The Effect of Stress Induced Transforming and Fabricating Residual Stresses on the Fracture Toughness of Mo-Zr02 Sintered Composites

  • Kunio Funami
  • Yuji Muramatsu


To study the influence of residual stress on fracture toughness of Mo-ZrC2 sintered composites,the fracture toughness and residual stress under material fabrication process were examined experimentally. On based of these experimental results,the effect of initial residual stress,and of size and shape of transformation zone of ZrO2 dispersing secondary particles on toughness enhancement was analyzed numerically by finite element method.The toughnes increment of this material may be explained by the contribution of the effect of t-m stress induced phase transformation of ZrQ2 particle and surface residual stress.


Residual Stress Fracture Toughness Transformation Strain Zr02 Content Sintered Material 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Funami,K.,Muramatsu,Y. and Eto,G.,Mechanical Properties and Fracture Toughness of Mo-ZrO2 sintered composites.J.Japan Inst Metals., 1986,50, 834–40Google Scholar
  2. 2.
    McMeeking,R.M. and Evans,A.G.,Mechanics of Transformation Toughening in Brittle Materials.J.Am.Ceram.Sci.,1982,65,242–46CrossRefGoogle Scholar
  3. 3.
    Budiansky,B.,Hutchinson,J.W. and Lambropoulos,J.C.,Continuum Theory of Dilatant Transformation Toughening in Ceramics.Int.J.SolidsStruct.,1983, 19,337–55CrossRefGoogle Scholar
  4. 4.
    Lambropoulos,J.C.,Effect of Nucleation on Transformation Toughening.J.Am. Ceram.Sci.,1986,69,218–22CrossRefGoogle Scholar
  5. 5.
    Kshimoto,K., Aoki,S. and Sakata,M.,Fracture mechanics Parameter for Crack Propagation.Trans.Japan Sci Mech Eng.,1980,46,1049–57CrossRefGoogle Scholar
  6. 6.
    Muramatsu,Y.,Funami,K.,Harada,K. and Hoshimoto,K.,Structure and Mechanical Properties of Mo-ZrO2 Materials Densified by HIP.J.Japan Inst Metals., 1988,52,803-09Google Scholar

Copyright information

© Elsevier Science Publishers Ltd 1989

Authors and Affiliations

  • Kunio Funami
    • 1
  • Yuji Muramatsu
    • 2
  1. 1.Department of Machinery EngineeringChiba Institute of TechnologyTsudanuma Narashino-shi,ChibaJapan
  2. 2.National Research Institute for MetalsMeguro-ku,TokyoJapan

Personalised recommendations