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Parametric study of two-stage refilled friction stir spot welding
Journal of Manufacturing Processes, 2016Abstract Two-stage refilled friction stir spot welding (TFSSW) is a novel refilling process, based on conventional FSSW. This process is done in two steps and with two independent tools, conventional and refilling tool. In this paper, TFSSW is studied, using Al 1100 sheets which were 2 mm in thickness, to evaluate effect of welding parameters on ...
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Fracture mechanism of refill friction stir spot-welded 2024-T4 aluminum alloy
The International Journal of Advanced Manufacturing Technology, 2016Refill friction stir spot welding (RFSSW) was applied to weld 2024-T4 aluminum alloy and effects of welding parameters on the fracture mechanisms of RFSSW tensile-shear specimens were investigated. Fracture modes are mainly determined by the bonding strengths of the lap interface and the stir zone (SZ)/thermomechanically affected zone (TMAZ) interface,
Zhengwei Li +5 more
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Science and Technology of Welding and Joining, 2021
Magnesium-lithium alloys are among the lightest commercially-available structural alloys. However, the reactive nature of Mg and Li makes fusion welding of this family of alloys very difficult, if ...
Chengcong Zhang +2 more
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Magnesium-lithium alloys are among the lightest commercially-available structural alloys. However, the reactive nature of Mg and Li makes fusion welding of this family of alloys very difficult, if ...
Chengcong Zhang +2 more
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Comparison of Properties on Withdrawing and Refill Friction Stir Spot Welding Joints
Applied Mechanics and Materials, 2014The 2 mm sheet of 6082 - T6 aluminum alloy was carried to develop refill friction stir welding and withdrawing friction stir spot welding,the forming of solder joints , the cross-sectional microstructure and fracture morphology of welding joints were observed and analyzed, the cross-sectional microhardness of welding joints were tested.
Xi Jing Wang +3 more
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Experimental Investigation on Refill Friction Stir Spot Welding Process of Aluminum Alloys
Applied Mechanics and Materials, 2013With the growing demand for lightweight reduction and environment protection, lightweight materials like aluminum and magnesium alloys have been widely applied in the automotive and aerospace industry. Being a solid state welding process, refill friction stir spot welding (RFSSW) is suitable for spot joining lightweight metals.
Hong Gang Yang, Hai Jun Yang
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Refilling of Pinhole in Friction Stir Spot Welding Using Waste Chips
2019Friction stir welding (FSW) is considered as a sustainable and green alternative to conventional welding techniques. However, the pinhole left after welding is one of the major defects. This study discusses a novel technique of refilling the pinhole, left after conventional friction stir spot welding (FSSW) of aluminium alloy AA6082 overlapping sheets,
N. Bhardwaj +2 more
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Reducing Cycle Times of Refill Friction Stir Spot Welding in Automotive Aluminum Alloys
SAE Technical Paper Series, 2020<div class="section abstract"><div class="htmlview paragraph">A major barrier, preventing RFSSW from use by manufacturers, is the long cycle time that has been historically associated with making a weld. In order for RFSSW to become a readily implementable welding solution, cycle times must be reduced to an acceptable level, similar to that
Brigham Larsen, Yuri Hovanski
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Advanced Materials Research, 2014
The main objective of the current work was to produce sound Refill FSSW joints between AA6181-T4 aluminum and DP600 steel plates. The steel plates were used in two different surface conditions: with and without galvanized surface layer. The Taguchi statistical method was used to find out the set of parameters indicated to produce joint with higher ...
Roger Navarro Verastegui +4 more
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The main objective of the current work was to produce sound Refill FSSW joints between AA6181-T4 aluminum and DP600 steel plates. The steel plates were used in two different surface conditions: with and without galvanized surface layer. The Taguchi statistical method was used to find out the set of parameters indicated to produce joint with higher ...
Roger Navarro Verastegui +4 more
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Refill friction stir spot welding of dissimilar aluminum alloy and AlSi coated steel
Journal of Manufacturing Processes, 2017Abstract AA5754 Al alloy and coated steel were successfully joined by refill friction stir spot welding through the eutectic Al-Si coating. The overlap shear strength increased with plunge depth and reached a high strength plateau which was attributed to maximum bonding size and strong Al/AlSi coating joint interface.
Y. Ding, Z. Shen, A.P. Gerlich
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Journal of Manufacturing Processes, 2018
Abstract Geometrical features such as stir zone area, hook and bonding ligament of refill friction spot welds produced from AA2198 3.2 mm-thick sheets were analyzed along with their lap shear strength (LSS) and failure mode. Macro and micrographs of weld cross-sections were analyzed using optical microscopy for the understanding of microstructure ...
Camila Caroline de Castro +4 more
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Abstract Geometrical features such as stir zone area, hook and bonding ligament of refill friction spot welds produced from AA2198 3.2 mm-thick sheets were analyzed along with their lap shear strength (LSS) and failure mode. Macro and micrographs of weld cross-sections were analyzed using optical microscopy for the understanding of microstructure ...
Camila Caroline de Castro +4 more
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