Homogeneous deformation of Ti41 5Cu37 5Ni7 5Zr2 5Hf5Sn5Si1 bulk metallic glass in the supercooled liquid region

被引：31

作者：

Mei, J. N. ^{[1
,2
,3
]}

Soubeyroux, J. L. ^{[2
]}

Blandin, J. J. ^{[3
]}

Li, J. S. ^{[1
]}

Kou, H. C. ^{[1
]}

Fu, H. Z. ^{[1
]}

Zhou, L. ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

[2] CRETA CNRS Grenoble, Inst Neel, F-38042 Grenoble 9, France

[3] CNRS, Grenoble INP, SIMAP GPM2, F-38402 St Martin Dheres, France

来源：

INTERMETALLICS | 2011年 / 19卷 / 01期

基金：

中国国家自然科学基金;

关键词：

metallic glass; deformation map; mechanical properties at high temperatures; superplastic behavior; MECHANICAL-PROPERTIES; BEHAVIOR; ALLOY; FLOW; SUPERPLASTICITY; FORMABILITY; TRANSITION; PLASTICITY; EXTRUSION; SCALE;

D O I：

10.1016/j.intermet.2010.09.005

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 homogeneous deformation behavior of Ti41 5Cu37 5Ni7 5Zr2 5Hf5Sn5Si1 BMG has been investigated by compression tests The results show that its high-temperature deformation behavior is strongly dependent on strain rate and temperature and there exists a transition from non-Newtonian flow to Newtonian flow with decrease in strain rate which can be explained based on the transition state theory In addition this alloy can reach a large compressive strain than 08 at high strain rate however the much higher flow stress and lower value of S parameter compared with typical BMGs indicates its worse formability in the SLR. A beneficial domain (temperature and strain rate) for optimum hot workability of this alloy has been roughly located by constructing the power dissipation efficiency map where the power dissipation efficiency is larger than 0 8 (C) 2010 Elsevier Ltd All rights reserved

引用

页码：48 / 53

页数：6

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