Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Bending Creep and Creep Fracture of Sintered Alumina under High-Temperature

알루미나의 고온 굽힘크리프 및 크리프 파괴

  • 김지환 (포항공과대학교 기계공학과) ;
  • 권영삼 (포항공과대학교 기계공학과) ;
  • 김기태 (포항공과대학교 기계공학과)
  • Published : 1994.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

The creep behavior and creep fracture of sintered alumina at high temperature were investigated under four point flexural test. Steady-state creep behavior was observed at low bending stress and primary creep until fracture was observed at hish bending stress. The loading history of bending stress did not affect on steady-state creep rate. Intergranular fracture was dominant for fracture of alumina at room and high temperature. However, transgranular fracture was dominant on creep of alumina under high temperature by nucleation and growth of microcracks due to residual flaws or cavities in the material.

Keywords

References

  1. Alumina, Processing, Properties, and Application E. Dorre;H. Hubner
  2. Mater. Sci. and Eng. v.71 Applications of High Performance Ceramics in Heat Engine Design R.N. Katz
  3. Deformation-Mechanism Maps, the Plasticity and Creep of Metals and Ceramics H.J. Frost;M.F. Ashby
  4. J. Am. Ceram. Soc. v.74 no.5 Creep and Creep Fracture in Hot-Pressed Alumina A.G. Robertson;D.S. Wilkinson;C.H. Caceres
  5. J. Mater Sci v.21 no.2 High Temerature Mechanical Properties of Single Phase Alumina A.H. Chokshi;J.R. Porter
  6. Mater. Sci. and Technol v.7 no.7 Characteristics of Creep Deformation in Ceramics A.H. Chokshi;T.G. Langdon
  7. Ceram Eng Sci Proc. v.11 no.7-8 Comparison of Tension, Compression, and Flexural Creep for Alumina and Silicon Nitride Ceramics M.K. Ferber;M.G. Jenkins;V.J. Tennery
  8. J Mater. Sci v.21 no.1 Estimation of Power-Law Creep Parameters from Bend Test Data T.J. Chuang
  9. J. Am. Ceram. Soc v.73 no.8 Improved Analysis for Flexual Creep with Application to Sialon Ceramics C.F. Chen;T.J. Chuang
  10. Ceramic Today-Tomorrow's Ceramics A Test Method For Tensile Creep of Structural Ceramics Using Flexure Beams R.F. Krause;T.J. Chuang;P Vincenzini (ed.)
  11. Fracture Mechanics of Ceramics(Vol.7, Composites, Impact, Statistics and High-Temperature Phenomena) Damage Accumulation in Hot Pressed Alumina During Flexure Creep and Anneals in Air A.G. Robertson;D.S. Wilkinson ; R.C. Bradt(ed.);A.G. Evans(ed.);D.P.H. Hasselman(ed.);F.F. Lange(ed.)
  12. J. Am. Ceram. Soc v.74 no.9 Design Data for Engineering Ceramics;A Review of the Flexure Test G.D. Quinn;R.Morrell
  13. J. Am. Ceram. Soc. v.67 no.11 High-Temperature Failure of Polycrystalline Alumina;I, Crack Nucleation B.J. Dalgleish;S M. Johnson;A.G.Evans
  14. J. Mater. Sci. v.21 no.3 Creep and Fracture of a Vitreous-Bonded Aluminium Oxide S.M. Wiederhorn;B.J. Hockey;R.F. Krause, Jr.;K.Kajus
  15. J. of Test and Eval v.19 no.4 Direct Measurements of Displacements in the Inner Roller Span of Four-Point-Bending Creep Tests T.Fett;K. Keller;G. Martin;O.Rosenfelder
  16. J. Am. Ceram. Soc v.73 no.7 High-Temperature Creep and Cavitation of Polycrystalline Aluminum Nitride Z.C. Jou;A.V. Virkar
  17. J. Am. Ceram. Soc v.74 no.5 Damage and Fracture Mechanism During High Temperature Creep in Hot-Pressed Alumina D.S. Wilkinson;C.H. Caceres;A.G. Roberton
  18. J Am. Ceram. Soc. v.76 no.4 Creep Damage Development in Structural Ceramics K.S. Chan;R.A. Page