Browse > Article
http://dx.doi.org/10.5228/KSPP.2009.18.3.236

Mechanical and Forming Characteristics of High-Strength Boron-Alloyed Steel with Hot Forming  

Chae, M.S. (경북대학교 기계공학과)
Lee, G.D. ((주)화신)
Suh, Y.S. (한남대학교 기계공학과)
Lee, K.H. (마케팅랩)
Kim, Y.S. (경북대학교 기계공학부)
Publication Information
Transactions of Materials Processing / v.18, no.3, 2009 , pp. 236-244 More about this Journal
Abstract
In response to growing environmental and collision-safety concerns, the automotive industry has gradually used high-strength and ultla-high-strength steels to reduce the weight of automobiles. In order to overcome inherent process disadvantages of these materials such as poor formability and high springback at room temperature, hot forming has recently been developed and adopted to produce some important structural parts in automobiles. This method enables manufacturing of components with complex geometric shapes with minimal springback. In addition, a quenching process may enhance the material strength by more than two times. This paper investigates mechanical and forming characteristics of high-strength boron-alloyed steel with hot forming, in terms of hardness, microstructure, residual stress, and springback. In order to compare with experimental results, a finite element analysis of hot forming process coupled with phase transformation and heat transfer was carried out using DEFORM-3D V6.1 and also, to predict high temperature mechanical properties and flow curves for different phases, a material properties modeler, JMatPro was used.
Keywords
Hot Forming; High-strength Boron-alloyed Steel; Mechanical and Forming Characteristics; JMatPro; Finite Element Analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 S. Chowdhury, M. T. Laugier, J. Henry, 2007, XRD stress analysis of CVD diamond coatings on SiC substrates, International Journal of Refractory Metals & Hard Materials, Vol. 25, pp. 39-45   DOI   ScienceOn
2 S. H. Hong, D. W. Lee, S. S. Cho, W. S. Joo, 2002, A study on the measurement of residual stress in rolled steel for automobile using X-ray diffraction, Journal of the Korean Society of Automotive Engineers, Vol. 10, No. 6, pp. 150-157
3 Y.S.Kim, 2009, Engineering Plasticity-2nd, Chap.9, Sigma Press, Korea
4 N. Saunders, Z. Guo, A. P. Miodownic, J. Schile, 2007, The calculation of TTT and CCT diagrams for general steels, Sente software
5 T. Altan, 2006, Hot-stamping boron-alloyed steels for automotive parts, Stamping Journal, pp. 40-41
6 T. Altan, 2007, Hot-stamping boron-alloyed steels for automotive parts, Stamping Journal, pp. 14-15
7 C. Federici, S. Maggi, S. Rigoni, 2006, The use of advanced high strength steel sheets in the automotive industry, Fiat Auto, Engineering & Design-Materials Engineering, Turin, Italy, pp. 1-12
8 J. S. Lee, M. S. Chae, C. D. Park, Y. S. Kim, 2007, Mechanical and microstructural characteristics of a high-strength boron-alloyed steel for hot press forming, The Korean Society of Mechanical Engineers, Spring Conference, pp. 344-349
9 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   DOI   ScienceOn
10 C. R. Simcoe, A. R. Elsea, G. K. Mainning, 1955, Study of the effect of boron on the decomposition of austenite, Transactions of the Metallurgical Society of AIME, Vol. 206, pp. 193-200
11 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   DOI   ScienceOn
12 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   DOI   ScienceOn
13 M. Suehiro, K, Kusumi, T. Miyakoshi, J. Maki M. Ohogami, 2003, Properties of aluminium-coated steels for hot-forming, Nippon Steel Technical Report, Vol. 88, pp, 16-21
14 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, Modeling and Simulation in Materials Science and Engineering, Vol. 10, pp. 277-294   DOI   ScienceOn
15 N. Saunders, Z. Guo, A. P. Miodownic, J. Schile, 2007, Material properties of process simulation, Sente software
16 K. H. Lee, K. P. Kang, 2008, Calculation of material properties with JMatPro for the process simulation, The Korean Society for Technology of Plasticity Spring Conference, pp. 142-145
17 DEFORMTM-3D Version5.1 User's manual, http://www.deform.com/
18 K. P. Kang, K. H. Lee. Y. S. Kim, M. W. Ji, Y. S. Suh, 2008, Prediction of phase transformation of boron steel sheet during hot press forming using material properties modeler and DEFORMTM-HT, Transactions of Materials Processing, Vol, 17, No. 4, pp. 249-256   DOI   ScienceOn