Temperature dependence of the thermoplastic formability in bulk metallic glasses

被引：60

作者：

Pitt, E. Bryn ^{[1
]}

Kumar, Golden ^{[1
]}

Schroers, Jan ^{[1
]}

机构：

[1] Yale Univ, Dept Mech Engn & Mat Sci, New Haven, CT 06511 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 110卷 / 04期

基金：

美国国家科学基金会;

关键词：

SUPERCOOLED LIQUID-STATE; CRITICAL COOLING RATE; FORMING LIQUID; VISCOUS-FLOW; AMORPHOUS ALLOY; CRYSTALLIZATION; PD43NI10CU27P20; THERMODYNAMICS; EXTRUSION; KINETICS;

D O I：

10.1063/1.3624666

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependence of the maximum strain a bulk metallic glass (BMG) can undergo in its supercooled liquid state under specified conditions is determined. This formability is measured experimentally over a wide temperature range using Zr35Ti30Cu8.25Be26.75 as an example BMG. When considering five different BMG formers, we found that the formability continuously increases with temperature. This behavior is ubiquitous among BMGs whose crystallization behavior can be described by steady state nucleation and diffusion limited growth. Therefore, in order to maximize the formability during thermoplastic forming of BMGs, the highest processing temperature should be chosen at which crystallization can still be avoided. (C) 2011 American Institute of Physics. [doi:10.1063/1.3624666]

引用

页数：7

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