Recovery and recrystallization in cold worked Fe - O steels

A. Belyakov, Y. Sakai, T. Hara, Y. Kimura, K. Tsuzaki

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Several Fe - O samples containing different fractions of dispersed oxides were processed by mechanical milling followed by consolidating rolling. The samples were annealed at 1000°C and then compressed to strains of 0.35, 1.2, and 1.9 at an ambient temperature. Dispersed oxides with size of about 20 nm were homogeneously distributed throughout the ferrite matrix and their volume fractions varied from about 0.3% to 2.0%. To study the annealing softening mechanisms, the cold-worked specimens were annealed for an hour at 700°C and 800°C. The fine dispersion of oxide particles was very effective to suppress any softening processes. Primary recrystallization fully developed in the samples with volume fraction of dispersed oxides of about 0.3%. Increase in the fraction of dispersed oxides resulted in decrease of the fraction recrystallized. In the samples containing 2.0 vol.% of dispersed oxides, only recovery was the annealing softening process irrespective of the preceding cold strain. The critical volume fraction of dispersed particles for development of the primary recrystallization is considered to range from 0.5 to 2.0%.

Original languageEnglish
Pages (from-to)229-234
Number of pages6
JournalMaterials Science Forum
Volume467-470
Issue numberI
DOIs
Publication statusPublished - 2004
EventProceedings of the Second Joint International Conferences on Recrystallization and Grain Growth, ReX and GG2, SF2M - Annecy, France
Duration: Aug 30 2004Sep 3 2004

All Science Journal Classification (ASJC) codes

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

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