Wang, GangShen, J.Sun, J. F.Huang, Y. J.Zou, JinLu, Z. P.Stachurski, ZbigniewZhou, B. D.2015-12-130022-3093http://hdl.handle.net/1885/81654The superplastic deformation behavior and superplastic forming ability of the Zr41.25Ti13.75Ni10Cu12.5Be22.5 (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.Keywords: Bulk metallic glass (BMG); Nanocrystallization; Newtonian behavior; Supercooled liquids; Crystallization; Elastic moduli; Forming; Nanostructured materials; Strain; Supercooling; Superplasticity; Tensile properties; Metallic glass200510.1016/j.jnoncrysol.2004.11.0062015-12-11