Influence of Mesostructure for Deformation Characteristics and Formability in Dual Phase Steels

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 hat-bending experiment on two sheets of Dual Phase...

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Bibliographic Details
Published inProcedia engineering Vol. 81; pp. 1372 - 1377
Main Authors Kishi, Ryoji, Natori, Keiko, Arao, Yoshihiko, Tanaka, Tatsuya
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2014
Subjects
Bauschinger effect
Dual phase
High strength steel
Mesostructure
Multiscale analysis
Sheet metal forming
Springback
Bauschinger effect
Sheet metal forming
Dual phase
Springback
High strength steel
Multiscale analysis
Mesostructure
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Summary: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 hat-bending 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.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2014.10.159