| 激光重熔处理对AZ31镁合金表面特性的影响 |
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| 引用本文： | 卫中山,刘六法. 激光重熔处理对AZ31镁合金表面特性的影响[J]. 特种铸造及有色合金, 2011, 31(6). DOI: 10.3870/tzzz.2011.06.005 |
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| 作者姓名： | 卫中山 刘六法 |
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| 作者单位： | 1. 汉胜工业设备(上海)有限公司
2. 上海三电贝洱汽车空调有限公司 |
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| 摘 要： | 使用Nd-YAG激光器对AZ31镁合金板材表面进行了激光重熔处理,分析了激光重熔处理对其表面特性的影响.在激光扫描时,试样表面发生了快速熔凝,处理层可分为重熔区、热影响区两部分.重熔区的晶粒得到明显细化,硬度比基体提高5%.腐蚀试验表明,AZ31镁合金在激光重熔处理后,在3.5%的NaCl溶液中的耐蚀性得到明显改善.重熔区晶粒细化和Al元素富集是激光重熔表面处理提高其耐蚀性的主要因素.
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| 关 键 词： | 镁合金 激光重熔 显微组织 耐蚀性 |
Effects of Laser Cladding Treatment on Surface Performance of AZ31 Magnesium Alloy |
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| Wei Zhongshan,Liu Liufa. Effects of Laser Cladding Treatment on Surface Performance of AZ31 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2011, 31(6). DOI: 10.3870/tzzz.2011.06.005 |
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| Authors: | Wei Zhongshan Liu Liufa |
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| Affiliation: | Wei Zhongshan1,Liu Liufa2 (1. Hamilton-sundstrand Industrial (Shanghai) Co.,Ltd.,2. Shanghai sandian Bel Conditioner for Automobile Co.Ltd) |
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| Abstract: | Effects of laser cladding treatment on surface performance of AZ31 magnesium alloy sheet were observed by the help of Nd-YAG laser. Rapid melting-solidification occurs on the surface of the AZ31 magnesium alloy sheet, and treated surface is composed of re-melting zone and heat history zone. Grain size is apparently refined in the re-melting zone, and hardness is increased by 5% compared to that of the matrix. Immersing corrosion experiment shows that corrosion resistance of AZ31 magnesium alloy with laser c... |
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| Keywords: | Magnesium Alloy Laser Cladding Treatment Microstructure Corrosion Resistance |
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