Inherent Relationship between Microstructure Parameters and Anti-impact Strength of Eutectic Composite Ceramic

被引：0

作者：

Ni Xinhua ^{[1
,2
]}

Yu Jinfeng ^{[1
]}

Liu Xiequan ^{[2
]}

Du Zhihong ^{[1
]}

Xu Da ^{[3
]}

机构：

[1] Army Engn Univ, Shijiazhuang Campus, Shijiazhuang 050003, Hebei, Peoples R China

[2] Army Infantry Coll, Nanchang 330103, Jiangxi, Peoples R China

[3] 71901 Troops PLA, Liaocheng 252000, Shandong, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2019年 / 48卷 / 09期

基金：

中国国家自然科学基金;

关键词：

interface defects; anti-impact strength; eutectic composite ceramic; micromechanical strength; dynamic destruction criterion; METAL/CERAMIC COMPOSITES; CRACK; INCLUSION;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The inherent relationship between the microstructure parameters and anti-impact strength is established by micromechanical strength and dynamic destruction criterion of eutectic composite ceramic. Firstly, in line with the microstructure characteristic of eutectic composite ceramic, the effective stress field of composite ceramic is computed by the interaction direct derivative estimate and sufficiently simplified calculation method. Secondly, according to equivalent inclusion method and Griffith micro-crack propagation theory, the micromechanical strength of eutectic ceramic composite is predicted. Thirdly, the dynamic destruction criterion of the comminuted zone is built by the unified pressure shear criterion. Finally, on account of the dynamic destruction criterion which is associative with microstructure, the calculated mode of anti-impact strength is obtained. The influence of microstructure parameters on anti-impact strength is quantitatively analyzed. Results show that decrease in interface defect size among eutectic grains and increase in eutectic grain stiffness will increase anti-impact strength.

引用

页码：2808 / 2814

页数：7