Abstract
Glasses may be formed in two composition ranges: 33–42 and 60–76 at.% Zr. The crystallisation temperatures ( T x), activation energies ( Q x), crystallisation morphologies, densities, Young's moduli and peak in the X-ray diffraction pattern ( Q p) are reported as a function of composition. T x, Q x and Q p do not interpolate smoothly between the two composition ranges. Maximum thermal stability occurs at 36 at.% Zr, well away from the value predicted by the free electron approach of Nagel and Tauc. The glasses are denser than would be expected from a simple dense random packing of hard spheres. Some implications for the structure of all-metal glasses are discussed.
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