Numerical Analysis of the Effect of Phase Transformation on Residual Stresses in an Autogenous Beam Edge Weld

Abstract:

This paper presents the numerical analysis of phase proportions and residual stresses in an autogenous beam edge weld. The thin beam was welded running a heat source along its longer edge using a TIG process. There is no addition of any material so the focus of modelling the process could be concentrated on the thermal analysis and the phase transformations. Temperature dependent material properties and a continuous cooling transformation (CCT) diagram of the base material were provided. The simulations took into account metallurgical effects and used a Goldak-type heat source. Simulations with and without phase transformations were carried out, in order to analyse the effect on the predicted residual stress.

• Periodical: Materials Science Forum (Volumes 768-769)
• Pages: 652-659
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.768-769.652
• Online since: September 2013
• Authors: Martina M. Joosten
• Keywords: Ferritic Steel, Modeling, Phase Transformation, Residual Stress

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