Study of the Heat Exchange and Relaxation Conditions of Residual Stresses Due to Welding of Austenitic Stainless Steel

Hamza Djeloud, Mustafa Moussaoui, Rahmani Kouider, Awf Al-Kassir () and Juan Pablo Carrasco-Amador
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Hamza Djeloud: Laboratory of Development in Mechanics and Materials, Ziane Achour University of Djelfa, Djelfa 17000, Algeria
Mustafa Moussaoui: Laboratory of Development in Mechanics and Materials, Ziane Achour University of Djelfa, Djelfa 17000, Algeria
Rahmani Kouider: Research Laboratory Modeling Simulation and Optimization of Real Complex Systems, Djelfa 17000, Algeria
Awf Al-Kassir: Department of Mechanical, Energy and Materials Engineering, School of Industrial Engineering, University of Extremadura, Avenida de Elvas, s/n, 06006 Badajoz, Spain
Juan Pablo Carrasco-Amador: Department of Graphic Expression, School of Industrial Engineering, University of Extremadura, Avenida de Elvas, s/n, 06006 Badajoz, Spain

Energies, 2023, vol. 16, issue 7, 1-20

Abstract: The present study presents a numerical prediction of residual stresses (RS) using the single-pass tungsten inert gas (TIG) welding process for stainless steel plates and the two-pass TIG welding process for stainless steel pipes. The effect of heat exchange between welding material and the environment was studied. The work consists of two parts: The first one is based on the determination of the existence of residual stresses numerically using Cast3M software, which has been validated by literature results. The second part addresses the means envisaged to attenuate the amplitudes of these residual stresses by practical methods. Two parameters with significant influence on the residual stresses have been chosen: the welding bead thickness and the torch displacement speed. The finite element model used has been validated experimentally, and the results obtained for the residual stresses have been compared with those given by the numerical study. The results obtained were found to be in agreement with references results. In addition, the microstructural analysis of different areas after welding of the solder joint (base metal, heat-affected zone and solder zone) was carried out using optical microscopy analysis.

Keywords: residual stress; weld bead thickness; austenitic stainless steels 304; welding torch speed (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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