Improved mechanical behavior of Cu-Ti-based bulk metallic glass by in situ formation of nanoscale precipitates

被引:161
作者
Calin, M [1 ]
Eckert, J [1 ]
Schultz, L [1 ]
机构
[1] IFW Dresden, Inst Metall Werkstoffe, D-01171 Dresden, Germany
关键词
casting; bulk metallic glasses; nanocomposites; mechanical properties;
D O I
10.1016/S1359-6462(02)00560-2
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The mechanical properties of Cu47Ti34Zr11Ni8, Cu47Ti33Zr11Ni8Fe1, and Cu47Ti33Zr11Ni8Si1 bulk metallic glasses prepared by copper mold casting are investigated. Room temperature compression tests reveal fracture strengths above 2000 MPa, Young's moduli around 100 GPa and elastic strains slightly exceeding 2.0%. Only Cu47Ti33Zr11Ni8Si1 exhibits distinct plastic strain due to a unique composite microstructure with in situ formed nanoscale precipitates in the glassy matrix. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:653 / 658
页数:6
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