Knowledge Management System of Institue of Mechanics, CAS
| 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; Wei, BC (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China.
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| Source Publication | Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
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| 2002 | |
| Volume | 334Issue:1-2Pages:307-311 |
| ISSN | 0921-5093 |
| Abstract | 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. |
| Subject Area | 力学 |
| DOI | 10.1016/S0921-5093(01)01893-7 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000177236000044 |
| WOS Keyword | DIFFERENTIAL SCANNING CALORIMETRY ; FE-AL ALLOYS ; SUPERCOOLED LIQUID ; AMORPHOUS-ALLOYS ; CASTING METHOD ; ND ; PHASES |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/17634 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Wei, BC (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China. |
| Recommended Citation 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.,...&Wei, BC .(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. |
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