Temperature Effect on Deformation and Fracture Behaviors of ZrO2/Ni Composite Materials

Tetsuo Ogawa, Kazuo Arakawa, Kiyoshi Takahashi, Hiromichi Takebe, Kenji Morinaga

Research output: Contribution to journalArticle

Abstract

Zirconia-nickel composite materials were fabricated by powder processing technique and pressureless sintering. A tensile testing machine with a scanning electron microscope was utilized to study the deformation and fracture behaviors of the materials. Tensile tests were performed on dumbbell type specimens in vacuum at temperatures up to 800°C. Stress-strain relationships were determined for the composites as functions of temperature and volume fraction of ZrO2. The result showed that both the tensile strength and elongation to fracture decreased as the test temperature increased. It was also found that the strength increased with increasing volume fraction of ZrO2 up to 50%. To understand such effects, the deformation and fracture behaviors were investigated from microscopic view points through in-situ observation of the specimen surface and the fracture surface examination.

Original languageEnglish
Pages (from-to)1463-1468
Number of pages6
JournalJournal of the Society of Materials Science, Japan
Volume43
Issue number494
DOIs
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

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

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