Effect of strain rates on strength of sheet steels

Shusaku Takagi, Kazuya Miura, Osamu Furukimi, Takashi Obara, Toshiyuki Kato, Shinji Tanimura

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Abstract

Stain rate sensitivity of deformation behavior in various sheet steels were investigated in order to find out the suitable steel for automotive anti-crash parts. Dual phase steels consisted of ferrite and martensite phases absorbed higher energy at strain rate of 2×10 3/s with lower yield strength at strain rate of 2×10 -2/s, compared with other steels. Higher energy absorption of dual phase steels was due to high strain rate sensitivity of yield strength and n-value. Increase of volume fraction or large surface area of martensite phase in dual phase steel led higher strain rate sensitivity in work hardenability as well as yield strength.

Original languageEnglish
Pages (from-to)60-65
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume83
Issue number11
Publication statusPublished - Dec 1 1997

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

Takagi, S., Miura, K., Furukimi, O., Obara, T., Kato, T., & Tanimura, S. (1997). Effect of strain rates on strength of sheet steels. Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 83(11), 60-65.