Development of submicrocrystalllne Fe - O steels under mechanical milling followed by consolidation

Kaneaki Tsuzaki

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

Microstructure evolution in Fe - O steels under mechanical milling followed by consolidating rolling was studied. The final microstructure that developed after consolidation was shown to depend on the volume fraction of the dispersed oxides. In the samples milled for 100 hours, the average grain size decreased from 0.7 to 0.2 μm with increase in the amount of oxygen from 0.2 to 1.5 mass%. The milling time had a similar effect on the final microstructure. The relatively short milling time of 20 hours resulted in the evolution of relatively coarse elongated grains with a large fraction of low-angle subgrain boundaries. In contrast, fine equiaxed grains (about 0.2 μm in size) with a near random boundary misorienations developed in the Fe - 0.6%O sample that was milled for 300 hours. The structural changes taking place under mechanical milling followed by consolidating rolling and the effect of dispersed oxides on final microstructures are discussed in some detail.

Original languageEnglish
Pages (from-to)2771-2776
Number of pages6
JournalMaterials Science Forum
Volume426-432
Issue number3
Publication statusPublished - Jan 1 2003
EventThermec 2003 Processing and Manufacturing of Advanced Materials - Madrid, Spain
Duration: Jul 7 2003Jul 11 2003

All Science Journal Classification (ASJC) codes

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

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