Study of the welding conditions during similar and dissimilar aluminium and copper welding based on torque sensitivity analysis |
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| Affiliation: | 1. ICube laboratory (Université de Strasbourg and CNRS), 23 rue du Loess BP 20 CR, 67037 Strasbourg Cedex 2, France;2. Université de Lorraine, UMR CNRS 7198, Institut Jean Lamour, BP 70239, F-54506 Vandoeuvre-Lès-Nancy, France;3. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS, University of Strasbourg (UDS), 23 rue du Loess, F-67034 Strasbourg Cedex 2, France;1. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, 710072, China;2. State Key Laboratory of Solidification, Xi’an, 710072, China;3. Shaanxi Key Laboratory of Friction Welding Technologies, Xi’an, 710072, China;1. MOE Key Lab for Liquid-Solid Structure Evolution and Materials Processing, and Institute of Materials Joining, Shandong University, Jinan 250061, China;2. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;1. Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602, USA;2. Manufacturing Engineering Technology, Brigham Young University, Provo, UT 84602, USA |
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| Abstract: | The aim of present study was to analyse and compare the influence of the welding conditions on torque evolution, during similar and dissimilar friction stir butt welding of 5083-H111 aluminium alloy and copper-DHP. The torque registered during welding, using different welding parameters and base materials combinations, and its relation with the morphological and structural properties of the welds were analysed. Independently of the materials to be welded and the relative plates positioning, in dissimilar friction stir welding, the sensitivity of the average torque to the process parameters was observed to be the same. It was also observed that the average torque is strongly conditioned by the materials to be welded, since, for all welding parameters, the lowest average torque values were always registered during dissimilar welding. Material flow and intermetallic-formation were found to determine this behaviour. Important differences in instantaneous torque evolution, during welding, were also observed depending on base materials combinations. |
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