Pinless FSSW of DP600/Zn/AA6061 dissimilar joints

被引：20
作者：
Alaeibehmand, Saleh [1 ]
Mirsalehi, Seyyed Ehsan [1 ]
Ranjbarnodeh, Eslam [1 ]
机构：
[1] Amirkabir Univ Technol AUT, Dept Mat & Met Engn, Tehran, Iran
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 15卷
关键词：
Pinless friction stir spot welding; Al-steel dissimilar joint; Zinc interlayer; Box-Behnken design; Lap shear test; WELDING PROCESS PARAMETERS; LOW-CARBON STEEL; ALUMINUM-ALLOY; LAP JOINTS; INTERMETALLIC COMPOUNDS; MECHANICAL-PROPERTIES; WELDED-JOINTS; FRICTION; OPTIMIZATION; STRENGTH;
D O I：
10.1016/j.jmrt.2021.08.071
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
AA6061 alloy sheets have been successfully spot-welded to dual-phase DP600 steel sheets with pinless friction stir spot welding method. The Box-Behnken design of experiments was implemented to arrange the tests. The individual and interaction effect of each process parameter on the lap-shear failure load of the joints was investigated. The maximum failure load of 4.4 kN was achieved at 1300 rpm rotational speed, 2000 kg axial force, and 10 s welding time. Microstructural features of the interfaces and phase evolution were studied by scanning electron microscope and X-ray diffraction, respectively. The bonding mechanisms at the joint interface are classified into two types: thick intermetallic layer (type I), and thin intermetallic layer with thick Zn-Al diffusion region (type II) in the aluminum/steel interface. (C) 2021 The Author(s). Published by Elsevier B.V.
引用
收藏
页码：996 / 1006
页数：11
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