Thermal stability and instrumented indentation in a Mg60Cu30Y10 bulk metallic glass

被引：20
作者：
Kovács, Z
Castellero, A
Greer, AL
Lendvai, J
Baricco, M
机构：
[1] Univ Turin, Dipartimento Chim, IFM, I-10125 Turin, Italy
[2] Eotvos Lorand Univ, Dept Gen Practice, H-1117 Budapest, Hungary
[3] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 387卷
基金：
匈牙利科学研究基金会;
关键词：
bulk metallic glasses; Mg-Cu-Y; instrumented indentation; serrated flow; shear bands;
D O I：
10.1016/j.msea.2004.03.089
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The crystallisation and mechanical properties of the light alloy, Mg60Cu30Y10 bulk metallic glass (BMG) have been investigated by differential scanning calorimetry and instrumented indentation. Generally, the low-temperature plasticity of BMGs can be improved by partial devitrification to give an ultra-fine crystal structure in the amorphous matrix. From the indentation tests, increases in hardness and elastic modulus were observed after both the first and second stages of crystallisation. Plastic instabilities have been observed in the instrumented-indentation loading curves, even for samples with a significant crystallised fraction. (C) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：1012 / 1017
页数：6
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