Effect of r-value and texture on plastic deformation and necking behavior in interstitial-free steel sheets

Gyu Jin Oh, Kye Man Lee, Moo Young Huh, Jin Eon Park, Soo Ho Park, Olaf Engler

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Three initial tensile specimens having different textures and, in consequence, different r-values were cut from a sheet of an interstitial-free steel. Using these specimens, the effect of r-value and texture on plastic deformation and the necking behavior were studied by tackling the strain state and texture during tensile tests. A reduced decrease in work hardening rate of tensile specimens with higher r-values led to a slower onset of diffuse necking which offers an increased uniform elongation. A slower reduction in thickness of specimens with a higher r-value provided a favorable resistance against onset of failure by localized necking.

Original languageEnglish
Pages (from-to)26-34
Number of pages9
JournalMetals and Materials International
Volume23
Issue number1
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • interstitial-free steel
  • necking
  • tensile test
  • texture
  • work hardening

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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