Lap-Shear Performance of Weld-Bonded Mg Alloy and Austenitic Stainless Steel in Three-Sheet Stack-Up

作     者：Sunusi Marwana Manladan Mukhtar Fatihu Hamza Singh Ramesh Zhen Luo Sunusi Marwana Manladan;Mukhtar Fatihu Hamza;Singh Ramesh;Zhen Luo

作者机构：School of Materials Science and EngineeringTianjin UniversityTianjin 300350China Department of Mechanical EngineeringFaculty of EngineeringBayero UniversityKano 3011Nigeria Department of Mechanical EngineeringCollege of EngineeringPrince Sattam bin Abdulaziz University11942 AlkharjSaudi Arabia Department of Mechanical EngineeringFaculty of EngineeringUniversity of Malaya50603 Kuala LumpurMalaysia 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2024年第37卷第4期

页      面：342-353页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Supported by National Natural Science Foundation of China (Grant No.52075378) Prince Sattam Bin Abdulaziz University of Saudi Arabia (Grant No.PSAU/2024/R/1445) 

主　　题：Weld-bonding Resistance spot welding Austenitic stainless steel Mg alloy Failure mode 

摘      要：With the growing interest in utilizing Mg and austenitic stainless steel(ASS)in the automotive sector,joining them together in three-sheet configuration is ***,achieving this task presents considerable challenges due to the large differences in their physical,metallurgical and mechanical *** overcome these challenges,the feasibility of using weld-bonding to join Mg alloy/ASS/ASS was *** nugget formation,interface characteristics,microstructure and mechanical properties of the joints were *** results show that the connection between the Mg alloy and upper ASS was achieved through the combined effect of the cured adhesive and weld-brazing in the weld *** the other hand,a metallurgical bond was formed at the ASS/ASS *** Mg nugget microstructure exhibited fine columar grains composed predominantly of primaryα-Mg grains along with a eutectic mixture ofα-Mg andβ-*** nugget formed at the ASS/ASS interface consisted largely of columnar grains of austenite,with some equiaxed dendritic grains formed at the centerline of the *** weld-bonded joints exhibited an average peak load and energy absorption of about 8.5 kN and 17 J,respectively(the conventional RSW joints failed with minimal or no load application).The failure mode of the joints changed with increasing welding current from interfacial failure via the Mg nugget/upper ASS interface to partial interfacial failure(part of the Mg nugget was pulled out of the Mg sheet).Both failure modes were accompanied by cohesive failure in the adhesive zone.