Glass-forming ability and thermal stability of Nd70-xFe20Al10Yx alloys

被引：21
作者：
Qiu, KQ
Zhang, HF
Wang, AM
Ding, BZ
Hu, ZQ
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Liaoning Inst Technol, Jinzhou 121001, Peoples R China
来源：
ACTA MATERIALIA | 2002年 / 50卷 / 14期
关键词：
glass-forming ability; Nd70-xFe20Al10Yx metallic glasses; magnetic properties;
D O I：
10.1016/S1359-6454(02)00156-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The glass-forming ability (GFA) and thermal stability of Nd70-xFe20Al10Yx (0less than or equal toxless than or equal to15) alloys produced by melt spinning and copper-mold casting have been investigated. Ribbon samples in the composition range show a fully amorphous structure. Except Y=5 at.%, bulk amorphous alloys at least 2 mm in diameter were obtained. Both the amorphous ribbon and the bulk cylinder for the Nd55Fe20Al10Y15 alloy show a distinct glass transition temperature and a wide supercooled liquid region before crystallization. It is suggested to use a new parameter to characterize both the GFA and the thermal stability of Nd-Fe-Al-Y alloys, showing that Nd60Fe20Al10Y10 alloy is the best one both in GFA and thermal stability. The remanence (J(r)), magnetization (J(1500)), and coercivity (H-c) for the as-cast Nd70-xFe20Al10Yx amorphous cylinders depend strongly on the composition. The enhanced GFA and thermal stability as well as the reduction of magnetic properties are discussed. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
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收藏
页码：3567 / 3578
页数：12
相关论文
共 42 条
[1]  
BOETTINGER WJ, 1982, RAPIDLY SOLIDIFIED A, P99
[2]   THERMODYNAMIC CONSIDERATIONS ON FORMATION AND STABILITY OF METALLIC GLASSES [J].
CHEN, HS .
ACTA METALLURGICA, 1974, 22 (12) :1505-1511
[3]  
Christian J.W., 1975, THEORY TRANSFORMATIO, P418
[4]   ATOMIC SIZE EFFECT ON THE FORMABILITY OF METALLIC GLASSES [J].
EGAMI, T ;
WASEDA, Y .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1984, 64 (1-2) :113-134
[5]   Glass-forming ability of RE-Al-TM alloys (RE = Sm, Y; TM = Fe, Co, Cu) [J].
Fan, GJ ;
Löser, W ;
Roth, S ;
Eckert, J .
ACTA MATERIALIA, 2000, 48 (15) :3823-3831
[6]   Magnetic properties of cast Nd60-xFe20Al10Co10Cux alloys [J].
Fan, GJ ;
Löser, W ;
Roth, S ;
Eckert, J ;
Schultz, L .
APPLIED PHYSICS LETTERS, 1999, 75 (19) :2984-2986
[7]   Role of atomic size on glass formability and thermal stability of Al-based amorphous alloys [J].
Guo, FQ ;
Enouf, S ;
Shiflet, G ;
Poon, J .
MATERIALS TRANSACTIONS JIM, 2000, 41 (11) :1406-1409
[8]   FORMATION OF BULK METALLIC GLASSES IN NEODYMIUM-BASED ALLOYS [J].
HE, Y ;
PRICE, CE ;
POON, SJ ;
SHIFLET, GJ .
PHILOSOPHICAL MAGAZINE LETTERS, 1994, 70 (06) :371-377
[9]   R2FE14B MATERIALS - INTRINSIC-PROPERTIES AND TECHNOLOGICAL ASPECTS [J].
HERBST, JF .
REVIEWS OF MODERN PHYSICS, 1991, 63 (04) :819-898
[10]   NONEQUILIBRIUM SOLIDIFICATION OF UNDERCOOLED METALLIC MELTS [J].
HERLACH, DM .
MATERIALS SCIENCE & ENGINEERING R-REPORTS, 1994, 12 (4-5) :177-272
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