Critical cooling rate and thermal stability of Fe-Co-Zr-Y-Cr-Mo-B amorphous alloy

被引：34
|
作者：
Chen, QJ
Fan, HB
Shen, J [1 ]
Sun, JF
Lu, ZP
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Oak Ridge Natl Lab, Met & Ceram Div, Oak Ridge, TN 37831 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 407卷 / 1-2期
关键词：
bulk metallic glasses; glass-forming ability; thermal stability; critical cooling rates; activation energy;
D O I：
10.1016/j.jallcom.2005.06.031
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 critical cooling rate of the Fe61Co5Zr8Y2Cr2Mo7B15 bulk amorphous alloy was determined to be 37 K/s, providing an indication that this alloy has a high glass-forming ability. The non-isothermal crystallization kinetics of the Fe61Co5Zr8Y2Cr2Mo7B15 amorphous alloy prepared by using the copper-mold casting or melt-spinning were also investigated. It is found that the activation energies in the non-isothermal crystallization process show a strong dependence on the cooling rates for glass formation, revealing that the melt-spun amorphous alloy has a higher thermal stability. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：125 / 128
页数：4
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