Investigation of the microstructure of dissimilar welds in duplex stainless steel and low alloyed steel

Ion Mitelea; Ion Dragoş Uţu; Olimpiu Karancsi; Sorin Dumitru Urlan; Corneliu Marius Crăciunescu

doi:10.3139/120.111292

Article

Investigation of the microstructure of dissimilar welds in duplex stainless steel and low alloyed steel

Ion Mitelea , Ion Dragoş Uţu , Olimpiu Karancsi , Sorin Dumitru Urlan and Corneliu Marius Crăciunescu

Published/Copyright: April 24, 2019

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From the journal Materials Testing Volume 61 Issue 2

Abstract

The chemical and microstructural heterogeneities of arc welded joints of duplex stainless steel (X2CrNiMoN22-5-3) and chromium-molybdenum (13CrMo4-5) low alloy steel have been investigated. Rutile coated electrodes containing chromium and molybdenum amounts similar to that of duplex stainless steel but with a higher nickel content have been selected for the manual welding of the joints. The higher nickel content has been chosen, since nickel promotes the formation of austenite and induces an approximately equal proportion of ferrite and austenite in the weld. At the interface between the low alloyed steel and the weld metal as well as in the cross section of the weld metal, chemical and microstructural variations have been determined.

*Correspondence Address, Assistant Prof. Dr. Ion-Dragos Utu, Material Science and Manufacturing Department, University Politehnica Timisoara, Timisoara, Romania, E-mail: dragos.utu@upt.ro

Dr. Ion Mitelea is currently Professor of Materials Science, Materials and Heat Treatments for Welded Structures and Selection and Use of Engineering Materials at the University Politehnica Timisoara, Romania.

Dr. Ion Dragoş Uţu, born 1978, graduated from the University Politehnica Timisoara, Romania, as a Bachelor and PhD, and is currently Associate Professor in the Material Science and Manufacturing Department of the University Politehnica Timisoara, Romania.

Dr. Olimpiu Karancsi, is an assistant at Victor Babes University of Medicine and Pharmacy, Timisoara, Romania and a specialist in oral implantology and prosthetic restorations on implants.

Sorin Dumitru Urlan is a PhD student at the University Politehnica Timisoara, Romania. He performs his research experiments under the coordination of Prof. Mitelea.

Dr. Corneliu Marius Craciunescu is Professor of Materials Science in the Department of Materials and Manufacturing Enginering at the University Politehnica Timisoara, Romania. His main research area is magnetic shape memory alloys.

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Published Online: 2019-04-24

Published in Print: 2019-02-04

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https://doi.org/10.3139/120.111292