Effect of Microstructure on Ambient Temperature Fatigue Short Crack-Growth Behavior in Sialon

Abstract

Abstract: The micromechanisms and characteristics of fatigue crack-growth in Sialon ceramics withdifferent microstructures were studied. Under cyclic loading, stress corrosion, wear degradation ofasperities through friction and indentation damage were used to explain the fatigue crack-growthbehavior. The samples of higher content of rod-like β-Sialon grains with larger aspect ratio,showed higher resistance to fatigue crack growth, thus higher reliability under cyclic loads at roomtemperature.

Key words: microstructure, Sialon, fatigue short crack-growth behavior

CLC Number:

TB323

JIANG Dan-Yu,SHI Jian-Lin,LAI Ting-Rong,YAN Dong-Sheng. Effect of Microstructure on Ambient Temperature Fatigue Short Crack-Growth Behavior in Sialon[J]. Journal of Inorganic Materials.

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Effect of Microstructure on Ambient Temperature Fatigue Short Crack-Growth Behavior in Sialon

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