摘要
以6061/7075异种铝合金为研究对象进行回填式搅拌摩擦点焊试验,研究了板材相对位置对接头成形和性能的影响。试验结果表明,当7075铝合金作为上板时,套筒最大下扎深度处和焊点中心处均会产生孔洞缺陷;当6061铝合金作上板时,可获得无缺陷的接头且上下板的冶金结合效果明显较好,其接头的最大拉断载荷为11502 N。
Using 6061 and 7075 aluminum alloys as the research objects, the refill friction stir spot welding（RFSSW） was performed. The effect of relative position of sheet on the formation and performance of the joint was discussed. The test results show that when 7075 aluminum is used alloy as the upper sheet, void defects can be observed at the maximum plunge depth region of the sleeve and the joint center. The defect-free joint can be obtained when 6061 Al is used as the upper sheet and it has better metallurgical bonding of the lower and upper sheets, and the maximum lap shear failure load of the joint is 11502 N.
作者
石瑶
张利国
吕赞
肖增华
SHI Yao;ZHANG Liguo;LYU Zan;XIAO Zenghua(Faculty of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China;China GT Engineering and Associates Co.,Ltd.,Hongkong 999077,China)
出处
《热加工工艺》
CSCD
北大核心
2018年第17期170-172,共3页
Hot Working Technology
基金
国家自然科学基金资助项目(51705339)
关键词
异种合金
回填式搅拌摩擦点焊
显微组织
拉断载荷
dissimilar alloys
refill friction stir spot welding
microstructure
lap shear failure load
