Dynamic mechanical relaxation in Zr65Ni7Cu18Al10 metallic glass
Source abstract
Abstract
Abstract Dynamic modulus and internal friction of Zr65Ni7Cu18Al10 metallic glass was probed by dynamic mechanical analysis (DMA) technique. The apparent activation energy of main α relaxation is 4.18 eV. Experimental results can be analyzed in the framework of the quasi-point defect (QPD) theory. Current investigations demonstrated that annealing below the glass transition temperature Tg leads to a decrease in loss factor tanδ of Zr65Ni7Cu18Al10 metallic glass. The evolution of loss factor tanδ with annealing time can be well described by the stretched Kohlrausch-Williams-Watts (KWW) exponential equation. The Kohlrausch exponent βaging is 0.43 of Zr65Ni7Cu18Al10 metallic glass annealed at 573 K.
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Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Material Dynamics and Properties · Glass properties and applications
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