Small fatigue crack propagation in Si3N4 at high temperature

Yukio Miyashita, Zainuddin Sajuri, Shijie Zhu, Yoshiharu Mutoh

Research output: Contribution to journalArticle

Abstract

Behaviors of fatigue crack propagation in Si3N4 at 1300°C in air were investigated. The results of fatigue tests showed that a cyclic fatigue crack initiated from a precrack introduced by the indentation method when the precrack was above 150μm in length, but from inherent flaws when the length of precrack was below 150μm. The fatigue process at 1300°C was predominantly time dependent in the present testing condition. The crack growth rate for short crack was higher than that for long through thickness crack. Difference of crack growth behavior between short and long cracks will certainly result from difference in stress shielding effect due to bridging.

Original languageEnglish
Pages (from-to)1137-1142
Number of pages6
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume47
Issue number11
Publication statusPublished - Nov 1998
Externally publishedYes

Fingerprint

crack propagation
Fatigue crack propagation
cracks
Cracks
short cracks
Crack propagation
Fatigue of materials
Indentation
Shielding
Temperature
fatigue tests
Defects
indentation
Testing
shielding
Air
silicon nitride
air
defects

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Metals and Alloys
  • Polymers and Plastics

Cite this

Small fatigue crack propagation in Si3N4 at high temperature. / Miyashita, Yukio; Sajuri, Zainuddin; Zhu, Shijie; Mutoh, Yoshiharu.

In: Zairyo/Journal of the Society of Materials Science, Japan, Vol. 47, No. 11, 11.1998, p. 1137-1142.

Research output: Contribution to journalArticle

Miyashita, Yukio ; Sajuri, Zainuddin ; Zhu, Shijie ; Mutoh, Yoshiharu. / Small fatigue crack propagation in Si3N4 at high temperature. In: Zairyo/Journal of the Society of Materials Science, Japan. 1998 ; Vol. 47, No. 11. pp. 1137-1142.
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