Strong composition-dependence on glass-forming ability in Ni-(Ti,Zr)-Si pseudo-ternary alloys

被引：2
|
作者：
Yang, H.
Wang, J. Q.
Li, Y.
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
[2] Natl Univ Singapore, Fac Engn, Dept Mat Sci & Engn, Singapore 117576, Singapore
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 422卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
metallic glasses; Ni-based alloy; casting; thermal analysis;
D O I：
10.1016/j.jallcom.2005.11.055
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：
The glass formation in Ni-(Ti,Zr)-Si pseudo-ternary alloys was studied. For suction casting, by carefully adjusting the alloy composition and studying the microstructure changes, the best glass-forming alloy with a 2 rum diameter is pinpointed in a narrow composition region of 57.5-58.5 at.% Ni, 36.5-38.5 at.% (Ti + Zr) and 5-5.5 at.% Si. The main competing crystalline phases, identified by XRD and SEM, were Ni-10(Zr,Ti)(7), Ni(Ti,Zr) and an unidentified Si-containing phase. Our results indicate a clear need for monitoring the microstructure change in the cross section of the ingots to locate the best glass-forming alloys. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：86 / 91
页数：6
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