ISSN: 2349-5162

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Published in:

Volume 3 Issue 8
August-2016
eISSN: 2349-5162

Unique Identifier

JETIR1608020

Page Number

75-82

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Title

Influence of Welding Processes on the Exposure of Duplex Stainless Steel Alloy 2205 Using Gas Tungsten Arc Welding and Gas Manual Arc Welding.

ISSN

2349-5162

Cite This Article

"Influence of Welding Processes on the Exposure of Duplex Stainless Steel Alloy 2205 Using Gas Tungsten Arc Welding and Gas Manual Arc Welding.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.3, Issue 8, page no.75-82, August-2016, Available :http://www.jetir.org/papers/JETIR1608020.pdf

Abstract

In this work, an investigation on the influences of welding processes on the exposure of Duplex stainless steel (DSS) Alloy 2205 using Gas Tungsten Arc Welding and Gas Manual Arc Welding was carried out. The Duplex stainless steel (DSS) Alloy 2205 containing 22%Cr, 5%Ni, ferritic-austenitic material is an emerging class of stainless steel currently being selected for a variety of applications especially where corrosion is of major concern. It have good mechanical properties and high resistance to all forms of corrosion combined with its high strength-to-mass ratio. These properties allow for savings both in terms of structural weight and maintenance costs. In this work, the Gas Tungsten Arc (GTAW) and the Shielded Metal Arc (SMAW) welding processes were used to weld a 200mm x 16.53mm thick duplex alloy 2205 stainless steel pipe to determine which of the processes will cause susceptibility of the alloy to intergranular corrosion at the grain boundaries. Various tests were carried out on transverse specimens cut out from the welds made with both processes. These tests included metallurgical, compositional analysis across the weld profiles, hardness, and tensile test. The test results for the compositional analysis showed an insignificant depletion of chromium from 22.06 at the weld cap to 19.96 at the root of the TIG weld. This depletion is not enough to cause sensitization although there were likely precipitates in the weld and HAZ from the Microstructural analysis. The hardness across the welds profile revealed that there was a uniform distribution of hardness across the MMA weldment when compared to the TIG weld which dropped drastically at the weld metal region from 337.2 and 328.7 to 256.5 and 252.0 at the face and root respectively. The mechanical properties of both welds have not shown any major deviations from the standard Alloy SAF 2205 properties. They are within the acceptable range. The test results obtained indicated that with proper control and monitoring of the welding parameters, the SMAW can be effectively used to weld the Alloy 2205 with comparable high quality of properties.

Key Words

Stainless, Gas tungsten arc welding, duplex stainless steel, Gas manual arc welding

Cite This Article

"Influence of Welding Processes on the Exposure of Duplex Stainless Steel Alloy 2205 Using Gas Tungsten Arc Welding and Gas Manual Arc Welding.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.3, Issue 8, page no. pp75-82, August-2016, Available at : http://www.jetir.org/papers/JETIR1608020.pdf

Publication Details

Published Paper ID: JETIR1608020
Registration ID: 160374
Published In: Volume 3 | Issue 8 | Year August-2016
DOI (Digital Object Identifier):
Page No: 75-82
ISSN Number: 2349-5162

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Cite This Article

"Influence of Welding Processes on the Exposure of Duplex Stainless Steel Alloy 2205 Using Gas Tungsten Arc Welding and Gas Manual Arc Welding.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.3, Issue 8, page no. pp75-82, August-2016, Available at : http://www.jetir.org/papers/JETIR1608020.pdf




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