李志超,张小垒,米振莉,李辉

• 1:北京科技大学冶金工程研究院

摘要(Abstract)：

通过扫描电子显微镜、透射电子显微镜、XRD技术、EBSD分析、动态相变规律研究以及力学性能测试,研究了不同热处理工艺及合金元素V的加入对高碳铬轴承钢GCr15的显微组织和性能的影响。结果表明,强碳化物形成元素V添加后,动态CCT曲线向右下方移动,抑制了二次碳化物的析出和珠光体转变,Ms点降低;添加V后,淬回火处理和贝氏体等温淬火处理后强度、硬度和冲击韧性均有不同程度提高;通过添加合金元素V,可以消除淬回火处理过程中出现的淬火微裂纹,提高性能;V的添加还能降低热处理后残留奥氏体含量,提高工件尺寸稳定性;尽管,添加V会很小程度的抑制贝氏体转变,考虑到V对性能的贡献,综合考虑认为,高碳铬轴承钢中添加V利大于弊。

关键词(KeyWords)： 轴承钢;合金元素V;相变;热处理;残留奥氏体;贝氏体等温转变

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划“863”项目(2012AA03A508)

作者(Author): 李志超,张小垒,米振莉,李辉

DOI: 10.13289/j.issn.1009-6264.2015.07.021

参考文献(References)：

• [1]宋维锡.金属学[M].北京:冶金工业出版社,2010.
• [2]郭淑娟,王丽敏.轧后控冷工艺对高碳铬轴承钢网状碳化物的影响研究[J].价值工程,2012,2(1):62-63.GUO Shu-juan,WANG Li-min.Study on the influence on high-carbon chromium bearing steel carbide of controlled cooling process after rolling[J].Value Engineering,2012,2(1):62-63.
• [3]杨洪波,朱伏先,马宝国,等.终轧温度对GCr15轴承钢网状碳化物析出的影响[J].特殊钢,2010,31(1):55-56.YANG Hong-bo,ZHU Fu-xian,MA Bao-guo,et al.Effect of finishing temperature on precipitation of carbide network in bearing steel GCr15[J].Special Steel,2010,31(1):55-56.
• [4]夏伟栋,李铮,郑雨旸,等.连轧后水冷工艺对GCr15轴承钢Φ60mm棒材网状碳化物的影响[J].特殊钢,2008,29(2):63-64.XIA Wei-dong,LI Zheng,ZHENG Yu-yang,et al.Effect of water cooling process after continuous rolling on carbide network of60 mm rod of GCr15bearing steel[J].Special Steel,2008,29(2):63-64.
• [5]阎肃,宋庆功.轧后水冷生产轴承钢的研究[J].材料热处理学报,2008,29(2):80-81.YAN Su,SONG Qing-gong.Experimental study on bearing steel produced by water cooling technology after rolling[J].Transactions of Materials and Heat Treatment,2008,29(2):80-81.
• [6]Lee J S,Song B H,Yoo S J,et al.Characteristics of vanadium alloyed carbonitrided steel for rolling bearing applications[J].Journal of ASTM International,2005,10(3):140-151.
• [7]Chance J,Ridley.Chromium partitioning during isothemal transformation of a eutectoid steel[J].Metallurgical Transactions A,1981,12:1205-1213.
• [8]Tewari S K,Sharma R C.The effect of alloying elements on pearlite growth[J].Metallurgical Transactions A,1985,16:597-603
• [9]Taylor K A.Solubility products for titanium-,vanadium-,and niobium-carbide in ferrite[J].Scripta Metallurgica et Materialia,1995,32(1):7-12
• [10]Khalid F A,Edmonds D V.Interphase precipitation in microalloyed engineering steels and model alloy[J].Materials Science and Technology,1993,9:384-396.
• [11]Marder A R,Benscoter A O.Microcracking in plate martensite of AISI 52100 steel[J].Metallurgical Transactions,1970,22(1)3234-3237.
• [12]Szost B A,Vegter R H,Rivera P E J.Developing bearing steels combining hydrogen resistance and improved hardness[J].Materials and Design,2013,43:499-506.
• [13]Gavriljuk V G.Decomposition of cementite in pearlite steel due to plastic deformation[J].Materials Science and Engineering A,2003,345:81-89.

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