| 热处理工艺对40Cr组织和性能的影响 |
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| 引用本文： | 葛伊伦,丁义超.热处理工艺对40Cr组织和性能的影响[J].成都电子机械高等专科学校学报,2017,20(1). |
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| 作者姓名： | 葛伊伦 丁义超 |
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| 作者单位： | 成都工业学院 材料科学与工程学院,成都,611730 |
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| 摘 要： | 研究40Cr钢在不同热处理工艺下的组织和耐磨性.结果表明:40Cr最佳的热处理工艺为经850 ℃保温60 min正火,试样硬度约为200 HBS,正火后组织为索氏体;再经780 ℃淬火保温30 min后水冷,试样硬度约为52 HRC,淬火所得组织为板条状马氏体和针状马氏体;最后经200 ℃低温回火后,试样硬度维持在50 HRC以上,所得组织为回火马氏体;经淬火及回火后,试样耐磨性得到显著提高.
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| 关 键 词： | 热处理 淬火 金相显微组织 硬度 耐磨性 |
The Influence of Heat Treatment Process on the Micro-structure and Mechanical Properties of 40Cr |
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| GE Yilun,DING Yichao.The Influence of Heat Treatment Process on the Micro-structure and Mechanical Properties of 40Cr[J].Journal of Chengdu Electromechanical College,2017,20(1). |
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| Authors: | GE Yilun DING Yichao |
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| Abstract: | This article introduces the micro-structure and wear resistance of 40Cr steel under different heat treatment processes.The optimal procedures of heat treatment is as follows: after air-cooled normalizing at 850 ℃ for 60 minutes,the hardness value of the sample is approximately 200HBS with the micro-structure of sorbite.Then the sample reaches the hardness of 52 HRC with the micro-structure of lath and needle-type martensite after quenching at 780 ℃ for 30 minutes.Final heat-treatment of low tempering at 200 ℃ for 60 minutes ended in the micro-structure of tempered martensite while the sample's hardness remains above 50 HRC.Moreover,the wear resistance of 40Cr steel increases dramatically after quenching and tempering. |
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| Keywords: | Heat Treatment Process quenching Metallographic Structure hardness wear resistance |
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