A development of Ni-based alloys with enhanced plasticity

被引：120
作者：
Lee, MH
Lee, JY
Bae, DH
Kim, WT
Sordelet, DJ
Kim, DH
机构：
[1] Yonsei Univ, Dept Met Engn, Ctr Non Crystalline Mat, Seoul, South Korea
[2] Chongju Univ, Div Appl Sci, Chonju, South Korea
[3] Iowa State Univ, Ames Lab, Ames, IA 50014 USA
来源：
INTERMETALLICS | 2004年 / 12卷 / 10-11期
关键词：
composites; glasses; metallic; plastic deformation mechanisms; extrusion;
D O I：
10.1016/j.intermet.2004.04.027
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：
Enhancement of plasticity in Ni-based injection cast bulk metallic glasses (BMGs) and metallic glass matrix composites (MGMCs) has been investigated. The injection-cast Ni59Zr16Ti13Si3Sn2Nb7 BMG showed a significantly improved plastic region to failure of 6.5%, as compared to that of the injection-cast Ni59Zr20Ti16Si2Sn3 BMG of 2%. The Ni59Zr20Ti16Si2Sn3 MGMC containing brass-fibers shows macroscopic plasticity after yielding, and the level of plastic strain increased to around 2% with increasing brass content up to 40 vol.%, while monolithic warm-extruded Ni59Zr20Ti16Si2Sn3 BMG show no plastic deformation region. Present study shows that the plasticity of BMG can be improved by selecting proper BMG alloy composition or by introducing ductile reinforcing phase in the BMG matrix. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1133 / 1137
页数：5
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