Microstructure and Properties of Laser Welded Aluminum-lithium Alloy 5A90 in Lapped Joints
摘 要
以厚度为3.0 和4.0 mm的5A90铝锂合金板为研究对象, 系统地开展了铝锂合金双光点激光焊接工艺研究,并对激光焊搭接接头的组织和性能进行了分析。结果表明: 通过合理的选择激光功率和焊接速度可保证焊接过程的稳定性,改善焊缝的成形质量;在母材半熔化区与焊缝柱状晶之间存在一条等轴细晶带,焊缝中心组织为等轴树枝晶,晶粒尺寸一般随激光功率的降低和焊接速度的增大而细化和均匀化。
Abstract
The dual-spot laser welding technics for 3.0 and 4.0 mm thick 5A90 aluminum-lithium alloy was researched. Microstructure and properties of lapped joints was also analyzed. The results showed that reasonable adjusting the laser power and welding velocity could enhance the stability and improve the weld shape during dual-spot laser welding.There was the equiaxed grain-refining zone between the partially melted zone of base metal and columnar crystal in weld. Microstructure in weld center was equiaxed dendrite, the grain size was refined and uniform with the decrease of laser power and the increase of welding velocity.
中图分类号 TG407
所属栏目 试验与研究
基金项目
收稿日期 2009/10/26
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备注张庆云(1981-),女,工程师,硕士。
引用该论文: ZHANG Qing-yun,CHEN Li,LU Ye-hang,GONG Shui-li. Microstructure and Properties of Laser Welded Aluminum-lithium Alloy 5A90 in Lapped Joints[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2010, 46(5): 292~295
张庆云,陈 俐,陆业航,巩水利. 5A90铝锂合金激光焊搭接接头的组织和性能[J]. 理化检验-物理分册, 2010, 46(5): 292~295
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参考文献
【1】王小玉,刘爱国,张修智. 2091铝锂合金焊接接头的热处理强化[J]. 焊接学报, 1995,16(4): 222-225.
【2】邓继维,李艳,张文扬,等. 气孔对1420 铝锂合金焊接接头力学性能的影响[J].材料工程,1998(11): 24-27.
【3】肖荣诗,左铁钏,GNTER Ambrosy,等. 电流强化铝合金CO2激光焊接[J]. 中国激光, 2004,31(3): 359-362.
【4】张赵林,程兆谷,雒江涛,等. 激光焊接铝合金的研究[J]. 中国激光,1998,A25(5): 477-480.
【2】邓继维,李艳,张文扬,等. 气孔对1420 铝锂合金焊接接头力学性能的影响[J].材料工程,1998(11): 24-27.
【3】肖荣诗,左铁钏,GNTER Ambrosy,等. 电流强化铝合金CO2激光焊接[J]. 中国激光, 2004,31(3): 359-362.
【4】张赵林,程兆谷,雒江涛,等. 激光焊接铝合金的研究[J]. 中国激光,1998,A25(5): 477-480.
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