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Numerical simulation of induction hardening of torsion bar

Norouznejad, H ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. Publisher: 2011
  3. Abstract:
  4. In order to improve the fatigue performance of torsion bar, induction surface hardening is performed. The aim of the present study is to compare the experimental residual stress fields measured by X-ray diffraction with those predicted from finite element modeling of the whole induction surface hardening process. Temperature and residual stress distributions are affected by the component geometry, the material behavior and the induction treatment parameters. Based on the residual stress distribution and the fatigue loading, cracks can nucleate from the surface or below the hardened layer. Therefore, it is very important to determine the residual stress distribution and optimize the process, especially for safety critical engineering components. Results of present study show that the improvement of fatigue performance is due to development of both hard microstructure and compressive residual stress at the surface layer of torsion bar during induction hardening
  5. Keywords:
  6. Residual stress ; Component geometries ; Compressive residual stress ; Engineering components ; Fatigue loadings ; Fatigue performance ; Finite element modeling ; Hardened layers ; Induction hardening ; Induction surface hardening ; Material behavior ; Residual stress distributions ; Residual stress fields ; Safety-critical ; Surface layers ; Torsion bar ; Treatment parameters ; Finite element method ; Induction heating ; Numerical methods ; Residual stresses ; Stress analysis ; Stress concentration ; Surfaces ; Torsional stress ; X ray diffraction ; Hardening
  7. Source: Proceedings of the World Congress on Engineering 2011, WCE 2011, 6 July 2011 through 8 July 2011 ; Volume 3 , July , 2011 , Pages 2080-2083 ; 9789881925152 (ISBN)
  8. URL: http://www.iaeng.org/publication/WCE2011/WCE2011_pp2080-2083.pdf