Acta Metallurgica Sinica (English Letters) >
Prediction of the Residual Welding Stress in 2.25Cr-1Mo Steel by Taking into Account the Effect of the Solid-State Phase Transformations
Received date: 2012-09-17
Revised date: 2013-01-16
Online published: 2013-05-06
Supported by
Open-Fund Research of State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, China and the Fundamental Research Funds for Central University (No. CDJZR12130036).
A computational approach based on the thermal elastic plastic finite element method was developed for predicting welding residual stress in low carbon alloyed steel welds by taking into account the effect of the solid-state phase transformations. The kinetics of phase transformations was described by Johnson Mehl Avrami Kolmogrov (JMAK) equation for bainitic transition and by Koistinen-Marburger (K-M) relationship for martensitic transition. Moreover, an additive rule depending on volumetric phase fraction was adopted to represent the material property changes during heating and cooling. Consequently, the residual welding stresses in a 2.25Cr1Mo steel TIG welded plate were computed. Early calculation results suggest that the bainitic and martensitic transformations took place in the weld the heat-affected zone drastically reduce the residual longitudinal tensile stress in the region.
Dean DENG , Yangang TONG , Ninshu MA , Hidekazu MURAKAWA . Prediction of the Residual Welding Stress in 2.25Cr-1Mo Steel by Taking into Account the Effect of the Solid-State Phase Transformations[J]. Acta Metallurgica Sinica (English Letters), 2013 , 26(3) : 333 -339 . DOI: 10.1007/s40195-012-0163-8
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