Affiliation:
1. Anna University - BIT Campus Tiruchirappalli: Anna University - Regional Office Tiruchirappalli
2. Chennai CIT: Chennai Institute of Technology
Abstract
Abstract
The present paper focuses on the effect of alternating shielding gases and post weld heat treatment on tensile properties and porosity of GMA welded AA6061 joints. These properties of weld joints will be greatly influenced by microstructure and hardness of the welded joints. Hence, in this investigation tensile strength, porosity, microstructure and micro hardness measurements were carried out on the cross section of weldments. Investigations were conducted utilizing the Universal Testing Machine, Vickers Micro Hardness Tester, X-ray radiography, Optical Microscope, Scanning Electron Microscope (SEM), and X-ray Diffraction (XRD). Hence, in this research, a complete analysis has been carried out to understand the influence of shielding gases and post weld heat treatment on mechanical and metallurgical behavior of GMA welded joints of AA6061aluminium alloy. It was represented in this research; tensile strength of post heat treatment welded aluminum alloy was increased by 44.9% than non post treatment of welded joints. Also, the micro hardness has been greatly improved post weld heat treatment in AA6061 alloy specimens. It was evident from the micro structures and fractography analysis of the AA6061 alloy components.
Publisher
Research Square Platform LLC
Reference38 articles.
1. Joint strength and failure studies of dissimilar AA6061-AA7075 friction stir welds: Effects of tool pin, process parameters and preheating;Raturi M;Eng Fail Anal,2019
2. Microstructural and mechanical characteristics of 308L stainless steel manufactured by gas metal arc welding-based additive manufacturing;Le VT;Mater Lett,2020
3. Mathers G (2002) The welding of aluminium and its alloys. Woodhead Publishing Series in Welding and Other Joining Technologies, 1st edn. Woodhead Publishing, pp 116–146
4. Moinuddin SQ, Hameed SS, Dewangan AK, Kumar R, K., Kumari S (2021) A. A study on weld defects classification in gas metal arc welding process using machine learning techniques. Materials Today: Proceedings, 43:623–628. https://doi.org/10.1016/j.matpr.2020.12.159
5. Investigation on effects of parameters of GMAW process on bead geometry, hardness and microstructure of AISI 410 steel weldments;Adv Mater Process Technol,2021