| 9Cr2Mo冷轧辊用钢的激光淬火试验 |
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| 引用本文： | 姚成武,黄坚,张培磊,吴毅雄.9Cr2Mo冷轧辊用钢的激光淬火试验[J].金属热处理,2009,34(7). |
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| 作者姓名： | 姚成武 黄坚 张培磊 吴毅雄 |
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| 作者单位： | 上海交通大学,材料科学与工程学院,上海,200240;上海市激光制造与材料改性重点实验室,上海交通大学,上海,200240 |
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| 基金项目： | 上海市激光制造与材料改性重点实验室 |
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| 摘 要： | 采用硬度测试、显微组织和断口分析,对经激光淬火处理后的9Cr2Mo冷轧辊用钢进行了研究.结果表明,与常规淬火相比,9Cr2Mo钢激光淬火后硬度明显提高,但激光淬火搭接区出现硬度值陡降,其原因为搭接区的马氏体组织回火分解;常规淬火处理后的9Cr2Mo钢内有条、块状碳化物,断口为脆性解理断裂特征;而激光淬火后,条块状碳化物溶解或部分溶解,未完全溶解的碳化物细化成球形颗粒,其断口为浅韧窝+脆性准解理的断裂特征.
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| 关 键 词： | 9Cr2Mo钢冷轧辊 激光淬火 回火软化 未熔碳化物 球形颗粒 |
Experiments on laser hardening of 9Cr2Mo steel for cold roller |
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| YAO Cheng-wu,HUANG Jian,ZHANG Pei-lei,WU Yi-xiong.Experiments on laser hardening of 9Cr2Mo steel for cold roller[J].Heat Treatment of Metals,2009,34(7). |
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| Authors: | YAO Cheng-wu HUANG Jian ZHANG Pei-lei WU Yi-xiong |
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| Abstract: | 9Cr2Mo steel for cold roller after laser hardening was studied with hardness test,microstructure and fracture analysis.The results show that comparing with traditional hardening,the hardness of 9Cr2Mo steel after laser hardening is increased significantly,but the hardness in laser overlapping zones declines obviously for the tempering and decomposition of martensite.9Cr2Mo steel treated by traditional hardening contains a large amount of carbide blocks and bands,and its fracture morphology presents a brittl... |
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| Keywords: | 9Cr2Mo steel cold roller laser hardening tempering softening undissolved carbide spherical particle |
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