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Effect of laser forming on mechanical properties of multiple-phase steels by using a thermal–microstructure–mechanical model

  • Rui-bin Gou , Wen-jiao Dan , Min Yu and Wei-gang Zhang
Published/Copyright: October 3, 2018
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 109 Issue 10

Abstract

Based on a forming temperature-controlled mixed strain-hardening law, a temperature-controlled thermal–microstructure–mechanical model was developed to predict the deformation in ferrite–martensite dual-phase steel before and after complex laser forming. Phase transformation in dual phase steel was predicted by coupling a kinetic transformation model with the developed model during laser forming. The corresponding algorithm of the constitutive model was used in three-dimensional finite element method to simulate the material deformation and mechanical properties during the laser forming. The simulated results agree well with the experimental results. Laser forming influences the mechanical properties of the material significantly, leads to bending deformation of the scanned sample and induces a ferrite-to-martensite transformation. The influence of scanning line number on the tensile strength and bending deformation of the scanned specimen was investigated. The tensile strength and bending angle are related positively to the number of scanning lines on the sample.

Keywords: Thermal–microstructure–mechanical model; Phase transformation; Stress-strain curve; Sheet metal; Laser forming
*Correspondence address, Dr. Wen-jiao Dan, Department of Engineering Mechanics, Shanghai Jiao Tong University, No. 800, Dongchuan Road, 200240, Shanghai, P.R. China, E-mail:
** Associate Prof. Min Yu, College of Architecture, Anhui Science and Technology University, No. 1501, Huangshan Avenue, 233000, Bengbu, Anhui, P.R. China, E-mail:

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Received: 2018-01-09
Accepted: 2018-04-30
Published Online: 2018-10-03
Published in Print: 2018-10-16

© 2018, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111690
Keywords for this article
Thermal–microstructure–mechanical model; Phase transformation; Stress-strain curve; Sheet metal; Laser forming

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Statistical analysis of micropore size distributions in Al–Si castings evaluated by X-ray computed tomography
  5. Effect of processing parameters on the microstructural and mechanical properties of aluminum–carbon nanotube composites produced by spark plasma sintering
  6. Synthesis of ZnO nanomaterials with different morphologies by hydrothermal method
  7. Dielectric studies of CCTO-based nanocomposite ceramic synthesized by a solid state route
  8. Effect of laser forming on mechanical properties of multiple-phase steels by using a thermal–microstructure–mechanical model
  9. Effect of temper rolling and subsequent annealing on texture development and magnetic permeability of semi-processed electrical steel with 2.3 wt.% Si
  10. Compressive behavior of double-layered functionally graded 316L stainless steel foam
  11. Microstructure and mechanical behavior of Mg–Y–Zn alloys with respect to varying content of LPSO phase
  12. Microstructural evolution of semi-solid A356 alloy during reheating
  13. Lewis–Br⊘nsted induction acidity in SBA-15 modified with Zr and P
  14. Short Communications
  15. Nanophase formation during the heat treatment of Al-13Si-5Cu-2Ni-1Mg alloy and the abnormal enhancement of its tensile properties
  16. Effect of minor Nd substitution for Y on microstructure and corrosion resistance of extruded Mg–Zn–Y alloy
  17. DGM News
  18. DGM News
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