Superplasticity and superplastic forming ability of a Zr-Ti-Ni-Cu-Be bulk metallic glass in the supercooled liquid recgion


Autoria(s): Wang, G; Shen, J; Sun, JF; Huang, YJ; Zou, J; Lu, ZP; Stachurski, ZH; Zhou, BD
Data(s)

01/01/2005

Resumo

The 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 (hat the BMG exhibits a Newtonian behavior at low strain rates but a non-Newtonian behavior at hiqh-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 cm the analysis on tensile deformation. a gear-like micropart is successfully die-forged via a superplastic forgings process. demonstrating that the BMG has excellent workability in the supercooled liquid region. (C) 2004 Elsevier B.V. All rights reserved.

Identificador

http://espace.library.uq.edu.au/view/UQ:71580

Idioma(s)

eng

Publicador

Elsevier Science BV

Palavras-Chave #Materials Science, Ceramics #Materials Science, Multidisciplinary #Deformation-behavior #Amorphous Alloy #Region #Transition #Viscosity #Curves #Flow #C1 #291499 Materials Engineering not elsewhere classified #291804 Nanotechnology #291702 Optical and Photonic Systems #780199 Other
Tipo

Journal Article