Microstructure investigation of 13Cr-2Mo ODS steel components obtained by high voltage electric discharge compaction technique

Igor Bogachev, Artem Yudin, Evgeniy Grigoryev, Ivan Chernov, Maxim Staltsov, Oleg Khasanov, Eugene Olevsky

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Abstract

Refractory oxide dispersion strengthened 13Cr-2Mo steel powder was successfully consolidated to near theoretical density using high voltage electric discharge compaction. Cylindrical samples with relative density from 90% to 97% and dimensions of 10 mm in diameter and 10-15mmin height were obtained. Consolidation conditions such as pressure and voltage were varied in some ranges to determine the optimal compaction regime. Three different concentrations of yttria were used to identify its effect on the properties of the samples. It is shown that the utilized ultra-rapid consolidation process in combination with high transmitted energy allows obtaining high density compacts, retaining the initial structure with minimal grain growth. The experimental results indicate some heterogeneity of the structure which may occur in the external layers of the tested samples due to various thermal and electromagnetic in-processing effects. The choice of the optimal parameters of the consolidation enables obtaining samples of acceptable quality.

Original languageEnglish
Pages (from-to)7342-7353
Number of pages12
JournalMaterials
Volume8
Issue number11
DOIs
Publication statusPublished - 2015

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Keywords

  • Field-assisted
  • Oxide dispersion strengthening
  • Powder consolidation
  • Steel

ASJC Scopus subject areas

  • Materials Science(all)

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