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http://dx.doi.org/10.5228/KSPP.2008.17.4.249

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

Kang, K.P. ((주)마케팅랩)
Lee, K.H. ((주)마케팅랩)
Kim, Y.S. (경북대학교 기계공학과)
Ji, M.W. (한남대학교 대학원 기계공학과)
Suh, Y.S. (한남대학교 기계공학과)
Publication Information
Transactions of Materials Processing / v.17, no.4, 2008 , pp. 249-256 More about this Journal
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
Hot Press Forming; Boron Steel; Material Properties Modeler; Phase Transformation; Finite Element Analysis; JMatPro$DEFORM^{TM}$-HT;
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