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2021 №01 (02) DOI of Article
10.37434/tpwj2021.01.03
2021 №01 (04)

The Paton Welding Journal 2021 #01
TPWJ, 2021, #1, 12-17 pages

Prediction of residual stresses after welding of duplex steel taking into account phase transformations

Authors
O.S. Kostenevych1 and J. Ren2
1The Experimental Design and Technological Bureau of the E.O. Paton Electric Welding Institute of the NAS of Ukraine 15 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: alenakostenevich@ gmail.com
2School of Engineering, Liverpool John Moores University 3 Byron Str., United Kingdom. E-mail: x.j.ren@ ljmu.ac.uk

Abstract
The presented study involved mathematical modelling of single pass TIG welding of duplex stainless steel S32205. The temperature fields, the fusion zone and HAZ dimension, the cooling rate fields, residual stresses taking into account kinetics of dissolution of austenite during heating and kinetics of precipitation of austenite during cooling were obtained. The comparative analysis of residual stresses with/without phase transformations showed the difference of residual stresses distribution due to different amounts of austenite and ferrite and due to volumetric changes during phase transformations. 24 Ref, 1 Тable, 9 Figures.
Keywords: duplex stainless steel, TIG welding, phas e transformations, austenite, ferrite, residual stresses

Received 08.12.2020

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