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Thermodynamics and solidification kinetics of Ag-Ni-Co immiscible alloys
Deng, Congkun1,2; Jiang, Hongxiang1; Zhao, Jiuzhou1,2; Zhang, Lili1; He, Jie1
Corresponding AuthorZhao, Jiuzhou(jzzhao@imr.ac.cn)
2020-10-26
Source PublicationJOURNAL OF MATERIALS SCIENCE
ISSN0022-2461
Pages17
AbstractPhase 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
Funding OrganizationNational Natural Science Foundation of China ; Chinese Academy of Sciences Strategic Priority Program on Space Science ; Natural Science Foundation of Liaoning Province
DOI10.1007/s10853-020-05431-7
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000584362800003
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141112
Collection中国科学院金属研究所
Corresponding AuthorZhao, Jiuzhou
Affiliation1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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.
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