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Study on Weld Quality Characteristics of Pulsed Current Micro Plasma Arc Welding of Inconel625 Sheets
Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences, Visakhapatnam, INDIA
Department of Mechanical Engineering, Andhra University, Visakhapatnam, INDIA
Vice Chancellor, Centurion University, Orissa, INDIA
- 1 Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences, Visakhapatnam, INDIA
- 2 Department of Mechanical Engineering, Andhra University, Visakhapatnam, INDIA
- 3 Vice Chancellor, Centurion University, Orissa, INDIA
Journal of Minerals and Materials Characterization and Engineering·Volume 11 (2012)·Pages 133–141·Published 20 February 2012·DOI10.4236/jmmce.2012.112010
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Abstract
Nickel alloys had gathered wide acceptance in the fabrication of components which require high temperature resistance and corrosion resistance, such as metallic bellows used in expansion joints used in aircraft, aerospace and petroleum industry. In the present paper an attempt is made to study various weld quality characteristics like weld bead geometry dimensions, micro hardness, microstructure, grain size and tensile properties of Pulsed Current Micro Plasma Welding of Inconel625sheets. Weld joint was prepared by fusing the two parent metals of Inconel625 sheets. Square butt joint is used and welding was carried out using Pulsed DCEN, without filler wire. Peak current, back current, pulse and pulse width are considered as the main influential input variables during the welding.
Keywordspulsed currentmicro plasma arc weldingInconel625weld bead geometryhardnessmicrostructuregrain size.
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