Improvement of glass-forming ability and phase separation in Cu-Ti-rich Cu-Ti-Zr-Ni-Si bulk metallic glasses

被引：15
|
作者：
Park, E. S. [1 ]
Chang, H. J. [2 ]
Kim, D. H. [3 ]
机构：
[1] Seoul Natl Univ, Dept Mat Sci & Engn, Res Inst Adv Mat, Seoul 151744, South Korea
[2] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA
[3] Yonsei Univ, Dept Met Engn, Ctr Noncrystalline Mat, Seoul 120749, South Korea
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 504卷
关键词：
Metallic glass; Liquid quenching; Phase separation; AL-CO ALLOY; PLASTICITY; ENHANCEMENT; COMPOSITES; MICROSTRUCTURE; BEHAVIOR; NB;
D O I：
10.1016/j.jallcom.2010.04.129
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：
Present study reports improvement of glass-forming ability (GFA) and phase separation in Cu-Ti-rich Cu-Ti-Zr-Ni-Si bulk metallic glasses (BMGs) by tailoring the constituent elements. The MA of metalloid element, Sn having relatively large negative enthalpy of mixing can lead to improve GFA (up to 8 mm in diameter) as well as thermal stability (up to Delta T-x = 48 K) by optimizing the substitution element. And the addition of elements having relatively large positive enthalpy of mixing (partial substitution of Zr or Ti with Y) can lead to the liquid state phase separation in Cu-Ti-Sn-Zr-Ni-Si BMG, although the addition lead to drastic deterioration of the GFA. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：S27 / S30
页数：4
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