| 激光熔炼W/W2Ni3Si金属硅化物“原位”复合材料的耐磨性 |
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| 引用本文： | 张长利,王华明,栾德艳,张凌云,席文君. 激光熔炼W/W2Ni3Si金属硅化物“原位”复合材料的耐磨性[J]. 金属学报, 2003, 39(7): 767-770 |
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| 作者姓名： | 张长利 王华明 栾德艳 张凌云 席文君 |
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| 作者单位： | 北京航空航天大学材料科学院激光材料加工与表面工程实验室，北京 100083 |
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| 基金项目： | 国家自然科学基金50071004，国家863计划2002AA331030，北京市自然科学基金2022012，航空基础科学基金02H51011及教育部跨世纪优秀人才培养计划基金资助项目 |
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| 摘 要： | 采用水冷铜模激光合金熔炼炉制备了以初生w树枝晶为增强相、以w2Ni3Si三元金属硅化物为基体的金属硅化物“原位”耐磨复合材料．分别在室温干滑动磨损及600℃高温滑动磨损条件下测试了上述W／W2Ni3Si金属硅化物“原位”增强耐磨复合材料的耐磨性，并讨论了其磨损机理．结果表明，上述金属硅化物耐磨复合材料在室温干滑动磨损和高温滑动磨损条件下均具有优异的耐磨性能．
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| 关 键 词： | 金属硅化物，显微组织， “原位”复合材料，磨损，激光熔炼 |
| 文章编号： | 0412-1961(2003)07-0767-04 |
| 修稿时间： | 2002-09-11 |
Wear Properties of Laser Melted W/W2Ni3Si Metal Silicides Matrix in situ Composites |
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| ZHANG Changli,WANG Huaming. Wear Properties of Laser Melted W/W2Ni3Si Metal Silicides Matrix in situ Composites[J]. Acta Metallurgica Sinica, 2003, 39(7): 767-770 |
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| Authors: | ZHANG Changli WANG Huaming |
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| Abstract: | Tungsten reinforced W2Ni3Si matrix in situ composites consisting of primary tungsten dendrites and the interdendritic W2Ni3Si ternary metal silicide were fabricated by the LasmeltTM process using a newly patented laser melting furnace. Microstructure of the laser melted W/W2Ni3Si composites was characterized by OM, SEM, XRD and EDS. Room and high temperature wear properties were evaluated under metallic sliding wear test conditions and the wear mechanism was discussed. Because of the unique combination of high strength and ductility of the tungsten reinforcing phase and the high hardness and strong intermetallic atomic bonds of the ternary metal silicide W2Ni3Si matrix, the W/W2Ni3Si in situ composites have excellent wear resistance under both room and high temperature sliding wear test conditions. |
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| Keywords: | metal silicide microstructure in situ composite wear laser melting |
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