Microstructural design for high-strain-rate superplastic oxide ceramics

Keijiro Hiraga, Byung Nam Kim, Koji Morita, Tohru S. Suzuki, Yoshio Sakka

研究成果: Review article

20 引用 (Scopus)

抜粋

Factors limiting the strain rate available to superplastic deformation in oxide ceramics are discussed from existing knowledge about high-temperature plastic deformation and cavitation mechanisms. Simultaneously controlling these factors is essential for attaining high-strain-rate superplasticity (HSRS). This is shown in monolithic tetragonal zirconia and composite materials consisting of zirconia, α-alumina and a spinel phase: at strain rates higher than 10-2 s-1, tensile ductility reached 300-600% in the monolithic material and 600-2500% in the composite materials. Post-deformation microstructure indicates that certain secondary phases should be effective in suppressing cavitation damage and thereby enhancing HSRS.

元の言語English
ページ(範囲)191-197
ページ数7
ジャーナルJournal of the Ceramic Society of Japan
113
発行部数1315
DOI
出版物ステータスPublished - 2005 3
外部発表Yes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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