Micro-forming and surface evaluation of Zr41Ti14Cu12.5Ni10Be22.5 bulk metallic glass

Abstract

Bulk metallic glasses are adequate for micro-forming because of the viscous flow in the supercooled liquid state. The deformation behavior of Zr41Ti14Cu12.5Ni10Be22.5 alloy under compression in the supercooled liquid state were investigated by using DSC and TMA. Based on the deformation behavior, micro-forming process of Zr41Ti14Cu12.5Ni10Be22.5 alloy was designed and carried out. The surface of the deformed specimens were analyzed by SEM, XRD, and AFM. The roughness of the specimen surface exhibited a correlation with the total deformation and a new parameter reflecting roughness evolution of the deformed surface was suggested as the relative comparison among different forming conditions. (c) 2006 Elsevier B.V. All rights reserved.