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Effect of nitrogen on the critical strain for dynamic strain aging in high-manganese twinning-induced plasticity steel

  • Sangwon Lee
  • , Jinkyung Kim
  • , Seok Jae Lee*
  • , Bruno C. De Cooman
  • *Corresponding author for this work
  • Pohang University of Science and Technology

Research output: Contribution to journalJournal articlepeer-review

Abstract

The effect of nitrogen on the dynamic strain again behavior of a Fe-18% Mn-0.6% C twinning-induced plasticity steel was investigated by means of in situ infrared thermography during tensile testing. The addition of nitrogen affected the initiation of the Portevin-Le Châtelier bands and the characteristic shape of the serrations on the stress-strain curve. Also, nitrogen additions resulted in an increase in the critical strain for dynamic strain aging.

Original languageEnglish
Pages (from-to)528-531
Number of pages4
JournalScripta Materialia
Volume65
Issue number6
DOIs
StatePublished - 2011.09

Keywords

  • Dynamic strain aging (DSA)
  • Nitrogen effect
  • Portevin-Le Châtelier (PLC) band
  • Twinning-induced plasticity (TWIP)

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