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| 激光原位制备颗粒增强铁基复合涂层中碳化物相的形貌分析 | |
| 引用本文： | 吴朝锋,马明星,吴爱平,刘文今,钟敏霖,张伟明,张红军. 激光原位制备颗粒增强铁基复合涂层中碳化物相的形貌分析[J]. 金属学报, 2009, 45(9) |
| 作者姓名： | 吴朝锋 马明星 吴爱平 刘文今 钟敏霖 张伟明 张红军 |
| 作者单位： | 1. 清华大学机械工程系先进成形制造教育部重点实验室,北京,100084 2. 北京光电桔术研究所,北京,100010 |
| 基金项目： | 国家科技部国际科技合作计划专项经费资助项目2007DFA50870~~ |
| 摘 要： | 通过Zr+Ti,Ti+WC以及Zr+Ti+WC的复合添加,运用激光熔覆技术在中碳钢表面原位合成了颗粒增强铁基复合材料涂层,研究了复合碳化物颗粒相的形貌特征.结果表明,当Zr+Ti复合添加时,颗粒相具有包覆结构;当Ti+WC复合添加时,颗粒相易长大成花瓣状,具有层状结构;当Zr+Ti+WC复合添加时,若WC含量较低,颗粒相具有不规则多边形特征,随着WC含量的增加,颗粒相逐渐长大成花瓣状甚至粗大的树枝晶状.通过热力学计算,对复合碳化物的形成过程进行了讨论. |
| 关 键 词： | 激光熔覆 颗粒增强 复合碳化物 铁基复合涂层 热力学 |
MORPHOLOGIC CHARACTERISTICS OF IN SITU SYNTHESIZED CARBIDE PARTICLES IN LASER CLADDED Fe-BASED COMPOSITE COATINGS |
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| WU Chaofeng,MA Mingxing,WU Aiping,LIU Wenjin,ZHONG Minlin,ZHANG Weiming,ZHANG Hongjun. MORPHOLOGIC CHARACTERISTICS OF IN SITU SYNTHESIZED CARBIDE PARTICLES IN LASER CLADDED Fe-BASED COMPOSITE COATINGS[J]. Acta Metallurgica Sinica, 2009, 45(9) | |
| Authors: | WU Chaofeng MA Mingxing WU Aiping LIU Wenjin ZHONG Minlin ZHANG Weiming ZHANG Hongjun |
| Abstract: | Particle reinforced metal matrix composite(PR-MMC) has attracted extensive investigation in material science and engineering.Laser depositing of MMC coatings containing in situ carbide particles is a research focus in laser surface processing field.Recent literatures have indicated that the particle size and distribution play an important role on the wear resistance of laser clad coatings. It is necessary to analyze the morphologic characteristics of the particles.In this paper,particle reinforced Fe-based ... |
| Keywords: | laser cladding particle reinforcement composited carbide Fe-based composite coating thermodynamics |
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