TRANSFORMATION BEHAVIOR OF Y//2O//3-PSZ INVESTIGATED BY THERMAL DILATOMETRY.

Noboru Yoshikawa, Hajime Suto

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The transformation temperature decreases with increasing Y//2O//3 content. The equilibrium concentration of t-phase in alloys annealed at 1600 degree C(1873 K), 1700 degree C(1973 K) and 1800 degree C (2073 K) was determined and it was found that the solubility limit of Y//2O//3 in t-phase increased with temperature. The as-annealed PSZ was composed of (t plus c) phases, but the m reversible reaction t transformation took place more easily by cyclic heating. These transformations can proceed isothermally with release of the transformation-induced internal stress by slow cracking. The t yields m transformation is suppressed by rapid cooling but the m yields t transformation is not affected by heating rate.

Original languageEnglish
Pages (from-to)108-113
Number of pages6
JournalNippon Kinzoku Gakkai-si
Volume50
Issue number1
Publication statusPublished - 1986 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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