Abstract
The superplastic deformation behavior and superplastic forming ability of the Zr 41.25Ti 13.75Ni 10Cu 12.5Be 22.5 (at.%) bulk metallic glass (BMG) in the supercooled liquid region were investigated. The isothermal tensile results indicate that the BMG exhibits a Newtonian behavior at low strain rates but a non-Newtonian behavior at high-strain rates in the initial deformation stage. The maximum elongation reaches as high as 1624% at 656 K, and nanocrystallization was found to occur during the deformation process. Based on the analysis on tensile deformation, a gear-like micropart is successfully die-forged via a superplastic forging process, demonstrating that the BMG has excellent workability in the supercooled liquid region.
Original language | English |
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Pages (from-to) | 209-217 |
Number of pages | 9 |
Journal | Journal of Non-Crystalline Solids |
Volume | 351 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Feb 2005 |