Formation of ultrafine grained ferrite by warm deformation of lath martensite in low-alloy steels with different carbon content

Behrang Poorganji, Goro Miyamoto, Tadashi Maki, Tadashi Furuhara

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Formation of ultrafine grained ferrite by warm deformation of tempered lath martensite was investigated in Fe-2Mn-(0.1-0.8)C (mass%) alloys. Analysis of initial microstructure shows that an increase in carbon content leads to a decrease of lath martensite block size. Fine equiaxed (α) grains surrounded by high-angle boundaries are formed by dynamic recrystallization. As carbon content increases, the recrystallized α grain size decreases. It is considered that dynamic recrystallization of tempered lath martensite is a continuous type.

Original languageEnglish
Pages (from-to)279-281
Number of pages3
JournalScripta Materialia
Volume59
Issue number3
DOIs
Publication statusPublished - 2008 Aug 1

Keywords

  • Dynamic recrystallization
  • Grain refining
  • Lath martensite
  • Thermomechanical processing

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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