Kinetic effect of Cu-Zr-Ag-Al bulk metallic glass in the crystallization process

	Kinetic effect of Cu-Zr-Ag-Al bulk metallic glass in the crystallization process
	Zhang, Xiangyun; Yuan, Zizhou; Feng, Xuelei; Cui, Lizhi; Li, Duanxian
刊名	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
	2016
卷号	45 期号:1 页码:141-144
关键词	Activation energy Aluminum alloys Binary alloys Copper alloys Differential scanning calorimetry Glass Heating rate Kinetic theory Kinetics Metallic glass Silver alloys Titanium alloys Zircaloy Bulk metallic glass Characteristic temperature Crystallization mechanisms Crystallization process Micro-structure evolutions Nonisothermal crystallization Nucleation and growth Primary crystallization
ISSN号	1002185X
英文摘要	Copper-mold suction casting was employed for the Cu40Zr44Ti8Al8 bulk metallic glasses (BMGs) preparation. X-ray diffraction (XRD) and differential scanning calorimetry (DSC) were used to analyze the microstructure evolution and crystallization kinetics of the samples. Results show that Al3Zr and Cu10Zr7 precipitate from the amorphous matrix successively. The activation energy of the first crystallization peak calculated by the Kissinger and Ozawa method are 315.69 and 312.65 kJ/mol, respectively, so the BMGs are highly thermal stable. Crystallization process of the BMGs shows an obvious kinetic effect. The dependence of the characteristic temperatures on the heating rate follows Lasocka equation. But crystallization mechanism of the BMGs hardly shows any kinetic effect and has nothing to do with heating rate. Parameters fitted by the GM modal under the heating rate of 30 K/min change form λi=5.2, n=3.4 to λi=2.5, n=4, indicating that the BMGs experiences an increasing nucleation and growth rates in the primary crystallization process. © 2016, Science Press. All right reserved.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	中文
出版者	Rare Metals Materials and Engineering Press
WOS记录号	WOS:000369551100029
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112446]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Non-Ferrous Materials, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhang, Xiangyun,Yuan, Zizhou,Feng, Xuelei,et al. Kinetic effect of Cu-Zr-Ag-Al bulk metallic glass in the crystallization process[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2016,45(1):141-144.
APA	Zhang, Xiangyun,Yuan, Zizhou,Feng, Xuelei,Cui, Lizhi,&Li, Duanxian.(2016).Kinetic effect of Cu-Zr-Ag-Al bulk metallic glass in the crystallization process.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,45(1),141-144.
MLA	Zhang, Xiangyun,et al."Kinetic effect of Cu-Zr-Ag-Al bulk metallic glass in the crystallization process".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 45.1(2016):141-144.