Automatic Welding, 2021, №01



2021 №01 (02)

DOI of Article 10.37434/as2021.01.03

2021 №01 (04)

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Avtomaticheskaya Svarka (Automatic Welding), #1, 2021, pp. 14-19

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

O.S. Kostenevych¹, J. Ren²

¹The experimental design-technological office 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

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 Тabl., 9 Fig.
Keywords: duplex stainless steel, TIG welding, phase transformations, austenite, ferrite, residual stresses


Received: 08.12.2020

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