Article
Automation & Control Systems
Tinu P. Saju, R. Ganesh Narayanan, Barnik Saha Roy
Summary: The study investigated the use of dieless friction stir riveting on dissimilar grades of aluminum alloy sheets, finding that single-hole configurations perform better than multi-hole configurations in terms of mechanical properties. The research also examined the fracture modes and microstructural changes related to this difference in performance.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Mohamed M. Z. Ahmed, Mohamed M. El-Sayed Seleman, Essam Ahmed, Kamel Touileb, Ibrahim Albaijan
Summary: Friction stir spot welding is an important variant of the friction stir welding process, particularly for spot welding different thickness sheets in automotive applications. In this study, thin sheets of AA6082-T6 with different thicknesses (1 mm and 2 mm) were successfully welded using FSSW at various rotation speeds. Macro- and microstructural investigations, hardness tests, and tensile shear tests were conducted to evaluate the quality and mechanical properties of the FSSW joints. The results showed that defect-free spot joints can be achieved within a wide range of rotation speeds (400-1000 rpm), and the best welding condition was found to be 600 rpm for achieving different thin sheet thicknesses spot joints with desirable properties.
Article
Engineering, Mechanical
Umesh Kumar Singh, Avanish Kumar Dubey
Summary: This research focuses on investigating the joining performance of AZ91 and AZ31 using friction stir welding setup, showing the highest microhardness value of 95.92 Hv within the welded zone. The maximum tensile strength of the welded sample was 85.09% of AZ31, with all samples breaking from the advancing side near the weld centre line.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2021)
Article
Automation & Control Systems
Wali Muhammad, Wilayat Husain, Anjum Tauqir, Abdul Wadood, Hamid Zaigham, Muhammad Atiq Ur Rehman
Summary: The study demonstrates that the temper conditions of the base metal have a strong influence on the microstructural morphologies and mechanical behavior of the welded joints. Differences in hardness and fracture locations were observed in the two temper conditions, with all samples fracturing at the retreating side. Scanning electron microscopy fractographic analysis revealed a ductile fracture mode with dimples, the size and shape of which depended on the base metal temper condition.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Miguel A. R. Pereira, Ivan Galvao, Jose Domingos Costa, Rui M. Leal, Ana M. Amaro
Summary: In this study, 6 mm-thick polyethylene plates were butt-welded using friction stir welding with a non-conventional stationary shoulder tool. Shoulder heating was crucial for optimizing PE joints, leading to improved joint efficiency and reduced defects. Higher rotational speeds and lower welding speeds resulted in defect-free weld seams.
Article
Engineering, Chemical
M. D. Sameer, Anil Kumar Birru
Summary: This study investigated the mechanical and microstructural properties of friction stir welded similar DP600 steel, showing variations in tensile strength and hardness of weld samples at different rotational speeds. Microstructural characterization and fractographic analysis were conducted for further analysis.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Suresh Gain, Suman Kalyan Das, Dipankar Sanyal, Sanjib Kumar Acharyya
Summary: This study assesses the application of friction stir welding (FSW) for joining 316L stainless steel industrial grade pipes. The chosen welding parameters have significant influence on the metallurgical and mechanical properties of the welded joints, and the weld zone at the optimal combination of parameters exhibits higher tensile strength than the base metal.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Chemistry, Physical
Janusz Torzewski, Magdalena Lazinska, Krzysztof Grzelak, Ireneusz Szachogluchowicz, Janusz Mierzynski
Summary: The present paper analyzes the influence of process parameters on the macrostructure, microhardness, and mechanical properties of dissimilar friction stir welded butt joints. Various combinations of tool traverse speed and tool rotational speed were characterized and tested to determine the best strength properties.
Article
Chemistry, Multidisciplinary
Miguel A. R. Pereira, Ivan Galvao, Jose Domingos Costa, Ana M. Amaro, Rui M. Leal
Summary: The objective of this paper is to demonstrate the potential of friction stir welding and its variants in joining fiber-reinforced thermoplastic polymer composites. The influence of welding parameters and methods to reduce defects are discussed.
APPLIED SCIENCES-BASEL
(2022)
Correction
Metallurgy & Metallurgical Engineering
Bin He, Lei Cui, Dong-Po Wang, Hui-Jun Li, Chen-Xi Liu
Summary: The authors apologize for any inconvenience caused.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Kun Gao, Soumyabrata Basak, Mounarik Mondal, Shengwei Zhang, Sung-Tae Hong, Stephen Yeboah Chooakye, Hoon-Hwe Cho
Summary: The microstructure, tensile properties, and fatigue behavior of friction stir welding joints of multilayer AA3003-clad AA6013 were experimentally investigated. The results showed grain refinement, precipitate refinement, zigzag line, and AA3003-clad layer fragments in the stir zone due to material mixing. Tensile tests revealed a significant increase in tensile strength in the stir zone compared to the base metal, while cross-weld joints exhibited typical ductile fractures in the base metal. Fatigue tests demonstrated that all cross-weld joints fractured from the stir zone.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Zhikang Shen, Yuquan Ding, Wei Guo, Wentao Hou, Xiaochao Liu, Haiyan Chen, Fenjun Liu, Wenya Li, Adrian Gerlich
Summary: Refill friction stir spot welding (refill FSSW) has been shown to significantly improve weld strength in Al alloy to copper joints, with two types of continuous and ultra-thin intermetallic compounds (IMCs) layers identified at the interface. The peak temperature reached 591 degrees C, with evidence of melting and resolidification observed, showing the potential for industrial applications.
CHINESE JOURNAL OF MECHANICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Zhe Liu, Zhiyu Fan, Li Liu, Shu Miao, Zhicheng Lin, Chungui Wang, Yunqiang Zhao, Renlong Xin, Chunlin Dong
Summary: In this study, 1 mm-thick AZ31 magnesium alloy sheets were joined by refill friction stir spot welding. The metallurgical features, microstructure, texture, and mechanical response of the spot-welded joints were investigated, and the effect of welding parameters on joint performance was evaluated. The results showed that the highest lap shear strength was achieved with a rotational speed of 1500 rpm and a plunge depth of 1.4 mm. A fine-grain structure was observed in the stir zone, and the grain size decreased with lower rotational speed and plunge depth. Furthermore, strain localization was observed during tensile deformation in the spot weld, and the mechanism behind this phenomenon was discussed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yuexin Zhou, Hanqing Xiong, Yun Zhang, Charlie Kong, Hailiang Yu
Summary: High-speed underwater friction stir welding (UFSW) was used to weld cryo-and warm-rolled ultrafine-grained AA2024 aluminum alloy sheets composed of high-density nano metastable phase S ' and conventional coarse-grained AA2024-T4 ultra-thin sheets composed of high-density GPB zones. The microstructure of the welded joints was characterized using various techniques, and the results showed that substituting the advancing side (AS) with ultrafine-grained material significantly improved the strength and plasticity of the joint, providing a promising method for low-cost and high-strength connection of aluminum sheets.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Ronghao Han, Youchao Chen, Daxin Ren, Gang Song
Summary: This study proposed an enhanced friction stir welding (FSW) technique for achieving unequal-thickness welding. By employing a 1 + 2 butt joint structure, the direct force exertion of the shoulder on the thinner plate is prevented, eliminating plate thinning. The optimized parameters resulted in a tensile strength of 86.56% of the base material (BM). The microhardness profile showed an asymmetrical w shape, with the weld nugget zone (WNZ) having the highest hardness value and the heat-affected zone (HAZ) having the lowest hardness value.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
