Abstract
The mechanical behavior of commercially pure magnesium reinforced with FP aluminum oxide fibers has been studied as a function of fiber fraction and orientation. Test specimens included material of two different volume fractions of fiber and four different fiber orientations. Axial properties were dependent on the fiber content and generally followed the rule of mixtures. Of the off-axis properties, only the elastic modulus exhibited a significant dependence on fiber content. Off-axis loading resulted in large reductions in both the tensile and fatigue properties. The reductions coincided with a change in fracture morphology from fracture across fibers during axial loading to fracture along the fiber direction for off-axis loading. A weak fiber/matrix interface was found to be responsible for the drop in tensile properties, and a combination of a weak matrix and a weak fiber/matrix interface were responsible for the reduced fatigue resistance.
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Hack, J.E., Page, R.A. & Leverant, G.R. Tensile and Fatigue Behavior of Aluminum Oxide Fiber Reinforced Magnesium Composites: Part I. Fiber Fraction and Orientation. Metall Trans A 15, 1389–1396 (1984). https://doi.org/10.1007/BF02648568
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DOI: https://doi.org/10.1007/BF02648568