Superplastic gas pressure forming of Zr65Al10Ni10Cu15 metallic glass sheets fabricated by squeeze mold casting

被引：19

作者：

Kim, W. J.

Lee, J. B.

Jeong, H. G.

机构：

[1] Hongik Univ, Dept Mat Sci & Engn, Seoul 121791, South Korea

[2] KITECH, Digital Prod Proc Team, Mfg Proc Res Ctr, Inchon 463130, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 428卷 / 1-2期

关键词：

gas pressure forming; high temperature deformation; metallic glasses; superplasticity; crystallization;

D O I：

10.1016/j.msea.2006.05.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Superplastic gas pressure formability of the Zr65Al10Ni10Cu15 bulk metallic glass (BMG) sheets was examined. Fabrication of large surface BMG sheets with fully amorphous structure and development of a special gas-blow-forming setup where oxidation and crystallization could be avoided during sample heating and forming were essential for this purpose. The sheets were produced by squeeze mold casting. The optimum pressure-time curve for formation of a hemisphere with a diameter of 22 mm was determined based on the analysis by finite element method and the experimental data obtained from tensile tests at 696 K for different strain rates. Gas pressure forming could be completed within 120 s as predicted by the FEM without introducing crystallization in any part of the final product. (c) 2006 Published by Elsevier B.V.

引用

页码：205 / 210

页数：6

共 12 条

[1] Microstructure controlled shear band pattern formation and enhanced plasticity of bulk metallic glasses containing in situ formed ductile phase dendrite dispersions [J].