Journal ArticleDOI
Analysis of Metallurgical and Mechanical Properties of Continuous and Pulsed Current Gas Tungsten Arc Welded Alloy C-276 with Duplex Stainless Steel
M. Manikandan,N. Arivazhagan,M. Arivarasu,K. Mageshkumar,Deva N. Rajan,B. Arul Murugan,P. Prasanth,S. Sukumar,R. Vimalanathan +8 more
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In this article, the microstructure and mechanical properties of alloy C-276 fabricated by continuous and pulsed current gas tungsten arc welding process and by employing ER2553 filler wire were investigated.Abstract:
The present work investigates the microstructure and mechanical properties of alloy C-276 fabricated by continuous and pulsed current gas tungsten arc welding process and by employing ER2553 filler wire. Optical and scanning electron microscopic analyses were carried out to study the microstructures of weldments produced. Energy dispersive X-ray spectroscopy (EDS) was performed to investigate the formation of secondary phases in the weldments. The results disclosed that pulsed current gas tungsten arc welding showed refined microstructure compared to continuous current gas tungsten arc welding. SEM/EDS analysis revealed the segregation of Mo in the weld interface regions in both the welding techniques. The extent of microsegregation reduced the strength and toughness of the weld joint compared to the base metal. Bend test revealed cracks in the weld interface region in both the weldments.read more
Citations
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Multi-objective parametric appraisal of pulsed current gas tungsten arc welding process by using hybrid optimization algorithms
Chander Prakash,Sunpreet Singh,Manjeet Singh,Munish Kumar Gupta,Munish Kumar Gupta,Mozammel Mia,Ankit Dhanda +6 more
TL;DR: From the soft computing modeling results, it has been observed that the HPSOSA improved the process performance and has revealed the global optimal solution within minimum interval of time.
Journal ArticleDOI
Development of welding technique to avoid the sensitization in the alloy 600 by conventional Gas Tungsten Arc Welding method
A. Srikanth,M. Manikandan +1 more
TL;DR: In this paper, the fabrication of weld joints by Gas Tungsten Arc Welding (GTAW) and Pulsed Current (PCGTA) using filler wires was investigated.
Journal ArticleDOI
Water cooling assisted laser dissimilar welding with filler wire of nickel-based alloy/austenitic stainless steel
TL;DR: In this article, the effects of water cooling on solidification behavior of pulsed laser welding of Nickel-based alloy/austenitic stainless steel with filler wire, and to improve the mechanical properties of laser welded joints were carried out.
Journal ArticleDOI
Improvement of Metallurgical and Mechanical Properties of Gas Tungsten arc Weldments of Alloy 686 by Current Pulsing
B. Arulmurugan,M. Manikandan +1 more
TL;DR: In this paper, the metallurgical and mechanical behavior of twenty-first-century nickel-based superalloy 686 was examined using optical and scanning electron microscope (SEM) analyses to evaluate the microstructure of welded joints.
References
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Book
Fundamentals of Solidification
W. Kurz,D. J. Fisher +1 more
TL;DR: In this article, Atom Transfer at the Solid/Liquid Interface Morphological Instability of a Solid/ Liquid Interface Solidification Microstructure: Cells and Dendrites SolidificationMicrostructure, Eutectic and Peritectic Solute Redistribution Rapid Solidization Microstructures Summary Appendices Symbols Index
Book
Welding Metallurgy and Weldability of Stainless Steels
TL;DR: In this article, the authors introduce phase diagrams and constitution diagrams for welding of stainless steel welds, as well as a Weldability Testing Appendix 1: Nominal Compositions of Stainless Steels Appendix 2: Etching Techniques for Stainless Steel Welds Author Index Subject Index
Book
Welding Metallurgy and Weldability of Nickel-Base Alloys
TL;DR: In this article, the authors present an overview of the history of Ni-base Alloy Classification and its application in Solid-Solution-Strengthened Alloy Alloys and Welding Metallurgy.
Journal ArticleDOI
Microstructural features of dissimilar welds between 316LN austenitic stainless steel and alloy 800
TL;DR: In this article, the weld fusion zones and the interfaces with the base materials were characterised in detail using light and transmission electron microscopy, showing that the stainless steel weld metals solidified dendritically, while the 16-8-2 (16%Cr-8%Ni-2%Mo) weld metal showed a predominantly cellular substructure.