Effect of Minor Alloying on Crystallization Behavior and Thermal Properties of Zr(64.5)Ni(15.5)Al(11.5)Cu(8.5) Bulk Amorphous Alloy

IMR OpenIR

	Effect of Minor Alloying on Crystallization Behavior and Thermal Properties of Zr(64.5)Ni(15.5)Al(11.5)Cu(8.5) Bulk Amorphous Alloy
	M. Iqbal; J. I. Akhter; H. F. Zhang; Z. Q. Hu
	2011
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	27 期号:6 页码:534-538
摘要	Minor alloying plays an important role in the synthesis and improvement of thermal stability of bulk metallic glasses (BMGs). The present study was conducted to investigate the effect of minor additions of Y, Ti and Nb on the crystallization behavior and the thermal properties of Zr(64.5)Ni(15.5)Al(11.5)C(8.5) alloy. Thermal parameters and the activation energies for crystallization were calculated for four (Zr(0.645)Ni(0.155)Al(0.115)-Cu(0.085))(100-x)M(x) (M=Y, Ti and Nb, while x=0, 2 at.%) alloys. The present alloys have wide supercooled liquid region of >= 87 K. Maximum activation energy was found to be greater than 300 kJ/mol for the base alloy. Four crystalline phases were identified in the samples annealed at 823 K for 20 min. Reduced glass transition temperature (T(rg)) and other thermal parameters such as gamma, delta and beta were improved by Y and Ti addition. Nb addition resists crystallization below annealing temperature 713 K, however, its effect on thermal properties is not very promising.
部门归属	[iqbal, muhammad; akhter, javed iqbal] pakistan inst nucl sci & technol pinstech, div phys, microstruct studies grp, islamabad, pakistan. [zhang, haifeng; hu, zhuangqi] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;iqbal, m (reprint author), pakistan inst nucl sci & technol pinstech, div phys, microstruct studies grp, po nilore, islamabad, pakistan;miqbalchishti@yahoo.com
关键词	Activation Energy Thermal Properties Glass-forming Ability Thermal Stability Precipitation Microstructure Glass-forming Ability Metallic Glasses Mechanical-properties Additional Elements Stability Criterion Kinetics Nb Microstructure Zr65cu18ni9al8
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30413
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Iqbal,J. I. Akhter,H. F. Zhang,et al. Effect of Minor Alloying on Crystallization Behavior and Thermal Properties of Zr(64.5)Ni(15.5)Al(11.5)Cu(8.5) Bulk Amorphous Alloy[J]. Journal of Materials Science & Technology,2011,27(6):534-538.
APA	M. Iqbal,J. I. Akhter,H. F. Zhang,&Z. Q. Hu.(2011).Effect of Minor Alloying on Crystallization Behavior and Thermal Properties of Zr(64.5)Ni(15.5)Al(11.5)Cu(8.5) Bulk Amorphous Alloy.Journal of Materials Science & Technology,27(6),534-538.
MLA	M. Iqbal,et al."Effect of Minor Alloying on Crystallization Behavior and Thermal Properties of Zr(64.5)Ni(15.5)Al(11.5)Cu(8.5) Bulk Amorphous Alloy".Journal of Materials Science & Technology 27.6(2011):534-538.