| 稀土镁合金的YAG激光快速熔凝研究 | |
| Alternative Title | Rapid Solidification Behavior of RE-containing Magnesium Alloys Induced by Laser Surface Remelting |
| 陈长军1; 张敏1; 张诗昌1; 常庆明1; 王茂才2 | |
| 2009 | |
| Source Publication | 应用激光
 |
| ISSN | 1000-372X |
| Volume | 000Issue:003Pages:181-188,198 |
| Abstract | Mg及其合金由于密度低、加工性能好和比强度高而在轻金属中占有较大的比重。其差的耐蚀性成为其广泛应用的最大障碍。研究采用激光表面处理的办法对铸态的ZM2、ZM5和ZM6合金进行了提高耐蚀性和显微硬度的实验。实验采用500WNd：YAG脉冲激光器进行重熔和快淬ZM2、ZM5和ZM6合金表面。对激光表面处理区的显微组织与原基材的组织采用金相显微镜和扫描电镜进行了对比观察。采用阳极动电位测试的办法对激光处理区和基材放在NaCl溶液中进行了耐蚀性表征，经激光处理后耐蚀性得到提高。 |
| Other Abstract | Mg and its alloys occupy a prominent position due to its low density, excellent machinability and high specific strength. Poor corrosion resistance is a major obstacle in widespread application of Mg alloys. In the present study, an attempt was made to improve the corrosion resistance and microhardnes of cast Mg alloys ZM2, ZM5 and ZM6 were subjected to laser treatments. A 500W pulsed Nd：YAG laser was used to melt and rapidly quench the surface of the cast ZM2, ZM5 and ZM6 alloy. Comparison of the laser treatment surface microstrueture with the bulk microstructure, as observed by reflected optical microscope and scanning electron microscope（SEM） demonstrates significant alternations. Anodic polarization tests of the laser treated and untreated specimens in sodium chloride （NaC1） have suggested a variation in corrosion behavior with improvements in corrosion resistance. |
| Keyword | 激光表面重熔 镁合金 腐蚀 稀土 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:3719356 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/146993 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.武汉科技大学 2.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | 陈长军,张敏,张诗昌,等. 稀土镁合金的YAG激光快速熔凝研究[J]. 应用激光,2009,000(003):181-188,198. |
| APA | 陈长军,张敏,张诗昌,常庆明,&王茂才.(2009).稀土镁合金的YAG激光快速熔凝研究.应用激光,000(003),181-188,198. |
| MLA | 陈长军,et al."稀土镁合金的YAG激光快速熔凝研究".应用激光 000.003(2009):181-188,198. |
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