Abstract
The Zr-based metallic glass composite containing four kinds of W fibers with different diameters are prepared by infiltration casting method.The diameters of the W fibers are 1000,700,500 and 200μm,respectively.The effect of fiber diameter on the quasi-static and dynamic compressive mechanical properties and deformation behaviors of the composites was investigated.The results show that the quasi-static compressive properties improve with the decrease of the W fiber diameters,which is attributed to the increasing interface area and the size effect of the metallic glass matrix.Under dynamic compressive loading,the strain rate changes with the variation of the W fiber diameter at the same bullet firing pressure.The dynamic compressive strength and strain rate sensitivity exponent of the metallic glass composite with a fiber diameter of 500 μm is the highest among the four W fiber/Zr-based metallic glass composites.
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