Title of article
Effect of nano-metal particles on the fracture toughness of metal–ceramic composite
Author/Authors
Yingguang Liu، نويسنده , , Jianqiu Zhou، نويسنده , , Tongde Shen، نويسنده ,
Issue Information
ماهنامه با شماره پیاپی سال 2013
Pages
5
From page
67
To page
71
Abstract
A theoretical model is proposed to study the influence of nano-metal particles (NMPs) on the fracture toughness of metal–ceramic composites (MCC). In the framework of the model, the crack tip intersects the grain boundary of the NMPs. Stress concentration at crack tip initiates edge dislocations which makes a shielding effect on the crack and leads to fracture toughness of the MCC. The dependence of critical crack intensity factors on grain size of the NMPs was calculated. The calculation suggested that the existence of the NMPs lead to an increase of critical crack intensity factors by 14%.
Keywords
Grain size , Crack intensity factors , Ceramic-matrix composites , Nano-metals particles
Journal title
Materials and Design
Serial Year
2013
Journal title
Materials and Design
Record number
1074750
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