Cavity formation and growth in a superplastic alumina containing zirconia particles

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

Research output: Contribution to journalConference article

7 Citations (Scopus)


The present study on a tensile-deformed superplastic alumina reveals that the growth of cavities finer than the current grain size (fine cavities) into larger ones (large cavities) is constrained from the surrounding matrix. As a result of the constraint, the density of the large cavities becomes noticeably lower than that of the finer ones and shows non-linear dependence on strain, although the total cavity density, i.e., the sum of the fine and large cavity densities depends linearly on strain. Analysis of cavity size distributions also reveals the formation and growth laws of the large cavities.

Original languageEnglish
Pages (from-to)193-198
Number of pages6
JournalMaterials Science Forum
Publication statusPublished - 2001 Jan 1
Externally publishedYes
EventSuperplasticity in Advanced Materials (ICSAM-2000) - Orlando, FL, United States
Duration: 2000 Aug 12000 Aug 4


  • Alumina
  • Cavity formation
  • Cavity growth
  • Cavity size distribution

ASJC Scopus subject areas

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

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