| 镁合金激光焊接气孔问题的实验研究 |
| |
| 引用本文： | 单际国,张婧,郑世卿,陈武柱,任家烈.镁合金激光焊接气孔问题的实验研究[J].稀有金属材料与工程,2009,38(Z3). |
| |
| 作者姓名： | 单际国 张婧 郑世卿 陈武柱 任家烈 |
| |
| 作者单位： | 1. 清华大学,北京,100084;先进成形制造教育部重点实验室,北京,100084
2. 清华大学,北京,100084 |
| |
| 基金项目： | 国家自然科学基金资助项目，高等学校博士学科点专项科研基金项目 |
| |
| 摘 要： | 对变形镁合金AZ31B、AZ80A,砂铸镁合金AM60B、AZ91D及压铸镁合金AM50A激光焊接气孔倾向进行研究.研究表明:变形镁合金激光焊气孔倾向很小,在较宽的焊接工艺参数范围内均能得到无气孔的焊缝. 砂铸镁合金AM60B及AZ91D激光焊时气孔对气体保护条件非常敏感,在侧吹气体保护角度及流量选择不合适时气孔率非常高,在优化的气保护条件下可得到气孔率较低的焊缝.而压铸镁合金AM50激光焊缝中气孔问题非常突出,调整工艺参数无法解决气孔问题,焊接过程中的加热及添加填充材料可以在一定程度上减少气孔.
|
| 关 键 词： | 气孔 激光焊接 变形镁合金 砂铸镁合金 压铸镁合金 |
Experimental Study on Pores in Laser Welding of Magnesium Alloys |
| |
| Shan Jiguo,Zhang Jing,Zheng Shiqing,Chen Wuzhu,Ren Jialie.Experimental Study on Pores in Laser Welding of Magnesium Alloys[J].Rare Metal Materials and Engineering,2009,38(Z3). |
| |
| Authors: | Shan Jiguo Zhang Jing Zheng Shiqing Chen Wuzhu Ren Jialie |
| |
| Affiliation: | Shan Jiguo1,2,Zhang Jing1,Zheng Shiqing1,Chen Wuzhu1,Ren Jialie1 (1. Tsinghua University,Beijing 100084,China) (2. Key Lab. for Advanced Materials Processing Technology,Ministry of Education,China) |
| |
| Abstract: | Tendency to pore formation of wrought magnesium alloys AZ31B, AZ80A,sand-cast magnesium alloys AM60B, AZ91D and die-cast magnesium alloys AM50A during laser welding are studied. The results show that wrought magnesium alloys are not prone to porosity and welds pore-free can be obtained in a wide range of welding parameters. Porosity in laser welds of sand-cast magnesium alloys is sensitive to gas shielding conditions and is very high under unsuitable gas shielding angle and flux. Low porosity welds can be o... |
| |
| Keywords: | porosity laser welding wrought magnesium alloys sand-cast magnesium alloys die-cast magnesium alloys |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
