Article
Materials Science, Multidisciplinary
Z. L. Ni, Y. Liu, H. Li, Y. H. Wang, D. T. Cui, J. Peng, R. Z. Zhang, F. X. Ye
Summary: Increasing clamping pressure leads to higher bond density and decreased effective thickness, with greater plastic deformation near the welding interface on the Cu side. The Cu/Ni joint at 0.5 MPa clamping pressure shows evident mutual diffusion and nanoscale wave-like patterns in the interfacial area.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2021)
Article
Materials Science, Multidisciplinary
Li Zhou, Shan Liu, Jie Min, Zhi-Wei Qin, Wen-Xiong He, Xiao-Guo Song, Hong-Bo Xu, Ji-Cai Feng
Summary: A good Al-Ti joint can only be achieved with proper welding energy, and no significant intermetallic compound (IMC) was found under all conditions. The heat input is crucial for material plastic flow and bonding area, playing an important role in joint formation.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Mingfeng Li, Wu Tao, Jiazhi Zhang, Yanjun Wang, Shanglu Yang
Summary: This work proposes an innovative hybrid resistance spot-laser welding process for joining aluminum to steel. The process first conducts resistance spot welding of aluminum and steel and then follows with laser spot welding. Through innovative electrode structure design, the welding current distribution and weld structure are optimized to achieve a thin and uniform intermetallic layer. The process also changes the faying interface morphology and improves the tensile-shear load and energy absorption of the joints.
MATERIALS & DESIGN
(2022)
Article
Automation & Control Systems
Brajesh Asati, Nikhil Shajan, V. T. Akhil Kishore, Kanwer Singh Arora, R. Ganesh Narayanan
Summary: This study compares the joinability of different galvanized steels through self-piercing riveting (SPR) and resistance spot welding (RSW), and performs static and dynamic testing on the joints. The results show that SPR joints have significantly improved fatigue life, while RSW joints have higher tensile-shear strength. The failure modes of the two types of joints are also different.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Karrar Mahdi Hussein, Habibullah Akbari, Rassoul Noorossana, Rostam Yadegari, Rouholah Ashiri
Summary: Resistance spot welding is commonly used for autobody structure assembly. Advanced high-strength steels, such as Q&P980 steel, have been developed to meet the demands of lighter and stronger autobody. This study investigated the effect of welding parameters on the mechanical performance of dissimilar combination of Q&P980 steel and SPFC780Y high strength steel. The research found that adjusting welding current, welding time, electrode pressure, and holding time can optimize the peak load and energy absorption.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Civil
Pankaj Kaushik, Dheerendra Kumar Dwivedi
Summary: The present study focuses on the seam lap joining of Al6061 and galvanized steel sheet using friction stir welding. The analysis reveals the existence of a unique metallographic feature called "hook" near the boundary of the stir zone in the weld nugget. The study discusses the influence of hooks and related stress zones on joint fracture. Three different types of fracture are observed during tensile shear testing, and the mechanisms of these fractures are comprehensively understood. Additionally, a correlation between the sizes of hooks and the type of fracture is presented.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Jiang Yu, Hongtao Zhang, Bo Wang, Chong Gao, Zhichao Sun, Peng He
Summary: Dissimilar metal joining between Q235 mild steel and TC4 titanium alloy was successfully achieved using resistance welding with interlayer, which resulted in welded joints with higher strength compared to conventional resistance spot welding. No apparent welding defects were observed in the welded joints.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Xiaopei Wang, Yoshiaki Morisada, Hidetoshi Fujii
Summary: In this study, dissimilar welding of AZ31/ZK60 magnesium alloys was successfully achieved using double-sided friction stir spot welding with adjustable probes, resulting in a strong joint with improved properties.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Suraj Gupta, Sukanta Das, R. Ganesh Narayanan, Brajesh Asati
Summary: This study proposes a friction stir spot welding using a consumable sheet (FSSW-C) method for joining galvanized steel sheets. The results show that FSSW-C successfully spot welded galvanized steel sheets with a lap shear fracture load of approximately 50% of that of Self Pierce Rivet (SPR) joints. Microstructural analysis reveals different zones without intermetallic compound formation at the joint interface. Moreover, the axial force and torque decrease while temperature and energy generation increase with an increase in rotational speed during FSSW-C.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Qiaoling Chu, Yi Li, Qilu Cao, Min Zhang, Pengkang Zhao, Fuxue Yan, Hailong Luo, Xudong Wang, Cheng Yan
Summary: Different groove types and transition fillers were used to butt join explosion-welded Cu/steel bimetallic plate. Defect-free welded joints and high tensile strength were achieved by optimizing the groove design and welding sequence.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2022)
Article
Materials Science, Multidisciplinary
Mingfeng Li, Shanglu Yang, Yanjun Wang, Wu Tao
Summary: Reliably welding aluminum to steel is crucial in the automotive industry to achieve lightweight body structures. The proposed resistance spot welding process successfully joins AA6016 aluminum alloy and press hardened steel, forming an effective joint between the two materials.
Article
Engineering, Manufacturing
Jinpeng Hu, Fujun Cao, Yifu Shen, Chan Guo, Zhiyuan Yang
Summary: This study investigates the influence of different welding parameters on the microstructure and properties of dissimilar galvanized steel (GS) and mild steel Q235 friction stir welding joint. The experimental results show that a welding parameter of 800 rpm leads to a high tensile strength of 447.83 MPa, which is 104.15% of the base material, and an elongation of 17.2%, indicating good strength and toughness. EBSD results confirm the absence of zinc composition in the joints obtained after FSW, proving the effectiveness of milling properties. Temperature measurements during the FSW process demonstrate that the surface temperature remains below the boiling point of zinc, providing better protection of the galvanized layer.
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2023)
Article
Automation & Control Systems
Fatih Ozen, Salim Aslanlar
Summary: The research found that under high heat input, there were many shrinkage gaps and voids induced by high Mn content in the fusion zone of TWIP steel. The segregation behavior of (Mn, Fe)xC in the heat-affected zone was consistent with the behavior of TWIP material. Segregation adversely affected the heat-affected zone and limited the tensile-shear force bearing capacity.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
V. R. Ferrari, F. G. Coury, U. F. H. Suhuddin, N. G. Alcantara, J. F. dos Santos, R. Ohashi, M. Fujimoto, G. Y. Koga
Summary: Refill FSSW was analyzed in this study through a multi-scale analysis, focusing on the performance and microstructure of dissimilar joints. The results showcased the potential of producing high-strength joints with optimized process parameters, where the bake-hardening process had a significant influence. Load-controlled Refill FSSW could be a desirable technique for applications in the automotive industry.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Chemistry, Physical
Nkopane Angelina Ramaphoko, Samuel Skhosane, Nthabiseng Maledi
Summary: This paper presents the laser beam welding process of a lap joint between galvanized steel and an aluminum alloy. The study examines the effects of various laser welding parameters on the microstructure and mechanical properties of the welded joints. The results show the presence of intermetallic phases and inadequate fusion at different heat inputs.