In this work, copper ferroalloys (CFAs) with various Fe contents (5, 10 and 30 wt-%) were fabricated via the mechanical alloying and vacuum sintering method, followed by hot and cold rolling. Microstructure, mechanical, electrical and magnetic properties were investigated using scanning electron microscopy (SEM), X-Ray diffraction (XRD), tensile testing, four-point probe, vibration sample magnetometer and dc BH circuit tracer, respectively. The CFAs with homogenous and fine in-situ Fe particles prepared by powder metallurgy showed better performance compared with previously reported conventional casting. After annealing at 400°C, the cold-rolled CFA with 30 wt-% Fe had the tensile strength of 621 MPa, the electrical conductivity of 50.2% IACS, magnetic saturation strength (Ms) of 60.39 emu g−1 and coercivity (Hc) of 98.2 Oe, achieving a good combination of mechanical and functional properties. Relations between the microstructure and mechanical and functional properties are discussed in detail.
CrespoP, BarroMJ, NavarroM, Magnetic properties of FexCu1−x solid solutions. J Magn Magn Mater. 1995;140:85–86.
2.
VerhoevenJ, ChuehS, GibsonE, Strength and conductivity of in situ Cu-Fe alloys. J Mater Sci. 1989;24:1748–1752.
3.
MacríPP, RoseP, FrattiniR, A study of Cu50Fe50 produced by mechanical alloying and its thermal treatment. J Appl Phys. 1994;76(7):4061–4067.
4.
GuoJ, ShaoQ, RenkO, Combined Fe and O effects on microstructural evolution and strengthening in Cu–Fe nanocrystalline alloys. Mater Sci Eng A. 2020;772:138800.
5.
NakagawaY.Liquid immiscibility in copper-iron and copper-cobalt systems in the supercooled state. Acta Metall. 1958;6:704–711.
6.
JeongYB, JoHR, KimJT, A study on the micro-evolution of mechanical property and microstructures in (Cu-30Fe)-2X alloys with the addition of minor alloying elements. J Alloys Compd. 2019;786:341–345.
7.
JoHR, KimJT, HongSH, Effect of silicon on microstructure and mechanical properties of Cu-Fe alloys. J Alloys Compd. 2017;707:184–188.
8.
LiY, YiD, ZhangJ.Comparative study of the influence of Ag on the microstructure and mechanical properties of Cu-10Fe in situ composites. J Alloys Compd. 2015;647:413–418.
9.
WangF, WakohK, LiY, Study of microstructure evolution and properties of Cu-Fe microcomposites produced by a pre-alloyed powder method. Mater Des. 2017;126:64–72.
10.
AbbasSF, ParkK-T, KimT-S.Effect of composition and powder size on magnetic properties of rapidly solidified copper-iron alloys. J Alloys Compd. 2018;741:1188–1195.
11.
AbbasSF, KimT-S, KimB-S.The effect of microstructure on the electrical properties of gas-atomized copper-iron metastable alloys. Met Mater Int. 2018;24(4):860–868.
12.
AbbasSF, SeoS-J, ParkK-T, Effect of grain size on the electrical conductivity of copper–iron alloys. J Alloys Compd. 2017;720:8–16.
13.
JermanGA, AndersonIE, VerhoevenJD, Strength and electrical conductivity of deformation-processed Cu-15 vol pct Fe alloys produced by powder metallurgy techniques. Metall Trans A. 1993;24:35–42.
14.
ContiniA, DeloguF, GarroniS, Kinetics behaviour of metastable equiatomic Cu–Fe solid solution as function of the number of collisions induced by mechanical alloying. J Alloys Compd. 2014;615:S551–S554.
15.
SauvageX, WetscherF, PareigeP.Mechanical alloying of Cu and Fe induced by severe plastic deformation of a Cu–Fe composite. Acta Mater. 2005;53(7):2127–2135.
16.
JiangJZ, GenteC, BormannR.Mechanical alloying in the Fe–Cu system. Mater Sci Eng A. 1998;242:268–277.
17.
MajumdarB, RajabM, NarayanasamyA.Structural and magnetic investigations on the metastable phases of the mechanically alloyed Fe-Cu system. J Alloys Compd. 1997;248:192–200.
18.
SuryanarayanaC.Mechanical alloying and milling. Prog Mater Sci. 2001;46:1–184.
19.
BiselliC, MorrisDG.Microstructure and strength of Cu-Fe in situ composites after very high drawing strains. Acta Metall Mater. 1996;44:493–504.
20.
LiuKM, LuDP, ZhouHT, Effect of Ag micro-alloying on the microstructure and properties of Cu–14Fe in situ composite. Mater Sci Eng A. 2010;527(18–19):4953–4958.
21.
StepanovND, KuznetsovAV, SalishchevGA, Evolution of microstructure and mechanical properties in Cu–14%Fe alloy during severe cold rolling. Mater Sci Eng A. 2013;564:264–272.
22.
RaabeD, MattissenD.Microstructure and mechanical properties of a cast and wire-drawn ternary Cu-Ag-Nb in situ composite. Acta Mater. 1998;46:5973–5984.
23.
BenghalemA, MorrisDG.Microstructure and strength of wire-drawn Cu-Ag filamentary composites. Acta Mater. 1997;45:397–406.
24.
FunkenbuschPD, CourtneyTH.Reply to comments on ‘on the role of interphase barrier and substructural strengthening in deformation processed composite materials’. Scr Mater. 1990;24:1175–1180.
25.
HanK, VasquezAA, XinY, Microstructure and tensile properties of nanostructured Cu-25wt%Ag. Acta Mater. 2003;51(3):767–780.
26.
ShiG, ChenX, JiangH, Strengthening mechanisms of Fe nanoparticles for single crystal Cu–Fe alloy. Mater Sci Eng A. 2015;636:43–47.
27.
GaoH, WangJ, SunB.Effect of Ag on the thermal stability of deformation processed Cu–Fe in situ composites. J Alloys Compd. 2009;469(1–2):580–586.
28.
GaoH, WangJ, ShuD, Effect of Ag on the microstructure and properties of Cu–Fe in situ composites. Scr Mater. 2005;53(10):1105–1109.
29.
SongJS, HongSI, KimHS, Heavily drawn Cu-Fe-Ag and Cu-Fe-Cr micro-composites. J Mater Process Technol. 2001;113:610–616.
30.
XieZ, GaoHY, DongSJ, Enhanced strength and electrical conductivity of Cu8Fe composite by adding trace Ag and P. Mater Trans. 2013;54(11):2075–2078.
31.
ChienCL, LiouSH, KofaltD, Magnetic properties of FexCu100-x solid solutions. Phys Rev B. 1986;33(5):3247–3250.
32.
MaE, AtzmonM, PinkertonFE.Thermodynamic and magnetic properties of metastable FexCu100−x solid solutions formed by mechanical alloying. J Appl Phys. 1993;74(2):955–962.
33.
SumiyamaK, YoshitakeT, NakamuraY.Magnetic properties of metastable bcc and fcc Fe-Cu alloys produced by vapor quenching. J Phys Soc Jpn. 1984;53:3160–3165.
34.
JiaN, RaabeD, ZhaoX.Crystal plasticity modeling of size effects in rolled multilayered Cu-Nb composites. Acta Mater. 2016;111:116–128.
35.
LiuS, JieJ, GuoZ, A comprehensive investigation on microstructure and magnetic properties of immiscible Cu-Fe alloys with variation of Fe content. Mater Chem Phys. 2019;238:121909.
36.
YoshimiW, JunichiM, HiromiM, Effect of annealing on saturation magnetization in deformed Cu–Fe alloys with transformed Fe particles. Mater Sci Eng A. 2002;338:299–304.
37.
LongG, ZhangH, LiD, Magnetic anisotropy and coercivity of Fe3Se4 nanostructures. Appl Phys Lett. 2011;99:202103.
38.
RowlandsG.The variation of coercivity with particle size. J Phys D Appl Phys. 1976;9:1267–1269.
39.
DaiX, XieM, ZhouS, Formation mechanism and improved properties of Cu95Fe5 homogeneous immiscible composite coating by the combination of mechanical alloying and laser cladding. J Alloys Compd. 2018;740:194–202.
40.
LiuS, JieJ, DongB, Novel insight into evolution mechanism of second liquid-liquid phase separation in metastable immiscible Cu-Fe alloy. Mater Des. 2018;156:71–81.
41.
Barzegar VishlaghiM, AtaieA.Investigation on solid solubility and physical properties of Cu–Fe/CNT nano-composite prepared via mechanical alloying route. Powder Technol. 2014;268:102–109.
