Abstract
It has been required to determine precise mechanical and physical properties of cemented carbides for their extensive applications. This paper presents the results of fatigue tests on several WC-Co cemented carbides. It is generally recognized that the data of fatigue test on hard materials are widely scattered, consequently, it is desirable to represent them statistically. The present authors obtained the most probable S-N equations and computed the S-N-P (P: probability of fracture) curves for each WC-Co cemented carbide. The observation of the fracture surface, coercive force measurement and X-ray diffraction study were made in order to study the fatigue mechanism and the results are briefly discussed.
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