| 无限冷激铸铁表面等离子束合金化强化研究 |
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| 引用本文： | 程秀,胡树兵,宋武林,黄齐文,王海群,章硕,李振.无限冷激铸铁表面等离子束合金化强化研究[J].材料热处理学报,2012,33(Z1):101-106. |
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| 作者姓名： | 程秀 胡树兵 宋武林 黄齐文 王海群 章硕 李振 |
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| 作者单位： | 华中科技大学材料成形与模具技术国家重点实验室,湖北武汉,430074 |
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| 基金项目： | 2010年省部产学研合作重大项目(2010090200047) |
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| 摘 要： | 利用优化的等离子束工艺参数对无限冷激铸铁表面进行合金化强化处理,并经650℃高温回火处理,获得高硬度、耐磨的合金化层组织.利用扫描电镜(SEM)、X射线衍射仪(XRD)、显微硬度计对等离子束合金化层进行分析,并对摩擦磨损性能进行了分析.试验结果表明,合金化层与基体之间实现了冶金结合,并形成了以莱氏体、马氏体、碳化物为主的显微组织,合金化层的细晶强化和回火弥散析出强化等强化作用,使显微硬度高达1200 HV0.2,合金化加回火处理后的耐磨性相对于基体提高了大约2倍.
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| 关 键 词： | 等离子束表面合金化 回火处理 显微组织 显微硬度 耐磨性 |
Research on plasma alloying strengthening treatment on infinite chilled cast iron |
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| CHENG Xiu,HU Shu-bing,SONG Wu-lin,HUANG Qi-wen,WANG Hai-qun,ZHANG Shuo,LI Zhen.Research on plasma alloying strengthening treatment on infinite chilled cast iron[J].Transactions of Materials and Heat Treatment,2012,33(Z1):101-106. |
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| Authors: | CHENG Xiu HU Shu-bing SONG Wu-lin HUANG Qi-wen WANG Hai-qun ZHANG Shuo LI Zhen |
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| Affiliation: | (State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Alloyed coatings on surface of the infinite chilled cast iron with high hardness and wear resistance were obtained by plasma alloying technology and tempering at 650 ℃.The microstructure and composition of the plasma alloyed coatings were analyzed by means of scanning electron microscope(SEM),X-ray diffractometer(XRD).The hardness and wear resistance of the coatings were detected by micro hardness meter and abrasion tester.Results indicate that the alloyed coating is well aligned with substrate and the microstructure of this coating is mainly ledeburite,martensite and carbide.The microhardness of the alloyed coating is 1200 HV0.2 and the wear resistance can be increased about twice compared with the base metal due to grain refining strengthening and precipitate strengthening. |
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| Keywords: | plasma alloying tempering microstructure microhardness wear resistance |
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