Abstract The effect of static magnetic field (SMF) on the solid–liquid interfacial free energy of Al–Cu alloy system was experimentally determined by an improved grain boundary groove method. The value of the solid α-Al-liquid Al–Cu system was found to increase from (157.16±14.14) × 10−3J•m−2 to (206.65±18.60) × 10−3J•m−2, with an increasing rate of 31.5%, while that of the solid CuAl2-liquid Al–Cu system decreased by 46.17% from (280.70±25.26) × 10−3J•m−2 to (151.11±13.56) × 10−3 J•m−2 with SMF. The influence of SMF on the value of Al-Cu alloy system was explained as the formation of magnetic dipole on the solid-liquid interface, which was supposed to change the surface tension.

中文翻译：

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静磁场对Al-Cu合金系固液界面自由能的影响

摘要 通过改进的晶界凹槽法，实验确定了静磁场（SMF）对Al-Cu合金系统固液界面自由能的影响。发现固体 α-Al-液体 Al-Cu 系统的值从 (157.16±14.14) × 10−3J•m−2 增加到 (206.65±18.60) × 10−3J•m−2，并且随着增加31.5%，而固态CuAl2-液态Al-Cu体系的降幅为46.17%，从(280.70±25.26)×10-3J•m-2下降到(151.11±13.56)×10-3 J•m-2与 SMF。SMF对Al-Cu合金体系值的影响解释为在固-液界面上形成磁偶极子，从而改变表面张力。