발간논문

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Vol.32, No.12, 1566 ~ 1572, 1994
Title
The Fracture Toughness of Sintered WC - Co Alloys
홍준표 Joon Pyo Hong
Abstract
On the basis of microscopic observations of the fracture process, the material is modelled as a homogeneous binder phase containing pre-existing discontinuous cracks. Application of linear elastic fracture mechanics gives K_(IC)=[α/βEσ_Yλ_c/d+λ_cλ_c]^½ where α and β are constants, E and σ_Y are the elastic modulus and in situ yield strength, respectively, of the binder phase, λ_c is the binder true mean free path, and d is the mean intercept length of the carbide particles. Fair agreement is shown with published fracture toughness data.
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