Microstructure and Mechanical Properties of Welded Joints of AA6061-T6 Alloy by Cold Metal Transfer Method
V. P. Srinivasan1, S. Balamurugan2, Abhilash Arulvalan3, B. Devaraj4, P. Mowyanivesh5, S. Mukesh6, C. Raghunandan7

1V.P.Srinivasan*, Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbarore, India.
2S.Balamurugan, Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbarore, India.
3Abhilash Arulvalan, Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbarore, India.
4B.Devaraj, Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbarore, India.
5P.Mowyanivesh, Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbarore, India.
6S.Mukesh, Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbarore, India.
7C.Raghunandan, Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbarore, India.
Manuscript received on March 15, 2020. | Revised Manuscript received on April 01, 2020. | Manuscript published on April 10, 2020. | PP: 577-581 | Volume-9 Issue-6, April 2020. | Retrieval Number: E2811039520/2020©BEIESP | DOI: 10.35940/ijitee.E2811.049620
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: CMT bonding process were done on the 2 plates of 5 mm thick AA6061-T6 alloy by means of ER 4043 wire-electrode of Φ1.2 mm as the filler metal. This study concentrates the impact of a PWHT on the micro-structural and mechanical characteristics of an AA6061-T6 alloy specimen bonded by means of GMAW and by CMT. The welded samples here separated as as-welded and PWHT samples. The ASTM standard E8M-04 was used for cutting all samples in order to get the tensile strength and to measure the bonded joint elongation. The hardness across the bonded joints was measured by using Vickers micro-hardness testing setup. Scanned electron microscopy (SEM) is employed to analyse failure pattern of tensile test performed specimens. 
Keywords: Microstructure, CMT welding, PWHT.
Scope of the Article: Welding Technology