Influence of mesostructure for deformation characteristics and formability in Dual Phase steels

Ryoji Kishi*, Keiko Natori, Yoshihiko Arao, Tatsuya Tanaka

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


In recent years, the attempt to control mesostructure in metal is actively conducted to give various properties to metal. The purpose of this study is to investigate the influence of formability caused by the mesostructural difference. We performed hatbending experiment on two sheets of Dual Phase steel with different mesostructure which are defined as the same grade, and measured springback angle. And we compared the scale of Bauschiger effect that affects springback angle under bending / unbending. Additionally to investigate the mechanism of the difference in Bauschinger effect, numerical analysis which was modelled to estimate the influence of the mesostructural difference was performed. As a result, it was found that insignificant different of dual-phase structure should be easy to cause the difference in the scale of Bauschinger effect.

Original languageEnglish
Pages (from-to)1372-1377
Number of pages6
JournalProcedia Engineering
Publication statusPublished - 2014
Externally publishedYes
Event11th International Conference on Technology of Plasticity, ICTP 2014 - Nagoya, Japan
Duration: 2014 Oct 192014 Oct 24


  • Bauschinger effect
  • Dual phase
  • High strength steel
  • Mesostructure
  • Multiscale analysis
  • Sheet metal forming
  • Springback

ASJC Scopus subject areas

  • Engineering(all)


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