The eutectic nucleation kinetics of Al-25%Si alloys was investigated under pulsed magneto oscillation treatment using differential scanning calorimeter. In the eutectic melting of untreated and treated Al-25%Si alloys, the onset temperature remains roughly constant, and both the peak and end temperatures increase with increased heating rate. In the eutectic solidification, the onset temperature of two alloys remains roughly constant, and both the peak and end temperatures decrease with increased cooling rate. The activation energy and nucleation energy of the treated Al-25%Si alloy decrease, but the eutectic nucleation rate increases. Based on PMO treatment refinement mechanism and eutectic structure analysis, the eutectic structure of Al-25%Si alloys is refined with the decreased size and increased area fraction of primary silicon.
ZhuZWangYFShiDM, et al.Optimizing the microstructure and enhancing the mechanical prsoperties of hypereutectic Al-Si alloys by Mg addition. J Mater Res Technol2024; 32: 457–469.
2.
PengJFWangWLYuanSJ, et al.Improved mechanical and frictional properties of hypereutectic Al-Si alloy by modifying Si phase with La addition. J Alloy Compd Mater Today Commun2024; 38: 107857.
3.
WangYFZhangHLiuY, et al.Effect of trace bismuth on the solidification structure of hypereutectic Al-22Si alloys. Mater Today Commun2024; 38: 107772.
4.
FangJZhongYHXiaMK, et al.Mechanical and thermo-physical properties of rapidly solidified Al-50Si-Cu(Mg) alloys for thermal management application. T Nonferr Metal Soc2021; 31: 586–594.
5.
PengQZhangYHWennerS, et al.Rapid solidification of Al-Si alloys using differential fast scanning calorimetry. J Alloy Compd2023; 965: 171346.
6.
ChenXZhongYBZhengTX, et al.Refinement of primary Si in the bulk solidified Al-20wt.%Si alloy assisting by high static magnetic field and phosphorus addition. J Alloy Compd2017; 714: 39–46.
7.
TodaroCJEastonMAQiuD, et al.Effect of ultrasonic melt treatment on intermetallic phase formation in a manganese-modified Al-17Si-2Fe alloy. J Mater Process Tech2019; 271: 346–356.
8.
JungJGAhnTYChoYH, et al.Synergistic effect of ultrasonic melt treatment and fast cooling on the refinement of primary Si in a hypereutectic Al-Si alloy. Acta Mater2018; 144: 31–40.
9.
ZhuXZWangSHDongXX, et al.Morphologically templated nucleation of primary Si on AlP in hypereutectic Al-Si alloys. J Mater Sci Technol2022; 100: 36–45.
10.
CaiZYZhangCWangRC, et al.Effect of solidification rate on the coarsening behavior of precipitate in rapidly solidified Al-Si alloy. Prog Nat Sci2016; 26: 391–397.
11.
ZhaoJChengYFHanK, et al.Numerical and experimental studies of surface-pulsed magneto-oscillation on solidification. J Mater Sci Technol2016; 229: 286–293.
12.
LiangDLiangZYZhaiQJ, et al.Nucleation and grain formation of pure Al under pulsed magneto-oscillation treatment. Mater Lett2014; 130: 48–50.
13.
HaoYGaoBTuGF, et al.Surface modification of Al-20Si alloy by high current pulsed electron beam. Appl Surf Sci2011; 257: 3913–3919.
14.
EdryIShoihetAHayunS. On the effects of electric current intensity and pulse frequency on the solidified structure of pure aluminum subjected to pulse magneto-oscillation treatment. J Mater Sci Technol2021; 288: 116844.
15.
HeLJWangJZQiJG, et al.Influence of electric pulse on solidification structure of LM-29 Al-Si alloy. China Foundry2010; 7: 153–156.
16.
ZhangYHXuYYYeCY, et al.Relevance of electrical current distribution to the forced flow and grain refinement in solidified Al-Si hypoeutectic alloy. Sci Rep2018; 8: 3243.
17.
ZhangLLiWYaoJP, et al.Effects of pulsed magnetic field on microstructures and morphology of the primary phase in semisolid A356 Al slurry. Mater Lett2012; 66: 190–192.
18.
RäbigerDZhangYGalindoV, et al.The relevance of melt convection to grain refinement in Al-Si alloys solidified under the impact of electric currents. Acta Mater2014; 79: 327–338.
19.
NafisiSGhomashchiRValiaH. Eutectic nucleation in hypoeutectic Al-Si alloys. Mater Charact2008; 59: 1466–7143.
20.
LiJHZarifMZAlbuM, et al.Nucleation kinetics of entrained eutectic Si in Al-5Si alloys. Acta Mater2014; 72: 80–98.
21.
XuYJDengYCasariD, et al.Growth kinetics of primary Si particles in hypereutectic Al-Si alloys under the influence of P inoculation: experiments and modelling. J Alloy Compd2021; 854: 155323.
22.
DangBJianZYXuJF. Effect of pulsed magneto oscillation and phosphorus on microstructure and tensile properties of as-cast Al-25% Si alloy. Int J Mater Res2021; 112: 295–302.
23.
WuYYLiuXFJiangBG, et al.Eutectic nucleation in Al-25wt.%Si alloy through DSC. Rare Metals2010; 29: 62–65.
