In this study, a vertical semi-continuous casting method enhanced by MV and EMF was used to prepare Cu-15Ni-8Sn alloy. The findings demonstrate that the combined application of MV and EMF promotes the transformation of solidification microstructure from columnar dendrites to equiaxed grains, resulting in a significant grain refinement. Additionally, the macro-segregation of the Sn element and the associated tensile properties show significant improvement. The segregation rates of surface inverse segregation and center positive segregation improve from 11.5% and −12.6% to 2.1% and −1.4%, respectively. When compared to the original alloy, the hardness, UTS, YS and EL simultaneously increase from 163 HV, 406 MPa, 223 MPa, and 26.1% to 195 HV, 477 MPa, 261 MPa, and 30.1%.
ZuoPZhangZQiX, et al.Effects of nanoscale Sn segregation on corrosion behavior of laser powder bed fusion Cu-15Ni-8Sn alloy. J Mater Sci Technol2023; 158: 96–110.
2.
SinghJBWenJGBellonP. Nanoscale characterization of the transfer layer formed during dry sliding of Cu-15wt.% Ni-8wt.% Sn bronze alloy. Acta Mater2008; 56: 3053–3064.
3.
GuoCShiYXiaoX, et al.Enhanced softening resistance and mechanical properties of Cu-Ni-Sn alloy with Al, Zn and Si micro-alloying. J Alloy Compd2022; 923: 166410.
4.
WangNShenYAnQ, et al.Microstructure evolution and mechanical property of Cu-15Ni-8Sn-0.2Nb alloy during aging treatment. J Mater Sci Technol2021; 86: 227–236.
5.
ZhaoWYangYZhangE, et al.Thermodynamic descriptions of the binary Ni-Sn and ternary Cu-Ni-Sn systems over entire composition range: a revisit. Calphad2021; 75: 102344.
6.
GuoZJieJLiuS, et al.Solidification characteristics and segregation behavior of Cu-15Ni-8Sn alloy. Metall Mater Trans A2020; 51: 1229–1241.
7.
KondoS-iNakashimaHMorimuraT. Spinodal decomposition in a melt-spun Cu-15Ni-8Sn alloy. Phys Rev B Condens2019; 560: 244–254.
8.
WangJZhouXLiJ, et al.A comparative study of Cu-15Ni-8Sn alloy prepared by L-DED and L-PBF: microstructure and properties. Mat Sci Eng A2022; 840: 142934.
9.
ZhangGLiuSChenC, et al.Effect of heat treatment on microstructure and mechanical properties of a selective laser melted Cu-15Ni-8Sn alloy. Mat Sci Eng A2019; 763: 138132.
10.
LiJZhangZXuW, et al.Hot isostatic pressing of Cu-15Ni-8Sn alloy with suppressed Sn macro-segregation and enhanced mechanical properties. Mat Sci Eng A2022; 855: 143866.
11.
ZhaoCWangZLiD, et al.Comparison of additively manufacturing samples fabricated from pre-alloyed and mechanically mixed powders. J Alloy Compd2020; 830: 154603.
12.
TangDWangLLiJ, et al.Microstructure, element distribution, and mechanical property of Cu-9Ni-6Sn alloys by conventional casting and twin-roll casting. Metall Mater Trans A2020; 51: 1469–1474.
13.
GuoLZuoPZhangZ, et al.A review of Cu-Ni-Sn alloys: processing, microstructure, properties, and developing trends. Materials (Basel)2023; 16: 44.
14.
GuoZJieJLiuS, et al.Effect of V addition on microstructures and mechanical properties of Cu-15Ni-8Sn alloy. Mat Sci Eng A2019; 748: 85–94.
15.
GaoMChenZKangH, et al.Effects of Nb addition on the microstructures and mechanical properties of a precipitation hardening Cu-9Ni-6Sn alloy. Mat Sci Eng A2018; 715: 340–347.
16.
LiangYHZhaoYGQinQD, et al.Effect of mechanical vibration on the microstructure and thermal fatigue behavior of cast hot work die steel. J Mater Sci2006; 41: 2529–2532.
17.
YanZLiuHLiT, et al.Effects of alternating magnetic field and casting parameters on solidification structure and mechanical properties of copper hollow billets. Mater Design2009; 30: 1245–1250.
18.
ShenZZhouBZhongJ, et al.Evolutions of the micro- and macrostructure and tensile property of Cu-15Ni-8Sn alloy during electromagnetic stirring-assisted horizontal continuous casting. Metall Mater Trans B2019; 50: 2111–2120.
19.
LiuDZhouYYangR, et al.Effect of electromagnetic stirring current on the mechanical properties of Cu-15Ni-8Sn alloy and its mechanism of inducing dendrite refinement and Sn distribution homogenization. Mater Today Commun2023; 37: 107224.
20.
ZhangSShiJZhaoL, et al.Influence of as-cast structure refinement on heritability of mechanical properties for Cu-15Ni-8Sn alloys. Mater Lett2022; 328: 133097.
21.
XuSSongTLiY, et al.The effect of Sn-rich phases on dynamic recrystallization behavior of Cu-9Ni-6Sn-(0.05Nb) alloys. Mater Today Commun2023; 36: 106518.
22.
ZhangJZhengJChenX, et al.Effect of Hf addition on structural transformation and aging stability of Cu-15Ni-8Sn alloy. Mat Sci Eng A2024; 899: 146434.
23.
WangYZhangXTianH, et al.Effect of purity on solidification structure and micro-segregation in a nickel-based single crystal superalloy. J Alloy Compd2024; 999: 174929.
24.
WangTZouCChenZ, et al.In situ synthesis of TiB2 particulate reinforced copper matrix composite with a rotating magnetic field. Mater Design2015; 65: 280–288.
25.
JieJCYueSPLiuJ, et al.Revealing the mechanisms for the nucleation and formation of equiaxed grains in commercial purity aluminum by fluid-solid coupling induced by a pulsed magnetic field. Acta Mater2021; 208: 116747.
26.
LuoHZhangXWangY, et al.Multi-physics coupled numerical simulation study to optimize process parameters for electromagnetic stirring of semi-solid A356 aluminum alloy under the influence of skin effect. Int Commun Heat Mass2024; 157: 107834.
27.
WangSWangQChenR, et al.Numerical analysis for solid-liquid interface shape at various temperature gradient in electromagnetic cold crucible directional solidification. Int J Heat Mass Tran2022; 199: 123443.
28.
GaoZJieWLiuY,et al.Solidification modelling for coupling prediction of porosity and segregation. Acta Mater2017; 127: 277–286.
29.
GaoZJieWLiuY, et al.A model for coupling prediction of inverse segregation and porosity for up-vertical unidirectional solidification of Al-Cu alloys. J Alloy Compd2019; 797: 514–522.
