Effect of pin rotating speed on lap shear strength of stationary shoulder friction stir lap welded 6005A-T6 aluminum alloy  

作　　者：Liu Zhenlei Cui Hutao Ji Shude Xu Minqiang Li Zhengwei 刘震磊;崔祜涛;姬书得;徐敏强;李政玮(Deep Space Exploration Research Center,Harbin Institute of Technology;Faculty of Aerospace Engineering,Shenyang Aerospace University)

机构地区：[1]Deep Space Exploration Research Center, Harbin Institute of Technology, Harbin 150080 [2]Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136

出　　处：《China Welding》2016年第2期58-63,共6页中国焊接（英文版）

摘　　要：Stationary shoulder friction stir lap welding （SSFSLW） was successfully used to weld 6005A-T6 aluminum alloy in this paper. Effect of pin rotating speed on cross section morphologies and lap shear strength of the SSFSLW joints were mainly discussed. Results show that joints without flash and shoulder marks can be obtained by the stationary shoulder. Cross section of the SSFSLW joint presents a basin-like morphology and little material loss. By increasing the rotating speed from 1 000 rpm to 1 600 rpm, both effective sheet thickness and lap width increase, while lap shear failure load firstly decreases and then increases. The maximum failure load of 14. 05 kN /s attained when 1 000 rpm is used. All SSFSLW joints present shear fracture mode.Stationary shoulder friction stir lap welding （SSFSLW） was successfully used to weld 6005A-T6 aluminum alloy in this paper. Effect of pin rotating speed on cross section morphologies and lap shear strength of the SSFSLW joints were mainly discussed. Results show that joints without flash and shoulder marks can be obtained by the stationary shoulder. Cross section of the SSFSLW joint presents a basin-like morphology and little material loss. By increasing the rotating speed from 1 000 rpm to 1 600 rpm, both effective sheet thickness and lap width increase, while lap shear failure load firstly decreases and then increases. The maximum failure load of 14. 05 kN /s attained when 1 000 rpm is used. All SSFSLW joints present shear fracture mode.

关 键 词：friction stir lap welding stationary shoulder rotating speed lap shear failure load 

分 类 号：TG453.9[金属学及工艺—焊接]