Glass Transition and Thermal Stability of Hard Magnetic Bulk NdAlFeCo Metallic Glass

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	Glass Transition and Thermal Stability of Hard Magnetic Bulk NdAlFeCo Metallic Glass
	Wei BC(魏炳忱); Wang WH(汪卫华); Xia L(夏雷); Zhang Z; Zhao DQ; Pan MX
刊名	Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
	2002
卷号	334 期号:1-2 页码:307-311
ISSN号	0921-5093
通讯作者	Wei, BC (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China.
英文摘要	Glass transition and thermal stability of bulk Nd60Al10Fe20Co10 metallic glass were investigated by means of dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electronic microscopy (SEM). The glass transition temperature, not revealed by DSC, is alternatively determined by DMTA via storage modulus E' and loss modulus E" measurement to be 498 K at a heating rate of 0.167 K s (-1). The calculated reduced glass transition temperature (T-g/T-m) is 0.63. The large value of T-g/T-m of this alloy is consistent with its good glass-forming ability. The crystallization process of the metallic glass is concluded as follows: amorphous --> amorphous + metastable FeNdAl phase --> amorphous + primary delta-FeNdAl phase --> primary delta-phase + eutectic delta-phase + Nd3Al + Nd3Co. The appearance of hard magnetism in this alloy is ascribed to the presence of amorphous phase with highly relaxed structure. The hard magnetism disappeared after the eutectic crystallization of the amorphous phase. (C) 2002 Elsevier Science B.V. All rights reserved.
学科主题	力学
类目[WOS]	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
关键词[WOS]	DIFFERENTIAL SCANNING CALORIMETRY ; FE-AL ALLOYS ; SUPERCOOLED LIQUID ; AMORPHOUS-ALLOYS ; CASTING METHOD ; ND ; PHASES
收录类别	SCI
语种	英语
WOS记录号	WOS:000177236000044
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/17634]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Wei BC,Wang WH,Xia L,et al. Glass Transition and Thermal Stability of Hard Magnetic Bulk NdAlFeCo Metallic Glass[J]. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,2002,334(1-2):307-311.
APA	魏炳忱,汪卫华,夏雷,Zhang Z,Zhao DQ,&Pan MX.(2002).Glass Transition and Thermal Stability of Hard Magnetic Bulk NdAlFeCo Metallic Glass.Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,334(1-2),307-311.
MLA	魏炳忱,et al."Glass Transition and Thermal Stability of Hard Magnetic Bulk NdAlFeCo Metallic Glass".Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 334.1-2(2002):307-311.