Crystallization behaviour and thermal stability of two aluminium-based metallic glass powder materials

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	Crystallization behaviour and thermal stability of two aluminium-based metallic glass powder materials
	X. P. Li; M. Yan; B. J. Yang; J. Q. Wang; G. B. Schaffer; M. Qian
	2011
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	530 页码:432-439
摘要	The crystallization behaviour and thermal stability of two Al-based metallic glass powder materials, Al(85)Ni(5)Y(6)Co(2)Fe(2) and Al(86)Ni(6)Y(4.5)CO(2)La(1.5), have been investigated using differential scanning calorimetry (DSC), X-ray diffraction (XRD) and electron microscopy. Both alloy powders show a distinct three-stage crystallization process with a similar gap of similar to 75 K between the onset crystallization temperature (T(x)) and the second crystallization temperature. Crystallization occurs by the precipitation and growth of fcc-Al, without intermetallic formation. The apparent activation energy for each stage of crystallization was determined from DSC analyses and the phases resulting from each crystallization stage were identified by XRD and electron microscopy. The critical cooling rate for each alloy powder was calculated from the DSC data. These results are necessary to inform the consolidation of amorphous powder particles of Al(85)Ni(5)Y(6)Co(2)Fe(2) or Al(86)Ni(6)Y(4.5)CO(2)La(1.5) into thick (>1 mm) metallic glass components. (C) 2011 Elsevier B.V. All rights reserved.
部门归属	[yang, b. j.; wang, j. q.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [li, x. p.; yan, m.; schaffer, g. b.; qian, m.] univ queensland, sch mech & min engn, arc ctr excellence design light met, brisbane, qld 4072, australia.;wang, jq (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;jqwang@imr.ac.cn ma.qian@uq.edu.au
关键词	Aluminium Alloys Metallic Glass Crystallization Powder Forming Ability Activation-energy Amorphous-alloys Kinetics La Nanocrystallization Microstructure Consolidation Plasticity Property
URL	查看原文
WOS记录号	WOS:000298311100055
引用统计	被引频次：27[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/321006/30490
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. P. Li,M. Yan,B. J. Yang,et al. Crystallization behaviour and thermal stability of two aluminium-based metallic glass powder materials[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2011,530:432-439.
APA	X. P. Li,M. Yan,B. J. Yang,J. Q. Wang,G. B. Schaffer,&M. Qian.(2011).Crystallization behaviour and thermal stability of two aluminium-based metallic glass powder materials.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,530,432-439.
MLA	X. P. Li,et al."Crystallization behaviour and thermal stability of two aluminium-based metallic glass powder materials".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 530(2011):432-439.