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Quasi-static and dynamic deformation behavior of a Ti 48 Zr 20 Nb 12 Cu 5 Be 15 bulk-metallic-glass composite (BMGC) were investigated at cryogenic temperature (77K). Results demonstrate that the composite shows good plasticity at quasi-static deformation, but brittle fracture occurs during dynamic deformation. Compared with quasi-static deformation which is...
The local Avrami exponent is usually used to evaluate nonlinear Kolmogorov–Johnson–Mehl–Avrami (KJMA) plots. But in some phase transformations, a changing kinetic exponent may result from the inappropriate use of kinetic model. A modified kinetic model considering the impingement effect has been introduced to show that when the KJMA equation is inapplicable for kinetic analysis the local Avrami exponent...
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