%0 Journal Article %T 摆动焊接对异种热处理状态2219铝合金焊接接头性能的影响 %T Effect of Weaving Welding on Properties of Dissimilar Heat Treated 2219 Aluminum Alloy Welded Joint %A 蒙丹阳 %A 王惠苗 %A 丁吉坤 %A 张登魁 %A 刘 飞 %A MENG,Danyang %A WANG,Huimiao %A DING,Jikun %A ZHANG,Dengkui %A LIU,Fei %J 宇航材料工艺 %J Aerospace Materials & Technology %@ 1007-2330 %V %N %D %P - %K 2219铝合金;异种热处理状态;钨极氩弧焊;力学性能 %K 2219 aluminum alloy;Dissimilar heat treatment;Tungsten inert gas arc welding;Mechanical properties %X 针对2219异种热处理状态C10S+CYS铝合金进行钨极氩弧焊接试验,对比研究了常规焊接与摆动焊接接头的力学性能、微观组织、硬度分布等。分析结果表明,相较常规接头,采用摆动焊接工艺的接头其力学性能有所提高,同时接头中下部PMZ、OAZ的硬度有所下降,宽度范围有所增加。应变分布结果表明,断裂前常规接头最大应变沿对角线分布,而摆动接头呈近似W型分布;对微观组织及断口观察可知,摆动接头CYS侧的PMZ、OAZ中连续第二相的数量及尺寸有所降低,接头呈韧性为主的混合型断裂特征。 %X The effect of weaving welding on the joint of a 2219 aluminum alloy with dissimilar heat treatment, C10S+CYS, was investigated. Comparison was made with the conventional tungsten inert gas arc welding, focusing on the mechanical properties, microstructures and hardness distribution of the joints. Analysis exhibits that the weaving-welding improves the mechanical properties of the joint compared with the conventional welding. Meanwhile, the hardness of the joint in the middle and lower region of the partially-melted zone (PMZ) and over-aged zone (OAZ) decreases and the width range increases. The strain distribution before the onset of the fracture at the joint shows a W-shape pattern when the joint is weaving welded. In contrast, the peak strain is along the diagonal direction for a conventionally welded joint. Microscopic observation of the fracture reveals that weaving welding led to a reduction in the amount and size of the second continuous phase in the partially-melted zone (PMZ) and over-aged zone (OAZ), in the CYS side of the joint, and that fracture is caused by a ductile-rupture-dominated mixed fracture mode %R 10.12044/j.issn.1007-2330.2021.02.010 %U http://www.yhclgy.com/yhclgy/home %1 JIS Version 3.0.0