Superplastic behavior of a Zr-10Al-5Ti-17.9Cu-14.6Ni metallic glass in the supercooled liquid region

被引：85

作者：

Nieh, TG

Mukai, T

Liu, CT

Wadsworth, J

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[2] Osaka Municipal Tech Res Inst, Joto Ku, Osaka 5368553, Japan

[3] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA

来源：

SCRIPTA MATERIALIA | 1999年 / 40卷 / 09期

关键词：

D O I：

10.1016/S1359-6462(99)00071-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The deformation behavior of a Zr-10Al-5Ti-17.9Cu-14.6Ni metallic glass was characterized in the supercooled region. The alloy was observed to exhibit a large tensile elongation in the supercooled region with a maximum tensile elongation of over 600% at 425-440 °C at a high strain rate of 10-2 s-1. The superplastic properties were found to be very sensitive to testing temperature. The alloy did not behave like a Newtonian fluid and the Non-Newtonian behavior of the alloys was caused by the concurrent crystallization of the amorphous structure during deformation. At temperatures above the crystallization temperature, the alloy exhibited limited ductility as a result of poor strain accomodation at the grain triple junctions.

引用

页码：1021 / 1027

页数：7

共 19 条

[1] PLASTIC-DEFORMATION IN METALLIC GLASSES [J].