| AZ91D镁合金Al-Si粉末激光合金化及腐蚀性能 |
| |
| 引用本文： | 李达,钱鸣,金昌,李慧. AZ91D镁合金Al-Si粉末激光合金化及腐蚀性能[J]. 中国激光, 2008, 35(9): 1395-1400 |
| |
| 作者姓名： | 李达 钱鸣 金昌 李慧 |
| |
| 作者单位： | 北京工业大学激光工程研究院,北京,100022 |
| |
| 基金项目： | 北京市教委科研面上项目 |
| |
| 摘 要： | 采用Al-Si粉末对AZ91D镁合金进行了同步送粉激光合金化研究,以期改善镁合金的耐腐蚀性能.讨论了激光加工参数与合金化层几何尺寸的对应关系;采用扫描电镜(SEM)、能谱分析仪(EDS)、X射线衍射仪(XRD)等材料表征手段分析了合金化层显微组织的结构特征.通过阳极极化实验评价了AZ91D镁合金激光合金化组织的腐蚀性能.结果表明,AZ91D镁合金激光合金化表层的耐腐蚀性能明显提高;剖析了Mg2Si,Al12Mg17,Al3Mg2等金属间化合物(IMC)的耐腐蚀作用.
|
| 关 键 词： | 激光技术 合金化 镁合金 金属间化合物 腐蚀 |
| 收稿时间： | 2007-04-10 |
Laser Alloying of Magnesium Alloy AZ91 D with AI-Si Powder and Its Corrosion Performance |
| |
| Li Da,Qian Ming,Jin Chang,Li Hui. Laser Alloying of Magnesium Alloy AZ91 D with AI-Si Powder and Its Corrosion Performance[J]. Chinese Journal of Lasers, 2008, 35(9): 1395-1400 |
| |
| Authors: | Li Da Qian Ming Jin Chang Li Hui |
| |
| Abstract: | Laser alloying of magnesium alloy AZ91D with direct Al-Si power feeding for improvement of corrosion resistance was investigated.The relationship between laser alloying parameters and dimensions of alloyed layers was studied.The microstructural features of the alloyed layer were characterized by using scanning electronic microscope(SEM),energy disperse spectroscopy(EDS) and X-ray diffraction(XRD).Anodic polarization test was applied to evaluate the corrosion performance of AZ91D alloyed layer,which yielded enhanced corrosion resistance.The contribution of the intermetallic compounds(IMCs) of Mg2Si,Al12Mg17,Al3Mg2 in alloyed layers to corrosion resistance was studied. |
| |
| Keywords: | laser technique alloying magnesium alloys intermetallic compound corrosion |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
