Influence of thermo-mechanical material properties of different steel grades on welding residual stresses and angular distortion

Ayjwat A. Bhatti, Zuheir Barsoum, Hidekazu Murakawa, Imad Barsoum

Research output: Contribution to journalArticlepeer-review

135 Scopus citations

Abstract

The present study investigates the influence of thermo-mechanical material properties of different steel grades (S355-S960) on welding residual stresses and angular distortion in T-fillet joints. Different cases in which temperature dependent thermo-mechanical material properties are considered as constant, linear, and as a function of temperature are simulated by using finite element (FE) method. Experiments are carried out to evaluate temperature dependent yield stress and Young's modulus for S700 and S960 steel grades. Furthermore, JMat Pro software is used to obtain the remaining thermo-mechanical material properties. The numerical predictions of angular distortion and transverse residual stresses are validated with experimental measurements. It is observed that for assessment of residual stresses, except yield stress, all of the thermo-mechanical properties can be considered as constant. For the prediction of angular distortions with acceptable accuracy, heat capacity, yield stress and thermal expansion should be employed as temperature dependent in the welding simulations.

Original languageBritish English
Pages (from-to)878-889
Number of pages12
JournalMaterials and Design
Volume65
DOIs
StatePublished - 1 Jan 2015

Keywords

  • Angular distortion
  • High strength steel
  • Thermo-mechanical material properties
  • Welding residual stress

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