| 激光冲击成形AZ31镁合金微观结构和性能的研究 |
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| 引用本文： | 张青来,段钧剑,钱 阳,王 荣,匡雁锐,张永康. 激光冲击成形AZ31镁合金微观结构和性能的研究[J]. 稀有金属材料与工程, 2015, 44(8): 1899-1903 |
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| 作者姓名： | 张青来 段钧剑 钱 阳 王 荣 匡雁锐 张永康 |
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| 作者单位： | 江苏大学，江苏 镇江 212013 |
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| 基金项目： | 国家自然科学基金资助项目（51175231） |
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| 摘 要： | 采用最大输出激光脉冲能量为12.5 J的Thales Laser激光器对AZ31镁合金交叉轧制薄板进行激光冲击成形(LSF),在此基础上研究和分析了激光冲击表面结构和电化学特性。结果表明:LSF属于厚度减薄机制,失效形式具有韧性断裂和脆性断裂混合特征;LSF内凹面出现了纹理清晰的周期性波纹结构,波纹间距为纳米级,伴随着激光冲击强化效应和微观结构改变,镁合金耐腐蚀性得到提高。
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| 关 键 词： | AZ31镁合金；激光冲击成形；微观结构；残余应力；电化学腐蚀 |
| 收稿时间： | 2014-08-19 |
Microstructure and Performances of AZ31 Magnesium Alloy by Laser Shock Forming |
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| Zhang Qinglai,Duan Junjian,Qian Yang,Wang Rong,Kuang Yanrui and Zhang Yongkang. Microstructure and Performances of AZ31 Magnesium Alloy by Laser Shock Forming[J]. Rare Metal Materials and Engineering, 2015, 44(8): 1899-1903 |
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| Authors: | Zhang Qinglai Duan Junjian Qian Yang Wang Rong Kuang Yanrui Zhang Yongkang |
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| Affiliation: | Jiangsu University, Zhenjiang 212013, China |
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| Abstract: | The cross-rolled AZ31 magnesium alloy sheets were laser shocked by the Thales Laser with the maximum output laser pulse energy of 12.5 J. Then the surface microstructure and electrochemical properties of the alloy after laser shocking forming (LSF) was studied. The results show that LSF belongs to thinning mechanism, its failure mode exhibits a mixed feature of ductile fracture and brittle fracture. Periodic wave structure with clear texture is observed in the LSF concave, and the values of spacing between waves reach to nanoscale. The corrosion resistance of magnesium alloy is improved by the laser shocking peening effect and the microstructure change |
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| Keywords: | AZ31 magnesium alloy laser shock forming (LSF) microstructure residual stress electrochemical corrosion |
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