| 40Cr钢磨削淬硬层的磨损试验 |
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| 引用本文： | 刘菊东,陈康敏,侯达盘,曾伟民,王大镇,许志龙.40Cr钢磨削淬硬层的磨损试验[J].金属热处理,2008,33(2):88-90. |
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| 作者姓名： | 刘菊东 陈康敏 侯达盘 曾伟民 王大镇 许志龙 |
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| 作者单位： | 1. 集美大学,机械工程学院,福建,厦门,361021
2. 江苏大学,材料科学与工程学院,江苏,镇江,212013 |
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| 基金项目： | 福建省自然科学基金
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福建省教育厅科研项目
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集美大学校科研和教改项目 |
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| 摘 要： | 在平面磨床上对40Cr钢进行了磨削淬硬处理,研究了磨削淬硬层的组织、耐磨性和磨损机理.结果表明,40Cr钢磨削淬硬层主要由板条马氏体和孪晶马氏体组成,位错密度较高;淬硬层显微硬度高达670 HV0.5,且存在残余压应力.与调质态基体相比,磨削淬硬层的耐磨性提高6～11倍;在干摩擦条件下,磨削淬硬层的磨损机理主要为磨粒磨损和氧化磨损.
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| 关 键 词： | 磨削加工 面淬火 显微组织 残余应力 耐磨性 磨损机理 |
| 文章编号： | 0254-6051(2008)02-0088-01 |
| 收稿时间： | 2007-08-28 |
| 修稿时间： | 2007年8月28日 |
Wear test on grind-hardened layer of 40Cr steel |
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| LIU Ju-dong,CHEN Kang-min,HOU Da-pan,ZENG Wei-min,WANG Da-zhen,XU Zhi-long.Wear test on grind-hardened layer of 40Cr steel[J].Heat Treatment of Metals,2008,33(2):88-90. |
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| Authors: | LIU Ju-dong CHEN Kang-min HOU Da-pan ZENG Wei-min WANG Da-zhen XU Zhi-long |
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| Abstract: | 40Cr steel was grind-hardened on a plane grinder. The microstructure,wear resistance and wear mechanism of the grind-hardened layer were studied. The results indicate that the grind-hardened layer consists of the lath martensite and twin martensite, dislocation density is higher in the lath martensite. The microhardness is up to 670 HV0. 5 and the compressive residual stresses are existing in the grind-hardened layer. Compared with the matrix, the wear resistance of the grind-hardened layer for 40Cr steel is increased by 6 - 11 times. The wear mechanisms of the grind-hardened layer are characterized abrasive and oxidation under dry sliding conditions. |
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| Keywords: | grinding surface hardening microstructure residual stress wear resistance wear mechanism |
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