alexa Study of Weld Quality Characteristics of Inconel 625 Sh

Research & Reviews: Journal of Material Sciences
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Research Article

Study of Weld Quality Characteristics of Inconel 625 Sheets at Different Modes of Current in Micro Plasma Arc Welding Process

Kondapalli Siva Prasad1*, Chalamalasetti Srinivasa Rao2, and Damera Nageswara Rao3

1Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences, Visakhapatnam, India.

2Department of Mechanical Engineering, AU College of Engineering, Andhra University, Visakhapatnam, India.

3Vice Chancellor, Centurion University of Technology & Management, Odisha, India.

Corresponding Author:
Kondapalli Siva Prasad
Department of Mechanical Engineering
Anil Neerukonda Institute of Technology & Sciences
Visakhapatnam, India.

Received: 20/03/2013; Revised: 14/04/2013; Accepted: 14/06/2013



Inconel 625 is a Nickel alloy which was used in fabrication of high temperature resistance and corrosion resistance components, such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industry. The paper focuses on studying the effect of continuous current and pulsed current in welding Inconel 625 sheets using Micro Plasma Arc Welding (MPAW) process. Welding was carried out on 0.25 mm thick Inconel 625 sheets using continuous current mode and pulsed current mode separately keeping all other welding parameters constant. Weld quality characteristics like bead profile, micro structure, hardness and tensile properties are investigated and it is found that the usage of pulsed current leads to better weld quality characteristics when compared to continuous current mode


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