Plane bending fatigue of alumina fiber-reinforced aluminum composites at temperatures between 295K and 673K.
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To clarify the fatigue properties of fiber-reinforced metals, 4-point bending tests and plane bending fatigue tests were carried out on Al2O3 fiber/Al composites at temperatures between 295K and 673K. The behavior of elastic and plastic deformation of this composites was shown by stress-strain curves in the bending tests to be closely associated with that of the matrix. In the cyclic bending stress, stress-strain curves of the loading-unloading tests were accompanied by plastic strain within the ranges which depended on the maximum bending stress and the testing temperature. In the fatigue tests, the relationship between the plastic strain range and fatigue life was expressed well by the Coffin-Manson relation. Microstructural observations suggest that the cyclic plastic deformation in the matrix is a dominating factor in the properties of fatigue for this composites.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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