| AZ31B镁合金表面激光合金化Al-SiC涂层制备及其性能研究 |
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| 引用本文： | 谭永全,彭如恕,刘祥. AZ31B镁合金表面激光合金化Al-SiC涂层制备及其性能研究[J]. 现代机械, 2014, 0(2): 77-80 |
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| 作者姓名： | 谭永全 彭如恕 刘祥 |
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| 作者单位： | 南华大学机械工程学院,湖南衡阳421001 |
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| 摘 要： | 针对镁合金表面耐磨性差,采用预置粉末法对AZ31B表面进行激光合金化Al-SiC粉末实验。使用光学显微镜和扫描电子显微镜(SEM)、能谱分析仪(EDS)、摩擦磨损试验机、显微硬度计对合金化涂层的微结构、相组成及性能进行了分析研究。结果表明,强化层与基体呈冶金结合、组织均匀致密;合金化层主要由Mg17Al12、SiC、Mg2Si、Al4C5、Al2O3等相组成。涂层的显微硬度、耐磨损性能都明显高于基体。
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| 关 键 词： | AZ31B 激光合金化 显微组织 显微硬度 耐磨损性能 |
Microstructure and properties of laser alloying with Al-SiC powders on AZ31B magnesium alloy |
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| TAN Yongquan,PENG Rushu,LIU Xiang. Microstructure and properties of laser alloying with Al-SiC powders on AZ31B magnesium alloy[J]. Modern Machinery, 2014, 0(2): 77-80 |
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| Authors: | TAN Yongquan PENG Rushu LIU Xiang |
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| Affiliation: | TAN Yongquan, PENG Rushu, LIU Xiang |
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| Abstract: | To improve wear resistance of the surface of magnesium alloy, Laser alloying of A1 - SiC powders coating on AZ31 B magnesium alloy is achieved by the method of replaced- powder. The composition microstructure of the coating are analyzed by light microscope,scanning electron microscope （SEM） and energy disperse spectroscopy. Surface properties of the coating are evaluated using a micro - hardness tester and a abrasion tester condition at room temperature. The results show that the AI - SiC alloying layers are well bonded with the substrate ;The alloying coating is composed of Mg17 AI12,SIC, Mg2 Si,A14 C5 and A12 03. Microhardness, wear resistance are obviously higher than that of matrix. |
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| Keywords: | AZ31 B laser alloying microstructures micro hardness wear properties |
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