Mg-Ni-(Gd,Nd) bulk metallic glasses with improved glass-forming ability and mechanical properties

被引：10
|
作者：
Yin, J. [1 ]
Yuan, G. Y. [1 ,2 ]
Chu, Z. H. [1 ]
Zhang, J. [1 ]
Ding, W. J. [2 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloys Net Forming, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Metall Matrix Composites, Shanghai 200240, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH | 2009年 / 24卷 / 06期
基金：
中国国家自然科学基金;
关键词：
AMORPHOUS-ALLOYS; CORROSION BEHAVIOR; SHEAR FRACTURE; HIGH-STRENGTH; PLASTICITY; DUCTILITY; NI; TRANSITION; SCIENCE; RATIO;
D O I：
10.1557/JMR.2009.0255
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, we report a new Mg-based glass-forming system of Mg-Ni-(Gd,Nd), which can be produced into glassy rods with maximum diameters of 2-5 mm by copper mold casting. The Mg75Ni15Gd10-x,Nd-x(x = 0-10) BMGs simultaneously possess a high level of glass transition temperatures, high specific strength up to 2.75 x 10(5) Nm/kg, and enhanced malleability with plastic strains over 1%. In particular, the Mg75Ni15Gd5Nd5 BMG with the glass-forming ability (GFA) up to 5 mm, exhibited compressive yield strength over 900 MPa and plastic strain up to 50% without failure for the specimen with an aspect ratio of 0.5. The improved GFA and malleability for the Mg75Ni15Gd10-x Nd-x(x = 0-10) BMGs were discussed, which exhibited their promising potentials for the application as lightweight engineering materials.
引用
收藏
页码：2130 / 2140
页数：11
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