In the present study, a non-equiatomic AlCrFeMnNi high-entropy alloy (HEA) bearing cost-effective elements has been developed to enhance the strength by increasing the Al content. The HEAs were prepared by employing the arc melting technique. The microstructure of cast HEAs was studied by electron microprobe analysis (EPMA), electron backscattering diffraction (EBSD), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The mechanical properties were evaluated at room temperature. The results show that the latter duplex structure exhibited significantly higher compressive strength, 2.5 GPa at 50% strain. The measured ductility under the tensile stress of the duplex structure was considerably low. This is attributed to the various stress states in compression and tension, the phase structures, and the induced deformation mechanism in the studied HEAs.
ZhaoYJ, QiaoJW, MaSG, . A hexagonal close-packed high-entropy alloy: the effect of entropy. Mater Des. 2016;96:10–15. doi:10.1016/j.matdes.2016.01.149
5.
TsaiM, YehJ, TsaiM, . High-entropy alloys: a critical review high-entropy alloys: a critical review. Mater Res Lett.2014;2:107–123. doi:10.1080/21663831.2014.912690
6.
ZhangBY, ZhouYJ, LinJP, . Solid-solution phase formation rules for multi-component alloys. Adv Eng Mater. 2008;10:534–538. doi:10.1002/adem.200700240
7.
SenkovON, MiracleDB.A new thermodynamic parameter to predict formation of solid solution or intermetallic phases in high entropy alloys. J Alloys Compd. 2016;658:603–607. doi:10.1016/j.jallcom.2015.10.279
8.
HuangBP, YehJ.Multi-principal-element alloys with improved oxidation and wear resistance for thermal spray coating. Adv Eng Mater. 2004;6:74–78. doi:10.1002/adem.200300507
9.
MiracleDB, SenkovON.A critical review of high entropy alloys and related concepts. Acta Mater. 2017;122:448–511. doi:10.1016/j.actamat.2016.08.081
10.
YehJW, ChenSK, LinSJ, . Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes. Adv Eng Mater. 2004;6:299–303 + 274. doi:10.1002/adem.200300567
11.
ChenYY, HongUT, ShihHC, . Electrochemical kinetics of the high entropy alloys in aqueous environments — a comparison with type 304 stainless steel. Corros Sci. 2005;47:2679–2699. doi:10.1016/j.corsci.2004.09.026
12.
ZhouYJ, ZhangY, WangYL, . Solid solution alloys of AlCoCrFeNiTix with excellent room-temperature mechanical properties. AIP. 2012;90(18):181904–181904-3. doi:10.1063/1.2734517
13.
MiracleDB, MillerJD, SenkovON, . Exploration and development of high entropy alloys for structural applications. Entropy. 2014;16:494–525. doi:10.3390/e16010494
14.
CantorB, ChangITH, KnightP, . Microstructural development in equiatomic multicomponent alloys. Mater Sci Eng A. 2004;375–377:213–218. doi:10.1016/j.msea.2003.10.257
15.
OttoF, YangY, BeiH, . Relative effects of enthalpy and entropy on the phase stability of equiatomic high-entropy alloys. Acta Mater. 2013;61:2628–2638. doi:10.1016/j.actamat.2013.01.042
16.
StepanovN, TikhonovskyM, YurchenkoN, . Effect of cryo-deformation on structure and properties of CoCrFeNiMn high-entropy alloy. Intermetallics. 2015;59:8–17. doi:10.1016/j.intermet.2014.12.004
17.
SalishchevGA, TikhonovskyMA, ShaysultanovDG, . Effect of Mn and v on structure and mechanical properties of high-entropy alloys based on CoCrFeNi system. J Alloys Compd. 2014;591:11–24. doi:10.1016/j.jallcom.2013.12.210
18.
KaoYF, ChenTJ, ChenSK, . Microstructure and mechanical property of as-cast, -homogenized, and -deformed AlxCoCrFeNi (0 ≤ x ≤ 2) high-entropy alloys. J Alloys Compd2009;488:57–64. doi:10.1016/j.jallcom.2009.08.090
19.
ElkatatnyS, Abdel Hady GepreelM, HamadaA.Effect of cold rolling on the microstructure and hardness of Al5Cr12Fe35Mn28Ni20 high entropy alloy. Mater Sci Forum. 2018;917:241–245. doi:10.4028/www.scientific.net/MSF.917.241
20.
ElkatatnyS, GepreelMAH, HamadaA, . Effect of Al content and cold rolling on the microstructure and mechanical properties of Al5Cr12Fe35Mn28Ni20 high-entropy alloy. Mater Sci Eng A. 2019;759:380–390. doi:10.1016/j.msea.2019.05.056
21.
Abdel-GhanyAW, ElkatatnyS, Abdel Hady GepreelM.Microstructure and mechanical properties investigation of New Al10Cr12Mn28Fe (50-x) Ni (x) high entropy alloys. Materials Sci Forum.2020;998:9–14. doi:10.4028/www.scientific.net/msf.998.9
22.
ElkatatnyS, AbdelghanyAW, HamadaA, . Microstructural strengthening and mechanical performance of Ti-bearing Al5Cr12Fe35Mn28Ni20 high-entropy alloy. Mater Sci Technol. 2023;39(4):501–508. doi:10.1080/02670836.2022.2123398
23.
YehBJ, . Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes. Adv Eng Mater. 2004;5:299–303. doi:10.1002/adem.200300567
24.
HeJY, . Effects of Al addition on structural evolution and tensile properties of the FeCoNiCrMn high-entropy alloy system. Acta Mater. 2014;62(1):105–113.
25.
ShaysultanovDG, SalishchevGA, IvanisenkoYu.V, . Novel Fe36Mn21Cr18Ni15Al10 high entropy alloy with bcc/B2 dual-phase structure. J Alloys Compd. 2017;705:756–763. doi:10.1016/j.jallcom.2017.02.211
26.
McQueenHJ, YueS, RyanND, . Hot working characteristics of steels in austenitic state. J Mater Process Tech. 1995;53(1–2):293–310. doi:10.1016/0924-0136(95)01987-P
27.
ZuoTT, LiRB, RenXJ, . Effects of Al and Si addition on the structure and properties of CoFeNi equal atomic ratio alloy. J Magn Magn Mater. 2014;371:60–68. doi:10.1016/j.jmmm.2014.07.023
28.
HamadaAS, KarjalainenLP, SomaniMC.The influence of aluminum on hot deformation behavior and tensile properties of high-Mn TWIP steels. Mater Sci Eng A. 2007;467(1–2):114–124. doi:10.1016/j.msea.2007.02.074
29.
FitznerA, PrakashDGL, da FonsecaJQ, . The effect of aluminium on twinning in binary alpha-titanium. Acta Mater. 2016;103:341–351. doi:10.1016/j.actamat.2015.09.048
