Effect of mesostructure on strain rate dependent behaviour in high strength steel sheets

K. Natori, R. Kishi, H. Shimahara, Y. Arao, T. Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The mechanism of strain rate dependence on the Bauschinger effect in dualphase type high strength steel sheets is investigated and the influence of mesostructure differences on spring-back is estimated in this study. Compression-tensile tests at a strain rate from 0.007/s to 100/s is conducted. To differentiate between the multiphase structure-induced effect and the matrix properties, the same tests are also conducted for ferrite single phase steel. As a result, the Bauschinger effect on dual phase steel is not associated with the matrix properties independently. Moreover, it is revealed that a multiphase structure-induced effect acts a dominant function for deformation characteristics through experiments and micro observations.

Original languageEnglish
Title of host publication2014 International Conference on High Performance and Optimum Design of Structures and Materials, HPSM 2014 which incorporated the Seminar on Optimum Design in Engineering, OPTI 2014
PublisherWITPress
Pages151-162
Number of pages12
ISBN (Print)9781845647742
DOIs
Publication statusPublished - 2014
Externally publishedYes
EventInternational Conference on High Performance and Optimum Design of Structures and Materials, HPSM/OPTI 2014 - Ostend, Belgium
Duration: 2014 Jun 92014 Jun 11

Publication series

NameWIT Transactions on the Built Environment
Volume137
ISSN (Print)1743-3509

Conference

ConferenceInternational Conference on High Performance and Optimum Design of Structures and Materials, HPSM/OPTI 2014
CountryBelgium
CityOstend
Period14/6/914/6/11

Keywords

  • Bauschinger effect
  • Dual phase
  • High strength steel
  • Mesoscale structure
  • Multiscale analysis
  • Sheet metal forming
  • Strain rate dependence

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

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