Grain motion statistics of polycrystalline zirconia during superplastic deformation

Taku Okamoto, Kouichi Yasuda, Tadashi Shiota

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study focuses on grain motion in tetragonal zirconia polycrystal ceramics during superplastic deformation. Since grains were found to move in a zigzag motion in previous experiments, the present study attempts to analyze the grain motion based on random walk theory. The analysis shows that the zigzag motion results from changes in constraint by surrounding grains. The constraint is spatially distributed at first, and its distribution gradually becomes uniform as superplastic deformation advances.

Original languageEnglish
Pages (from-to)253-255
Number of pages3
JournalScripta Materialia
Volume64
Issue number3
DOIs
Publication statusPublished - Feb 1 2011
Externally publishedYes

Keywords

  • Ceramics
  • High-temperature deformation
  • Kinetics
  • Superplasticity
  • TZP

ASJC Scopus subject areas

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

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