Meso-Scopic Analysis of Strain Path Change Effect on the Hardening Behavior of Dual-Phase Steel
SCIE
SCOPUS
- Title
- Meso-Scopic Analysis of Strain Path Change Effect on the Hardening Behavior of Dual-Phase Steel
- Authors
- Ha, J; Lee, J; Kim, JH; Barlat, F; Lee, MG
- Date Issued
- 2014-06
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- To study the anisotropic hardening behaviors of dual-phase steels under strain path changes, a meso-scale finite element analysis was considered with the representative volume elements. For the constitutive model, the Homogeneous yield function based on Anisotropic Hardening (HAH model) was used as a phenomenological constitutive equations to describe complex anisotropic material responses in an efficient way. For the martensite inclusions, three different configurations - elongated, large, and small spherical shapes - with two different volume fractions - 10 and 30% - were assumed. In order to represent strain path changes, two loading conditions were considered: tension-compression and tension-orthogonal tension. The simulation results for tension-compression test showed that the Bauschinger ratio increases as the volume fraction of martensite inclusion increases. For the tension-orthogonal tension test, the hard martensite attenuated the transient flow stress characteristics, which were observed in the single ferritic phase. The effect of hard phase inclusion was analytically explained using a simple one-dimensional analysis based on the elastic-linear plastic theory.
- Keywords
- meso-scale; representative volume element; dual-phase steel; Bauschinger effect; cross-hardening; finite element simulation; PLASTICITY; MODEL; FORMABILITY; PREDICTION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13822
- DOI
- 10.1002/SRIN.201300186
- ISSN
- 1611-3683
- Article Type
- Article
- Citation
- STEEL RESEARCH INTERNATIONAL, vol. 85, no. 6, page. 1047 - 1057, 2014-06
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