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논문 기본 정보

자료유형
학술저널
저자정보
Qingyuan Qin (Shanghai Jiao Tong University) Zhao Zhang (Shanghai Jiao Tong University) Lin Yang (Shanghai Jiao Tong University) Jinfu Li (Shanghai Jiao Tong University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.30 No.5
발행연도
2024.5
수록면
1,270 - 1,281 (12page)
DOI
10.1007/s12540-023-01580-x

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초록· 키워드

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Taking Ag-27 at% Cu hypoeutectic and Ag-67 at% Cu hypereutectic alloys as examples, a theoretical criterion was establishedbased on the classical nucleation theory to predict the non-reciprocal nucleation. For a eutectic alloy composed of αand β solid phases, non-reciprocal nucleation will not occur if the critical nucleation work of one phase on the other phaseis approximately equal to that of the latter on the former. Otherwise, one phase can act as the more effective nucleationsubstrate for the other phase and non-reciprocal nucleation takes place. For Ag–Cu alloys, the wetting angle of β-Cu onα-Ag is larger than that of α-Ag on β-Cu, but the critical nucleation work for β-Cu to heterogeneously nucleate on α-Ag inhypoeutectic alloys is obviously smaller than that for α-Ag on β-Cu in hypereutectic Ag–Cu alloys. Thus, α-Ag phase is abetter nucleant for β-Cu phase than vice versa and the Ag–Cu alloys solidify with non-reciprocal nucleation, reflected byonly a halo of α-Ag around primary β-Cu phase in the hypereutectic Ag–Cu alloy.

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