| Influence of Fe addition on glassy stability of an Al85Ni5Y8Co2 metallic glass with a large supercooled liquid region | |
| H. W. Yang; S. C. Tjong; J. Q. Wang | |
| 2005 | |
| Source Publication | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| ISSN | 0921-5093 |
| Volume | 406Issue:1-2Pages:160-165 |
| Abstract | The effect of Fe additions on glass formation and stability of an amorphous Al85Ni5Y8Co2 alloy with a large supercooled liquid region has been studied using differential scanning calorimetry (DSC), X-ray diffraction (XRD), and transmission electron microscopy (TEM) techniques. It was found that the Fe content significantly affects the primary crystallization kinetics of this alloy, but little on its glass-forming ability (GFA). Interestingly, an Al85Ni5Y6Fe2Co2 glassy alloy, with a wide supercooled liquid region of 24 K and a superior stability against primary crystallization up to 570 K, was synthesized. Its devitrification kinetics appears to be proceeded by two-stage primary reaction over the temperature range of 570-645 K through a continuous process of the nucleation and growth of Al nanocrystals, followed by the concurrence of Al-3(Ni, Fe), Al9Co2 and Al3Y intermetallics. The formation of such a more stable glass due to partial replacement of Y by Fe in Al85Ni5Y8Co2 is proposed to be associated with the amorphous structure and the solute concentration distribution feature. (c) 2005 Elsevier B.V. All rights reserved. |
| description.department | chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. city univ hong kong, dept phys & mat sci, kowloon, hong kong, peoples r china.;wang, jq (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china;jqwang@imr.ac.cn |
| Keyword | Metallic Glasses Devitrification Kinetics Nanocrystals Amorphous-alloys Crystallization Strength |
| URL | 查看原文 |
| WOS ID | WOS:000232565100021 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/35164 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | H. W. Yang,S. C. Tjong,J. Q. Wang. Influence of Fe addition on glassy stability of an Al85Ni5Y8Co2 metallic glass with a large supercooled liquid region[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2005,406(1-2):160-165. |
| APA | H. W. Yang,S. C. Tjong,&J. Q. Wang.(2005).Influence of Fe addition on glassy stability of an Al85Ni5Y8Co2 metallic glass with a large supercooled liquid region.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,406(1-2),160-165. |
| MLA | H. W. Yang,et al."Influence of Fe addition on glassy stability of an Al85Ni5Y8Co2 metallic glass with a large supercooled liquid region".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 406.1-2(2005):160-165. |
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