摘要
以1060铝合金为母材,针对超声波焊接成型的0.5 mm铝箔片材以及2.0 mm厚铝板激光穿透焊形成的焊接接头,分别从焊缝外观形貌、焊缝金相、焊缝力学性能等方面研究了不同激光焊接工艺参数对焊缝的组织及力学性能的影响。结果表明:随着焊接热输入的增加,对应样品的焊缝形貌依次变得平整光滑,且熔深、熔宽依次增大;穿透焊形成的接头焊缝中心处和热影响区呈现等轴晶组织,焊缝中部-熔合线附近呈现50~100μm的柱状晶,但是晶粒尺寸大于焊缝中心的晶粒尺寸;硬度测试表明,熔合线处硬度最低,焊缝中心区硬度整体低于母材区;剪切力测试表明,单参数样品剪切力分布相对较大,同时,随着接头焊缝熔深和熔宽的增加,并未出现对应焊接剪切强度的线性增加。
Taking 1060 aluminum alloy as the base metal,the effects of different laser welding parameters on the microstructure and mechanical properties of the weld were studied from the weld appearance,weld metallography,weld mechanical properties and other aspects for the welded joints formed by ultrasonic welding of 0.5 mm aluminum foil sheet and 2.0 mm thick aluminum plate laser penetration welding.The results show that with the increase of welding heat input,the weld morphology of the corresponding samples becomes smooth in turn,and the penetration depth and width increase in turn.The weld center and heat affected zone of the joint formed by penetration welding show equiaxed crystal structure,and the weld center-near the fusion line shows 50~100 μm,but the grain size is larger than the grain size in the weld center.The hardness test shows that the hardness of the fusion line is the lowest,and the hardness of the weld center area is lower than that of the base metal area as a whole.The shear force test shows that the shear force distribution of the single parameter sample is relatively large,and there is no linear increase in the corresponding weld shear strength with the increase of the weld penetration depth and width.
作者
高秀峰
叶云
户芳
Gao Xiufeng;Ye Yun;Hu Fang(Shanxi Jinzhong Institute of Technology,Jinzhong Shanxi 030600)
出处
《山西冶金》
CAS
2023年第3期4-7,共4页
Shanxi Metallurgy
关键词
铝合金
穿透焊
热输入
aluminum alloy
penetration welding
heat input
