A rapidly solidified high entropy alloy AlCoNiCrFe was annealed at different temperatures with high magnetic field applied up to 4 T. Both precipitation and coarsening of the precipitates were promoted during annealing in a high magnetic field, and nanosized arrayed particles as well as boundary oriented secondary phases were formed with effects of magnetic field. The microstructural features were obtained owing to enhancement of atomic diffusion by applying high magnetic field. It was found that both hardness and yield strength were not strongly dependent on the magnetic field, but the ultimate compression strength is reduced as higher magnetic field is applied due to formation and coarsening of the precipitates on grain boundaries.
ZhangY, YangX and LiawPK: ‘Alloy design and properties optimization of high-entropy alloys’, JOM, 2012, 64, (7), 830–838.
2.
TakeuchiaA, ChenN, WadaT, ZhangW, YokoyamaY, InoueA and YehJ.-W: ‘Alloy design for high-entropy bulk glassy alloys’, IUMRS-ICA 2011, Proc. Eng., 2012, 36, 226–234.
3.
GuoS, NgC and LiuCT: ‘Anomalous solidification microstructures in Co-free AlxCrCuFeNi2 high-entropy alloys’, J. Alloys Compd, 2013, 557, 77–81.
4.
CantorB, ChangITH, KnightP and VincentAJB: ‘Microstructural development in equiatomic multicomponent alloys’, Mater. Sci. Eng. A, 2014, A375–A377, 213–218.
5.
ShunT.-T, ChangL.-Y and ShiuM.-H: ‘Microstructure and mechanical properties of multiprincipal component CoCrFeNiMox alloys’, Mater. Charact., 2012, 70, 63–67.
6.
WuW.-H, YangC.-C and YehJ.-W: ‘Industrial development of high-entropy alloys’, Ann. Chim. Sci. Mater., 2006, 31, (6), 737–747.
7.
ZhangKB, FuaZY, ZhangJY, WangWM, LeeSW and NiiharaK: ‘Characterization of nanocrystalline CoCrFeNiTiAl high-entropy solid solution processed by mechanical alloying’, J. Alloys Compd, 2010, 495, 33–38.
8.
ZhangY, ZuoTT, TangZ, GaoMC, DahmenKA, LiawPK and LuZP: ‘Microstructures and properties of high-entropy alloys’, Prog. Mater. Sci., 2014, 61, 1–93.
9.
ZhuangYX, LiuWJ, ChenZY, XueHD and HeJC: ‘Effect of elemental interaction on microstructure and mechanical properties of FeCoNiCuAl alloys’, Mater. Sci. Eng. A, 2012, A556, 395–399.
10.
MaSG and ZhangY: ‘Effect of Nb addition on the microstructure and properties of AlCoCrFeNi high-entropy alloy’, Mater. Sci. Eng. A, 2012, A532, 480–486.
11.
DongY, LuY, KongJ, ZhangJ and LiT: ‘Microstructure and mechanical properties of multi-component AlCrFeNiMox high-entropy alloys’, J. Alloys Compd, 2013, 573, 96–101.
12.
RaghavanR, KumarKCH and MurtyBS: ‘Analysis of phase formation in multi-component alloys’, J. Alloys Compd, 2012, 544, 152–157.
13.
NgC, GuoS, LuanJ, WangQ, LuJ, ShiS and LiuCT: ‘Phase stability and tensile properties of Co-free Al0·5CrCuFeNi2 high-entropy alloys’, J. Alloys Compd, 2014, 584, 530–537.
14.
YangX and ZhangY: ‘Prediction of high-entropy stabilized solid-solution in multi-component alloys’, Mater. Chem. Phys., 2012, 132, 233–238.
15.
ZhangK and FuZ: ‘Effects of annealing treatment on phase composition and microstructure of CoCrFeNiTiAlx high-entropy alloys’, Intermetallics, 2012, 22, 24–32.
16.
SinghS, WanderkaN, MurtyBS, GlatzelU and BanhartJ: ‘Decomposition in multi-component AlCoCrCuFeNi high-entropy alloy’, Acta Mater., 2011, 59, 182–190.
17.
YehJ.-W, ChenS.-K, LinS.-J, GanJ.-Y, ChinT.-S, ShunT.-T, TsauC.-H and ChangS.-Y: ‘Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes’, Adv. Eng. Mater., 2004, 6, (5), 299–303.
18.
RenB, LiuZX, CaiB, WangMX and ShiL: ‘Aging behavior of a CuCr2Fe2NiMn high-entropy alloy’, Mater. Des., 2012, 33, 121–126.
19.
NgC, GuoS, LuanJ, ShiS and LiuCT: ‘Entropy-driven phase stability and slow diffusion kinetics in an Al0·5CoCrCuFeNi high entropy alloy’, Intermetallics, 2012, 31, 165–173.
20.
LuoD, GuoJ, YanZ and LiT: ‘Effects of high magnetic fields on the solidification microstructure of an Al-Mn alloy’, Rare Met., 2009, 28, (3), 302–306.
21.
WangQ, LiuT, ZhangC, GaoA, LiD and HeJ: ‘Effects of high magnetic fields on solidified structures of Mn-90·4 wt Sb hypoeutectic alloy’, Sci. Technol. Adv. Mater., 2009, 10, (1), 46–51.
22.
HaoX and OhtsukaH: ‘Effect of high magnetic field on phase transformation temperature in Fe-C alloys’, Mater. Trans. JIM, 2004, 45, (8), 2622–2625.
23.
ZhangYD, EslingC, GongML, VincentG, ZhaoX and ZuoL: ‘Microstructural features induced by a high magnetic field in a hypereutectictoid steel during austenitic decomposition’, Acta Mater., 2006, 54, 1897–1900.
24.
LiD, WangK, WangQ, MaX, WuC and HeJ: ‘Diffusion interaction between Al and Mg controlled by a high magnetic field’, Appl. Phys., 2011, 105, 969–974.
25.
YuanZ, RenZ, LiaC, XiaoQ, WangQ, DaiY and WangH: ‘Effect of high magnetic field on diffusion behavior of aluminum in Ni–Al alloy’, Mater. Lett., 2013, 108, 340–342.
26.
WangS.-J, WuY, ZhaoX and ZuoL: ‘Effect of a high magnetic field on carbon diffusion in γ-iron’, Mater. Trans., 2011, 52, (2), 139–141.
27.
MartinJW, DohertyRD and CantorB: ‘Stability of microstructure in metallic systems’, 2nd edn, 298–300; 1997, Cambridge, Cambridge University Press.
28.
DuY, LuY, WangT, LiT and ZhangG: ‘Effect of electromagnetic stirring on microstructure and properties of Al0·5CoCrCuFeNi alloy’, Proc. Eng., 2011, 27, 1129–1134.
