Microstructure effects on the plastic anisotropy of a fine-structured dual-phase steel

Wenqi Liu, Junhe Lian*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Abstract

In sheet metal applications, the plastic anisotropy behavior of metallic materials is significantly important, which is affected by the nature of deformation mechanisms with orientation dependency and the microstructure morphology. This study performs a numerical investigation on the anisotropic behavior during plastic deformation affected by the microstructural features. An automotive high-strength fine-structured dual-phase steel (DP1000) is selected as the reference material. The focused microstructural features are phase fraction, grain shape, and crystallographic orientation. The coupling of the fine-resolution representative volume element (RVE) method and the crystal plasticity (CP) model is employed to consider the material microstructural features and to predict the plastic response at the macroscopic level. An optimal RVE is built for the reference material. The modeling approach is validated by the anisotropic predictions of uniaxial tensile tests along material rolling, diagonal, and transversal directions (RD, DD, TD). Then a set of RVEs with varying phase fraction, grain shape, and crystallographic orientation is generated and works as a virtual laboratory to investigate the influence of microstructural features on anisotropic behavior of dual-phase steel.

Original languageEnglish
Title of host publication23rd International Conference on Material Forming (ESAFORM 2020)
PublisherElsevier
Pages1552-1560
Number of pages9
DOIs
Publication statusPublished - 26 Apr 2020
MoE publication typeA4 Article in a conference publication
EventInternational ESAFORM Conference on Material Forming - Cottbus, Germany
Duration: 4 May 20208 May 2020
Conference number: 23

Publication series

NameProcedia Manufacturing
PublisherElsevier BV
Volume47
ISSN (Print)2351-9789

Conference

ConferenceInternational ESAFORM Conference on Material Forming
Abbreviated titleESAFORM
CountryGermany
CityCottbus
Period04/05/202008/05/2020

Keywords

  • Anisotropy
  • Crystal plasticity finite element method
  • Dual-phase steel
  • Representative volume elements

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