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Home > Archive>Volume 50, Issue 6, 2021 >1935-1940. DOI:10.12442/j.issn.1002-185X.20200388
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Nucleation Dynamics of Rapidly Solidified Ternary Eutectic Au-19.25Ag-12.80Ge Brazing Filler
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Affiliation:

1.School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China;2.State Key Laboratory of Advanced Brazing Filler Metals & Technology, Zhengzhou Research Institute of Mechanical Engineering Co., Ltd, Zhengzhou 450001, China;3.School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China;4.State Grid Henan Electric Power Research Institute, Zhengzhou 450052, China

Clc Number:

TG454

Fund Project:

Thousand Talents Plan of Leading Talents Fund in Science and Technology Innovation in Henan Province (ZYQR20180030)

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    Abstract:

    The nucleation of rapidly solidified Au-19.25Ag-12.80Ge ternary eutectic alloy was analyzed and discussed according to the classical nucleation theory. Then the relationship between the incubation period of each phase and the melting temperature was obtained. The results show that for rapidly solidified Au-19.25Ag-12.80Ge brazing filler, the incubation period of AuAg solid solution is much shorter than that of Ge phase, and AuAg phase is precipitated preferentially as the main nucleation phase in the rapid solidification process. According to the time-dependent transient nucleation theory, the critical nucleation temperature, critical nucleation undercooling and critical nucleation number of the brazing filler were calculated under continuous cooling conditions. It can be seen that with increase of the cooling rate, the initial nucleation undercooling required to trigger melt nucleation increases, and the critical nucleation number increases substantially too.

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[Cui Datian, Zhong Sujuan, Song Kexing, Geng Jinfeng, Wang Xingxing, Long Weimin. Nucleation Dynamics of Rapidly Solidified Ternary Eutectic Au-19.25Ag-12.80Ge Brazing Filler[J]. Rare Metal Materials and Engineering,2021,50(6):1935~1940.]
DOI：10.12442/j. issn.1002-185X.20200388

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History
  • Received:June 03,2020
  • Revised:September 25,2020
  • Adopted:October 15,2020
  • Online: July 07,2021
  • Published: June 30,2021

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