Residual stress in laser bent steel components

M. Topić, R. Bucher, W. Vorster, S. Y. Zhang, P. McGrath, A. M. Korsunsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

The kinetics of plastic deformation and microstructural evolution, and the residual stress in particular, were investigated on the steel plates (SABS 1431) bent by laser beam. The steel plates were bent by different number of laser scans and therefore, each was bent to a different extent. The stress results obtained by x-ray diffraction (sin2Ψ-method) show a higher compressive stress along the laser path than in the transverse direction. It was also found that stress relaxation occurs during multi-scan laser forming process and most importantly, that the stress is not significantly different in comparison to the stress, which initially existed in rolled steel plates. The metallographic analyses show that phase transformation, dynamic recovery and recrystallization processes occur during laser forming.

Original languageEnglish
Title of host publicationResidual Stresses VII - Proceedings of the 7th European Conference on Residual Stresses, ECRS 7
EditorsWalter Reimers, S. Quander
PublisherTrans Tech Publications Ltd
Pages297-304
Number of pages8
ISBN (Print)9780878494149
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event7th European Conference on Residual Stresses, ECRS 7 - Berlin, Germany
Duration: 13 Sep 200615 Sep 2006

Publication series

NameMaterials Science Forum
Volume524-525
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference7th European Conference on Residual Stresses, ECRS 7
Country/TerritoryGermany
CityBerlin
Period13/09/0615/09/06

Keywords

  • Laser forming process
  • Residual stress
  • X-ray diffraction

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