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  Uncoupling Growth Mechanisms of Binary Eutectics during Rapid Solidification

Guo, C., Wang, J., Li, J., Wang, Z., Tang, S., & Huang, Y. (2017). Uncoupling Growth Mechanisms of Binary Eutectics during Rapid Solidification. The Journal of Physical Chemistry C, 121(14), 8204-8210. doi:10.1021/acs.jpcc.7b01311.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-7049-F Version Permalink: http://hdl.handle.net/21.11116/0000-0001-704A-E
Genre: Journal Article

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 Creators:
Guo, Can1, Author              
Wang, Jincheng2, Author              
Li, Junjie1, Author              
Wang, Zhijun1, Author              
Tang, Sai3, Author              
Huang, Yunhao1, Author              
Affiliations:
1State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, China, persistent22              
2State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Youyi Western Road 127, Xi'an, China, persistent22              
3Theory and Simulation, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863392              

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Free keywords: Bins; Eutectics; Nucleation; Rapid solidification, Atomistic simulations; Binary eutectics; Crystallization velocity; Eutectic solidification; Growth mechanisms; Incubation time; Nucleation rate; Solidification condition, Solidification
 Abstract: Eutectic solidification under rapid solidification conditions has enormous applications, as it can produce microstructure-refined and interface-stable combined composite structures with low cost. However, investigations reported that the coupled interfaces will be destroyed under the condition of large undercoolings. For further understanding of the mechanisms of uncoupling growth, we investigated the uncoupling growth process of binary eutectics during rapid solidification using atomistic simulations. We find that both the nucleation rate and the crystallization velocity for the first phase of eutectics are very high; however, nucleation of the second phase is very inactive: its nucleation rate is low and nucleation incubation time is very long. As the nucleation of the eutectic second phase is severely suppressed during rapid solidifications, the crystallization of the second phase lags far behind, therefore we speculate that the uncoupling growth of eutectics during rapid solidification is nucleation-induced. © 2017 American Chemical Society.

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Language(s): eng - English
 Dates: 2017-04-13
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1021/acs.jpcc.7b01311
BibTex Citekey: Guo20178204
 Degree: -

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Title: The Journal of Physical Chemistry C
  Abbreviation : J. Phys. Chem. C
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 121 (14) Sequence Number: - Start / End Page: 8204 - 8210 Identifier: ISSN: 1932-7447
CoNE: /journals/resource/954926947766