Influence of Fe addition on glassy stability of an Al85Ni5Y8Co2 metallic glass with a large supercooled liquid region

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	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
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	406 期号:1-2 页码:160-165
摘要	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.
部门归属	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
关键词	Metallic Glasses Devitrification Kinetics Nanocrystals Amorphous-alloys Crystallization Strength
URL	查看原文
WOS记录号	WOS:000232565100021
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35164
专题	中国科学院金属研究所
推荐引用方式 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.