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The maximum strength of monolithic bulk metallic glasses (BMGs) at 77K is predicted according to the proposed equation, σmax.77=55ρ0MΔTg+Δσ. For the dendrite-reinforced BMG–matrix composites, a distinctly increased maximum strength is seen; however, a ductile-to-brittle transition seems to be present when lowering the temperature to 77K, which is caused by the ductile-to-brittle transition of the...
Compared to its mechanical behavior at 298K, the fracture strain of a Cu 46 Zr 46 Al 8 bulk-metallic glass is slightly increased, but the maximum strength is distinctly increased by 13.3% at 77K. At 77K, the serrations in the stress–strain curve disappear. Based on the calculation of the temperature rise within the shear bands and the heat conduction in the heat-affected zones,...
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