Paper Title:
Micromechanical Strength of Particle in Composite Ceramic with Partial Debonding Interphase
  Abstract

The four-phase model is used to predict the strength of particles in composite ceramic with partial debonding interphase. Firstly the external strain of three-phase cell is determined. Based on the disturbance strain tensor of three-phase cell, the micromechanical stress field of the particle is obtained. Then based on the generalized thermodynamic force of the particle in damage process, the damage equivalent stress of the particle in the three-phase cell can be calculated. As the damage equivalent stress is equal to the ultimate stress of the particle, the micromechanical strength of particles in composite ceramic with partial debonding interphase is obtained. Finally, For Al2O3-ZrO2 composite ceramic with partial debonding interphase, the variations of the micromechanical strength of particles for different orientation angle and different particle diameter are analyzed. The result shows that the micromechanical strength of particles is determined by the 50° orientation three phase cell, and has obvious size dependence. The micromechanical strength of particle will decrease when the particle diameter increase.

  Info
Periodical
Advanced Materials Research (Volumes 146-147)
Edited by
Sihai Jiao, Zhengyi Jiang and Jinglong Bu
Pages
366-369
DOI
10.4028/www.scientific.net/AMR.146-147.366
Citation
X. H. Ni, X. Q. Liu, B. H. Han, G. H. Zhong, L. Zhao, "Micromechanical Strength of Particle in Composite Ceramic with Partial Debonding Interphase", Advanced Materials Research, Vols. 146-147, pp. 366-369, 2011
Online since
October 2010
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