Recombinant domain movement mechanism in superplastic deformation of TZP ceramics

Kouichi Yasuda, Taku Okamoto, Tadashi Shiota, Yohtaro Matsuo

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

High-temperature tensile tests were repeatedly carried out for a tetragonal zirconia polycrystals (TZP) specimen, and the position vectors of 500 grains were measured by FE-SEM image analysis. The displacement vector map showed that several grains moved to the same direction and a kind of domain was formed; these domains (several micrometer in size) moved in the sea of randomly moving grains; however, these domains were soon constrained by the surrounding sea and disappeared; subsequently, new domains were formed in other places by re-combination of grains in order to continue superplastic deformation. Based on these phenomena, the authors proposed a new deformation mechanism called "Recombinant Domain Movement" in this paper.

Original languageEnglish
Pages (from-to)115-119
Number of pages5
JournalMaterials Science and Engineering A
Volume418
Issue number1-2
DOIs
Publication statusPublished - Feb 25 2006
Externally publishedYes

Fingerprint

Superplastic deformation
Polycrystals
polycrystals
zirconium oxides
Zirconia
ceramics
Image analysis
tensile tests
image analysis
micrometers
Scanning electron microscopy
zirconium oxide
scanning electron microscopy
Temperature

Keywords

  • Deformation mechanism
  • Domain
  • Superplasticity
  • TZP

ASJC Scopus subject areas

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

Cite this

Recombinant domain movement mechanism in superplastic deformation of TZP ceramics. / Yasuda, Kouichi; Okamoto, Taku; Shiota, Tadashi; Matsuo, Yohtaro.

In: Materials Science and Engineering A, Vol. 418, No. 1-2, 25.02.2006, p. 115-119.

Research output: Contribution to journalArticle

Yasuda, Kouichi ; Okamoto, Taku ; Shiota, Tadashi ; Matsuo, Yohtaro. / Recombinant domain movement mechanism in superplastic deformation of TZP ceramics. In: Materials Science and Engineering A. 2006 ; Vol. 418, No. 1-2. pp. 115-119.
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