Cavitation damage during high temperature tensile deformation in fine-grained alumina doped with magnesia or zirconia

K. Hiraga, K. Nakano, T. S. Suzuki, Y. Sakka

研究成果: Article査読

19 被引用数 (Scopus)

抄録

For a constant initial grain size of 1.0 μm, damage accumulation proceeds more slowly in a 10-vol%-ZrO2-doped alumina than in a 0.2-wt%-MgO-doped alumina at 1723 K, at an initial strain rate of 1.7 × 10-4 s-1, irrespective of higher tensile flow stress in the former than in the latter. The slower damage accumulation in the ZrO2-doped material can be attributed to the delay both in the formation of cavities larger than the initial grain size and in their growth. The obtained data indicate that the rate of damage accumulation correlates closely to the tensile ductility which is higher in the ZrO2-doped material than in the MgO-doped one under the present tensile conditions.

本文言語English
ページ(範囲)1273-1279
ページ数7
ジャーナルScripta Materialia
39
9
DOI
出版ステータスPublished - 1998 10 5
外部発表はい

ASJC Scopus subject areas

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

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