Formation, thermal stability and mechanical properties of Zr-Nb-Cu-Ni-Al bulk metallic glasses

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	Formation, thermal stability and mechanical properties of Zr-Nb-Cu-Ni-Al bulk metallic glasses
	W. B. Dong; H. F. Zhang; W. S. Sun; B. Z. Ding; Z. Q. Hu
	2006
发表期刊	Materials Transactions
ISSN	1345-9678
卷号	47 期号:5 页码:1294-1298
摘要	Bulk Zr62-xNbxCu15.4Ni12.6Al10 (x = 0-10 at%) glassy alloys were prepared via copper mould casting. XRD. DSC, SEM and compression test show appropriate niobium addition can enhance the glass forming ability (GFA) and thermal stability of these alloys. The bulk amorphous alloy with x = 2.5 displays the largest temperature interval of supercooled liquid region (Delta T-x) up to 105 K and the largest gamma value 0.428. However, the largest critical diameter is not achieved at x = 2.5 but at x = 5 instead, indicating a larger Delta T-x and gamma value does not necessarily mean a higher glass-forming ability. At x = 10, no glass transition but crystallization takes place, suggesting too much Nb may promote crystallization. The compression test shows increasing Nb content increases the strength and reduces the plasticity of the Zr62-xNbxCu15.4Ni12.6Al10 glassy alloy, which is apparently attributed to the decrease in the number of microstructural heterogeneities in the metallic glasses, resulting in much less severe multiplication and interaction of shear bands.
部门归属	chinese acad sci, inst met res, shenyang 110016, peoples r china.;zhang, hf (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;hfzhang@imr.ac.cn
关键词	Zirconium-based Bulk Metallic Glass Glass Forming Ability Thermal Stability Mechanical Properties Crystalline Phase-formation Amorphous-alloys Forming Ability Enhanced Plasticity Strength Composites Science
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WOS记录号	WOS:000238966400004
引用统计	被引频次：13[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/321006/34179
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. B. Dong,H. F. Zhang,W. S. Sun,et al. Formation, thermal stability and mechanical properties of Zr-Nb-Cu-Ni-Al bulk metallic glasses[J]. Materials Transactions,2006,47(5):1294-1298.
APA	W. B. Dong,H. F. Zhang,W. S. Sun,B. Z. Ding,&Z. Q. Hu.(2006).Formation, thermal stability and mechanical properties of Zr-Nb-Cu-Ni-Al bulk metallic glasses.Materials Transactions,47(5),1294-1298.
MLA	W. B. Dong,et al."Formation, thermal stability and mechanical properties of Zr-Nb-Cu-Ni-Al bulk metallic glasses".Materials Transactions 47.5(2006):1294-1298.