Hall-Petch strengthening in Fe-34.5Mn-0.04C steel cold-rolled, partially recrystallized and fully recrystallized

Y.H. Wang, J. M. Kang, Y. Peng, T. S. Wang, N. Hansen, X. Huang*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

An Fe-34.5Mn-0.04C steel has been processed by cold rolling and annealing to prepare samples with a lamellar structure, a recrystallized grain structure and a composite structure of layers of recovered and recrystallized structures. For the recrystallized grain structure and the lamellar structure, the flow stress has been analyzed by applying Hall-Petch formulations. For the composite structure, the rule of mixture has been applied to calculate the flow stress, revealing an extra strengthening from a constraint effect. An excellent combination of strength and ductility has been found in a composite with 10% hard lamellae in a recrystallized grain structure.
Original languageEnglish
JournalScripta Materialia
Volume155
Pages (from-to)41-45
ISSN1359-6462
DOIs
Publication statusPublished - 2018

Keywords

  • Annealing
  • Hall-Petch effect
  • Laminated composite structure
  • Rolling
  • Steel

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