High-strain-rate superplasticity of Zr65Al10Ni10Cu15 sheet fabricated by squeeze casting method

被引：13

作者：

Kim, WJ

Sa, YK

Lee, JB

Jeong, HG

机构：

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

[2] Korea Inst Ind Technol, Mfg Proc Res Ctr, Digital Prod Proc Team, Inchon 463130, South Korea

来源：

INTERMETALLICS | 2006年 / 14卷 / 04期

关键词：

nanostructured intermetallics (including preparation methods); glasses; metallic; mechanical properties at high temperatures; superplastic behavior; casting (including segregation);

D O I：

10.1016/j.intermet.2005.07.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The Zr(65)Al(10)Ni(10)Cu(15) alloy sheet produced by squeeze copper-mold casting method exhibited excellent superplasticity (a maximum elongation of 1350%) at a relatively high strain rate (2 X 10(-2)s(-1)) at 696 K. This achievement was made despite the occurrence of crystallization in the middle of deformation. Time for the onset of strain hardening could be related to the T.T.T. diagram for crystallization. Effect of holding time on flow stress was examined. As the holding time was longer, strain hardening took place earlier and the resulted fracture strain was smaller. Bulging test showed that the Zr(65)Al(10)Ni(10)Cu(15) alloy sheet could be deformed to near-net-shape by avoiding crystallization when fast heating rate and short holding time were applied. (c) 2005 Published by Elsevier Ltd.

引用

页码：377 / 381

页数：5

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