Fracture of DP590 steel : a multi-scale modeling approach

Nikhare, Chetan, Asgari, Alireza, Weiss, Matthias and Hodgson, Peter D. 2010, Fracture of DP590 steel : a multi-scale modeling approach, Steel research international, vol. 81, no. 9, Special Issue : Proceedings of the 13th International Conference on Metal Forming, pp. 1450-1453, doi: 10.1002/srin.201190002.

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Title Fracture of DP590 steel : a multi-scale modeling approach
Author(s) Nikhare, Chetan
Asgari, Alireza
Weiss, MatthiasORCID iD for Weiss, Matthias
Hodgson, Peter D.
Journal name Steel research international
Volume number 81
Issue number 9
Season Special Issue : Proceedings of the 13th International Conference on Metal Forming
Start page 1450
End page 1453
Total pages 4
Publisher Wiley – VCH Verlag
Place of publication Weinheim, Germany
Publication date 2010-09
ISSN 0177-4832
Keyword(s) advanced high strength steel
dual phase
multi-scale modelling
Summary Advanced high strength steel sheets are one of the higher strength advance material developed by the steel industry for automotive bodies. One of the categories of this advanced high strength steel is Dual Phase (DP) steel. This steel consists of a two phase microstructure where soft and hard phase acts together to offer a high strength composite effect. The combination of high strength and ductility exhibited by these sheets allows the design and manufacture of complex parts. However, during forming certain grades of DP steel sudden cracking can occur without any intimation of necking. This abnormal forming behavior is difficult to accurately predict because most classical modelling approaches are not designed for such micro-structurally heterogeneous materials. These modelling approaches are generally based on an average representation of the material behaviour in a continuum mechanics formulation. This works for materials that are homogenous, or at least could be assumed to be homogenous at scales lower than the naked eye can see. However, for a material like advanced high strength steel, the microstructure plays a significant role in dictating the mechanical behavior at the macro-scale. This paper studies the forming and fracture behavior through multi-scale modeling of DPO590 steel. It is found that the sufficient accuracy can be achieved from multi-scale modeling when comparing with experiments.
Language eng
DOI 10.1002/srin.201190002
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 861205 Sheet Metal Products
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, Wiley – VCH Verlag
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