Thermodynamics and solidification kinetics of Ag-Ni-Co immiscible alloys

doi:10.1007/s10853-020-05431-7

CORC > 金属研究所 > 中国科学院金属研究所

	Thermodynamics and solidification kinetics of Ag-Ni-Co immiscible alloys
	Deng, Congkun 1,2; Jiang, Hongxiang 2; Zhao, Jiuzhou 1,2; Zhang, Lili 2; He, Jie 2
刊名	JOURNAL OF MATERIALS SCIENCE
	2020-10-26
页码	17
ISSN号	0022-2461
DOI	10.1007/s10853-020-05431-7
通讯作者	Zhao, Jiuzhou(jzzhao@imr.ac.cn)
英文摘要	Phase equilibria in the Ag-Co and Ag-Ni-Co systems were experimentally determined. Thermodynamic assessments for these two systems were performed by applying the Calculation of Phase Diagrams method on the basis of the present and previous experimental results. The optimized thermodynamic parameters bring about a good agreement between the calculated results and experimental data in these two systems. Solidification experiments were conducted for Ag-Ni-Co alloys, and samples with composite microstructure were obtained, in which the (Ni, Co)-rich dispersed-phase particles (DPPs) distribute uniformly in the Ag matrix. The microhardness of the Ag-Ni-Co alloys increases with the content of nickel and cobalt and the cooling rate of the alloys during solidification. A model was developed to analyze the solidification microstructure formation of Ag-Ni-Co alloys by coupling the thermodynamic and kinetic calculations. The microstructure evolution was simulated and discussed in details. The numerical results are consistent with the experimental ones. They demonstrate that the cooling rate during the nucleation of the (Ni, Co)-rich dispersed-phase droplets (DPDs)/DPPs has a dominant influence on the solidification microstructure. The effect of Ostwald ripening of the DPDs/DPPs during solidification is very weak under the present cooling conditions. Graphic abstract
资助项目	National Natural Science Foundation of China[51771210] ; National Natural Science Foundation of China[51971227] ; National Natural Science Foundation of China[51774264] ; National Natural Science Foundation of China[51901231] ; Chinese Academy of Sciences Strategic Priority Program on Space Science[XDA15013800] ; Natural Science Foundation of Liaoning Province[2020-MS-005]
WOS研究方向	Materials Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000584362800003
资助机构	National Natural Science Foundation of China ; Chinese Academy of Sciences Strategic Priority Program on Space Science ; Natural Science Foundation of Liaoning Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/141111]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhao, Jiuzhou
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Deng, Congkun,Jiang, Hongxiang,Zhao, Jiuzhou,et al. Thermodynamics and solidification kinetics of Ag-Ni-Co immiscible alloys[J]. JOURNAL OF MATERIALS SCIENCE,2020:17.
APA	Deng, Congkun,Jiang, Hongxiang,Zhao, Jiuzhou,Zhang, Lili,&He, Jie.(2020).Thermodynamics and solidification kinetics of Ag-Ni-Co immiscible alloys.JOURNAL OF MATERIALS SCIENCE,17.
MLA	Deng, Congkun,et al."Thermodynamics and solidification kinetics of Ag-Ni-Co immiscible alloys".JOURNAL OF MATERIALS SCIENCE (2020):17.