Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지
DOI QR코드

DOI QR Code

Prediction of Phase Transformation of Boron Steel Sheet during Hot Press Forming using Material Properties Modeler and DEFORMTM-HT

보론 강판의 핫 프레스 포밍 공정 시 재료 물성 모델러와 DEFORMTM-HT를 활용한 상 변태 예측

  • Published : 2008.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

Combined phase transformation and heat transfer was considered on the simulation of hot press forming process, using material properties modeler, $JMatPro^{(R)}$ and a finite element package, $DEFORM^{TM}$-HT. In order to obtain high temperature mechanical properties and flow curves for different phases, a material properties modeler, $JMatPro^{(R)}$ was used, avoiding expensive and extensive high temperature materials tests. The results successfully show that the strength of hot press forming parts may exhibit different strength in the same parts, depending on the contact of blank with tooling. It was also shown effectively that the strength of the parts can be controlled by designing appropriate cooling paths and coolants. This was shown in terms of different heat convection coefficient in the calculation. Overall, current combination of software was shown to be an effective tool for the tool and process design of hot forming process, although the material modeler needs to be additionally verified by an appropriate set of high temperature materials test.

Keywords

References

  1. T. Altan, 2006, Hot-stamping boron-alloyed steels for automotive parts Part I: Process methods and uses, Stamping Journal, December, pp. 40-41
  2. T. Altan, 2007, Hot-stamping boron-alloyed steels for automotive parts Part II: Microstructure, material strength changes during hot stamping, Stamping Journal, January, pp. 14-15
  3. Y. R. Cho, J. G. Oh, H. G. Kim, S. H. Pack, 2007, Developing Trends and Required Properties of Steel for Hot Press Forming, Conference proceeding of 2007 KSTP spring annual meeting, pp. 92-102
  4. M. Merklein, J. Lechler, M. Geiger, 2006, Characterisation of the flow properties of the quenchenable ultra high strength steel 22MnB5, Annals of the CIRP, Vol. 55, pp.229-232 https://doi.org/10.1016/S0007-8506(07)60404-1
  5. M. Merklein, J. Lechler, 2006, Investigation of the thermo-mechanical properties of hot stamping steels, Journal of Materials Processing Technology, Vol. 177, pp. 452-455 https://doi.org/10.1016/j.jmatprotec.2006.03.233
  6. M. Geiger, M. Merklein, C. Hoff, 2005, Basic Investigations on the Hot Stamping Steel 22MnB5, Advanced Materials Research Vol. 6-8, pp. 795-802 https://doi.org/10.4028/www.scientific.net/AMR.6-8.795
  7. A. Turetta, S. Bruschi, A. Ghiotti, 2006, Investigation of 22MnB5 formability in hot stamping operations, Journal of Materials Processing Technology, Vol. 177, pp. 396-400 https://doi.org/10.1016/j.jmatprotec.2006.04.041
  8. M. Eriksson, M. Oldenburg, M. C. Somani, L. P. Karjalainen, 2002, Testing and evaluation of material data for analysis of forming and hardening of boron steel components, Modelling and simulation in materials science and engineering, Vol. 10, pp. 277-294 https://doi.org/10.1088/0965-0393/10/3/303
  9. M. Naderi, L. Durrenberger, A. Molinari, W. Bleck, 2008, Constitutive relationships for 22MnB5 boron steel deformed isothermally at high temperature, Materials Science & Engineering A, Vol. 478, pp. 130-139 https://doi.org/10.1016/j.msea.2007.05.094
  10. H. S. Kim, M. H. Seo, S. J. Kim, S. C. Baik, W. J. Bang, 2001, Finite Element Analysis and Experimental Investigation on the Thermal Deformation Behavior of Steel Sheets during Press Hardening, J. Kor. Int. Met. & Mater., Vol. 39, No. 9, pp.1076-1083
  11. A. E. Tekkya, H. Karbasian, W. Homberg, M. Kleiner, 2007, Thermo-mechanical coupled simulation of hot stamping components for process design, Production Engineering Research and Development, Vol. 1, pp. 85-89 https://doi.org/10.1007/s11740-007-0025-9
  12. Marc 2005, http://www.mscsoftware.com products/ marc.cfm
  13. PAMSTAMP, 2007, http://www.esi-group.com/ newsite/products/metal-forming/pam-stamp-2g
  14. JMatPro, 2007, http://www.sentesoftware.co.uk
  15. Sente Software, 2007, JMatPro introductory manual
  16. N. Saunders, Z. Guo, A. P. Miodownik, J. -Ph. Schillé, 2004, Modelling the material properties and behavior of multicomponent alloys, 22nd CAD-FEM User's Meeting 2004, International Congress on FEM Technology with ANSYS CFX & ICEM CFD Conference, pp. 1-8
  17. $DEFORM^{TM}$-HT, 2008, http://www.deform.com/
  18. J. S. Kirkaldy, B. A. Thomson, E.A. Baganis, 1978, Hardenability concepts with applications to steel, eds. J.S. Kirkaldy and D.V. Doane,(Warrendale, PA: AIME, 1978), 82

Cited by

  1. Study on Heat Transfer Characteristic in Hot Press Forming Process vol.22, pp.2, 2013, https://doi.org/10.5228/KSTP.2013.22.2.101
  2. Effect of hot-stamping process conditions on the changes in material strength vol.16, pp.4, 2015, https://doi.org/10.1007/s12239-015-0063-9
  3. Thermo-mechanical Simulation of Boron Steel Cylinders during Heating and Rapid Cooling vol.23, pp.8, 2014, https://doi.org/10.5228/KSTP.2014.23.8.475
  4. A Local Softening Method for Reducing Die Load and Increasing Service Life in Trimming of Hot Stamped Part vol.20, pp.6, 2011, https://doi.org/10.5228/KSTP.2011.20.6.427