Author/Authors :
Huang، نويسنده , , Jow-Lay and Lin، نويسنده , , Ho-Don and Jeng، نويسنده , , Ching-Tzong and Lii، نويسنده , , Ding-Fwu، نويسنده ,
Abstract :
The crack resistance of Cr3C2/Al2O3 composites was investigated. The indentation/strength technique was used to determine the R-curve behaviors. The small (2 μm) Cr3C2 particles were found to have a better toughening effect than that of large (7 μm) Cr3C2 particles in Cr3C2/Al2O3 composites. The R-curve behaviors in Cr3C2/Al2O3 composites could be attributed to the mechanisms of crack-deflection and crack-branching. Materials exhibiting R-curve behavior also had narrower strength distribution and larger Weibull modulus than those of Griffith materials.
Keywords :
Crack growth resistance , Indentation/strength technique , Weibull modulus , R-curve
