网状碳化物提供了依据。

关键词(KeyWords)： GCr15轴承钢;珠光体相变;先共析渗碳体;膨胀法;金相法

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 宁玉亮,何康,刘年富,李祥龙,李烈军,霍向东

DOI: 10.13289/j.issn.1009-6264.2019-0047

参考文献(References)：

• [1] 李昭昆,雷建中,徐海峰,等.国内外轴承钢的现状与发展趋势[J].钢铁研究学报,2016,28(3):1-12.LI Zhao-kun,LEI Jian-zhong,XU Hai-feng,et al.Current status and development trend of bearing steel in China and abroad[J].Journal of Iron and Steel Research,2016,28(3):1-12.
• [2] Huo X D,Tian Z Z,Li L J,et al.Effect of cooling rate on microstructure and transformation temperature of GCr15 bearing steel[C]//International Conference on Materials Science and Energy Engineering,2015:220-225.
• [3] Sun Y K,WU D.Effect of ultra-fast cooling on microstructure of large section bars of bearing steel[J].Journal of Iron and Steel Research International,2009,16(5):61-80.
• [4] 李辉,房洪杰,代永娟,等.GCr15轴承钢相变规律及合金元素的影响[J].热加工工艺,2016(20):72-74.LI Hui,FANG Hong-jie,DAI Yong-juan,et al.Phase transformation behavior of GCr15 bearing steel and influence of alloy elements[J].Hot Working Technology,2016(20):72-74.
• [5] Chang L M,Liu J H,Wang H Y,et al.Spheroidization and ostwald growth of carbide in isothermal process of hot-deformed high carbon chromium cast steel[J].Journal of Iron and Steel Research(International),2003,10(1):36-39.
• [6] 霍向东,李烈军.钢的物理冶金——思考,方法和实践[M].北京:冶金工业出版社,2017.
• [7] 孙岩,赵亮,安治国,等.GCr15SiMn轴承钢的连续冷却转变[J].金属热处理,2018,43(6):24-27.SUN Yan,ZHAO Liang,AN Zhi-guo,et al.Continuous cooling transformation of GCr15SiMn bearing steel[J].Heat Treatment of Metals,2018,43(6):24-27.
• [8] 张小垒,李辉,徐士新,等.GCr15钢连续冷却过程中的相变和组织演变[J].金属热处理,2014,39(3):99-102.ZHANG Xiao-lei,LI Hui,XU Shi-xin,et al.Phase transformation and microstructure evolution of GCr15 steel during continuous cooling[J].Heat Treatment of Metals,2014,39(3):99-102.
• [9] 沈千成.高标轴承钢SUJ2的质量控制研究[D].马鞍山:安徽工业大学,2017.SHEN Qian-cheng.Quality controlling research of high standard bearing steel SUJ2[D].Ma'anshan:Anhui University of Technology,2017.
• [10] 田振卓,霍向东,李烈军,等.轧后冷却速率对GCr15钢棒材组织的影响[J].轧钢,2015,32(6):27-32.TIAN Zhen-zhuo,HUO Xiang-dong,LI Lie-jun,et al.Effect of cooling rate after rolling on microstructure of GCr15 bearing steel[J].Steel Rolling,2015,32(6):27-32.
• [11] 霍向东,刘江,李烈军,等.终轧工艺及轧后冷速对GCr15SiMn钢相变组织的影响[J].材料热处理学报,2017,38(2):118-124.HUO Xiang-dong,LIU Jiang,LI Lie-jun,et al.Effect of finish rolling process and cooling rate after rolling on transformation microstructure of GCr15SiMn steel[J].Transactions of Materials and Heat Treatment,2017,38(2):118-124.
• [12] 王广山.大断面轴承钢的控制冷却[D].鞍山:辽宁科技大学,2006.WANG Guang-shan.Controlled cooling of big section bearing steel bar[D].Anshan:Liaoning University of Science and Technology,2006.
• [13] 李辉.高碳铬轴承钢中碳化物演变及贝氏体相变行为[D].北京:北京科技大学,2015.LI Hui.Carbide evolution and bainite transformation behavior of high-carbon-chromium bearing steel[D].Beijing:Beijing University of Science and Technology,2015.
• [14] 赵宪明,孙艳坤,吴迪.GCr15轴承钢高温变形后控冷工艺的研究[J].材料科学与工艺,2010,18(2):216-220.ZHAO Xian-ming,SUN Yan-kun,WU Di.Controlled cooling of GCr15 bearing steel after high temperature deformation[J].Materials Science and Technology,2010,18(2):216-220.
• [15] 孙艳坤.轴承钢热轧组织控制机理与超快速冷却研究[D].沈阳:东北大学,2009.SUN Yan-kun.Research of microstructure controlling mechanism and ultra-fast cooling process of bearing steel after hot rolling[D].Shenyang:Northeast University,2009.
• [16] 孙艳坤.GCr15钢棒材热变形后冷却工艺对显微组织的影响[J].金属热处理,2011,36(12):9-11.SUN Yan-kun.Effect of cooling process after hot deformation on microstructure of GCr15 steel bar[J].Heat Treatment of Metals,2011,36(12):9-11.

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