Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system

IMR OpenIR

	Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system
	Q. Wang; J. B. Qiang; Y. M. Wang; J. H. Xia; Z. Lin; X. F. Zhang; C. Dong
	2006
发表期刊	Acta Physica Sinica
ISSN	1000-3290
卷号	55 期号:1 页码:378-385
摘要	The present paper investigates the formation and composition characteristics of Cu-based bulk metallic glasses (BMGs) in the inter-transition metal system Cu-Zr-Ti by using an "e/a-variant criterion" which is relevant to clusters. Three such composition lines, (Cu9/13Zr4/13)(100-x)Ti-x, (Cu0.618Zr0.382)(100-x)Ti-x and (Cu0.56Zr0.44)(100-x)Ti-x, are defined in the Cu-Zr-Ti system. Among them, Cu9Zr4, Cu61.8Zr38.2 and Cu56Zr44 are specific Cu-Zr binary cluster compositions. Alloy compositions are designed along these three composition lines, and alloy rods with diameter of 3mm are prepared by copper mould casting. X-ray and TEM analysis show that BMGs are formed within Ti content range of x = 7.5%-15%, x = 7.5%-12.5% and x = 5%-12% respectively along these three lines. Thermal analysis results further indicate that these BMGs have higher thermodynamic T-g, T-x, T-g/T-l and gamma values, and these values of BMGs on every composition line decrease with increasing Ti content. The optimum BMG composition in this system is Cu64Zr28.5Ti7.5 on the (Cu9/13Zr4/13)(100-x)Ti-x series, which also has the highest hardness and activation energy of crystallization. The characteristic parameters of this BMG are T-g = 736K, T-x = 769K, T-g/T-l = 0.627, gamma = 0.403, H-v = 6.74GPa and Delta E = 3.88 eV, which are all superior to those of the reported BMG Cu60Zr30 Ti-10.
部门归属	dalian univ technol, state key lab mat modificat, dalian 116024, peoples r china. dalian univ technol, lab special proc raw mat, dalian 116024, peoples r china. city univ hong kong, dept phys & mat sci, kowloon, hong kong, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;wang, q (reprint author), dalian univ technol, state key lab mat modificat, dalian 116024, peoples r china;dong@dlut.edu.cn
关键词	Bulk Metallic Glasses Cu-zr-ti Alloys Atomic Clusters Electron Concentration Short-range Order Thermal-stability Mechanical-properties Amorphous-alloys Forming Ability Calorimetric Evidence Supercooled Liquid Criterion Phase Ag
URL	查看原文
WOS记录号	WOS:000234257400066
引用统计	被引频次：26[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/321006/34519
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. Wang,J. B. Qiang,Y. M. Wang,et al. Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system[J]. Acta Physica Sinica,2006,55(1):378-385.
APA	Q. Wang.,J. B. Qiang.,Y. M. Wang.,J. H. Xia.,Z. Lin.,...&C. Dong.(2006).Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system.Acta Physica Sinica,55(1),378-385.
MLA	Q. Wang,et al."Formation and composition optimization of Cu-based bulk metallic glasses in Cu-Zr-Ti ternary system".Acta Physica Sinica 55.1(2006):378-385.