Novel high-entropy and medium-entropy stainless steels (MESS), containing a high amount of alloying elements, were designed and prepared by arc melting. These high-entropy and MESS possess a simple phase constitution, mainly solid solution phases, and noticeably exhibit excellent anti-corrosion properties in sulphuric acid. In particular, an austenitic Fe65Cr13Co4.75Mn4.75Mo4.75Ni4.75Cu3 (at.-%) alloy has a higher hardness of 182 HV and better corrosion resistance than those of the 00Cr19Ni14Mn2 austenitic stainless steel prepared under the same condition; a ferritic precipitation hardening Fe65Cr13Al3.167Co3.167Mn3.167Mo3.167Ni3.167Ti3.167Cu3 (at.-%) alloy was also developed, with a higher hardness of 584 HV and even better corrosion resistance.
HaHY, JangMH, LeeTH.Influences of Mn in solid solution on the pitting corrosion behaviour of Fe-23 wt% Cr-based alloys. Electrochim Acta. 2016;191:864–875. doi: 10.1016/j.electacta.2016.01.118
3.
YoonYS, HaHY, LeeTH, Comparative study of stress corrosion cracking susceptibility of Fe18Cr10Mn- and Fe18Cr10Mn1Ni-based high nitrogen stainless steels. Corros Sci2014;88:337–348. doi: 10.1016/j.corsci.2014.07.048
4.
RaabeD, TasanCC, SpringerH, From high-entropy alloys to high-entropy steels. Steel Res. 2015;86:1127–1138. doi: 10.1002/srin.201500133
5.
GuoS.Phase selection rules for cast high entropy alloys: an overview. Mater Sci Technol2015;31:1223–1230. doi: 10.1179/1743284715Y.0000000018
6.
StepanovND, YurchenkoNY, ShaysultanovDG.Effect of Al on structure and mechanical properties of AlNbTiVZr ( = 0, 0.5, 1, 1.5) high entropy alloys. Mater Sci Technol2015;31:1139–1141. doi: 10.1179/1743284715Y.0000000032
7.
NiuB, JiW, LiN, Alloying and thermal behaviour of CoCrFeNiMn0.5Ti0.5 high-entropy alloy synthesised by mechanical alloying. Mater Sci Technol2016;32:94–98. doi: 10.1179/1743284715Y.0000000124
8.
ZhangH, HeYZ, PanY.Enhanced hardness and fracture toughness of the laser-solidified FeCoNiCrCuTiMoAlSiB0.5 high-entropy alloy by martensite strengthening. Scripta Mater. 2013;69:342–345. doi: 10.1016/j.scriptamat.2013.05.020
9.
ZhangH, PanY, HeYZ.Synthesis and characterization of FeCoNiCrCu high-entropy alloy coating by laser cladding. Mater Des. 2011;32:1910–1915. doi: 10.1016/j.matdes.2010.12.001
10.
SoareV, MitricaD, ConstantinI, Influence of remelting on microstructure, hardness and corrosion behaviour of AlCoCrFeNiTi high entropy alloy. Mater Sci Technol2015;31:1194–1200. doi: 10.1179/1743284715Y.0000000029
11.
WuPH, LiuN, ZhouPJ.Microstructures and liquid phase separation in multicomponent CoCrCuFeNi high entropy alloys. Mater Sci Technol2016;6:1–5. doi: 10.1179/1743284715Y.0000000127
12.
QiuY, GibsonMA, FraserHL, Corrosion characteristics of high entropy alloys. Mater Sci Technol2015;31:1235–1243. doi: 10.1179/1743284715Y.0000000026
13.
KumarN, FuscoM, KomarasamyM, Understanding effect of 3.5 wt.% NaCl on the corrosion of Al0.1CoCrFeNi high-entropy alloy. J Nucl Mater. 2017;495:154–163. doi: 10.1016/j.jnucmat.2017.08.015
BarrilaoJL, KuhnB, WesselE, Microstructure of intermetallic particle strengthened high-chromium fully ferritic steels. Mater Sci Technol.2017;33:1056–1064. doi: 10.1080/02670836.2016.1244039
16.
NilssonJO, WilsonA.Influence of isothermal phase transformations on toughness and pitting corrosion of super duplex stainless steel SAF 2507. Mater Sci Technol. 1993;9:545–554. doi: 10.1179/mst.1993.9.7.545
17.
DengY, TasanCC, PradeepKG, Design of a twinning-induced plasticity high entropy alloy. Acta Mater.2015;94:124–133. doi: 10.1016/j.actamat.2015.04.014
18.
JiangSH, WangH, WuY, Ultrastrong steel via minimal lattice misfit and high-density nanoprecipitation. Nature. 2017;544:460–464. doi: 10.1038/nature22032
MiracleDB, MillerJD, SenkovON, Exploration and development of high entropy alloys for structural applications. Entropy. 2014;16:494–525. doi: 10.3390/e16010494
21.
ZhangH, PanY, HeYZ, Application prospects and microstructural features in laser-induced rapidly solidified high-entropy alloys. JOM-US. 2014;66:2057–2206. doi: 10.1007/s11837-014-1036-6
22.
DeldarS, MirzadehH, ParsaMH.Prevention of surface hot shortness, development of banded structure, and mechanical properties of hot rolled Cu-bearing steel. Eng Fail Anal.2016;68:132–137. doi: 10.1016/j.engfailanal.2016.06.001
23.
ZhangH, WuWF, HeYZ, Formation of core-shell structure in high entropy alloy coating by laser cladding. Appl Surf Sci.2016;363:543–547. doi: 10.1016/j.apsusc.2015.12.059
24.
PickeringEJ, JonesNG.High-entropy alloys: a critical assessment of their founding principles and future prospects. Int Mater Rev.2016;61:183–202. doi: 10.1080/09506608.2016.1180020
25.
SchneiderH.Investment casting of high-hot strength 12% chrome steel. Foundry Trade J. 1960;108:562–563.
26.
JiangJ, XuD, XiT, Effects of aging time on intergranular and pitting corrosion behavior of Cu-bearing 304L stainless steel in comparison with 304L stainless steel. Corros Sci.2016;113:46–56. doi: 10.1016/j.corsci.2016.10.003
27.
LiGY, AugerMA, WilfordK, Sequential nucleation of phases in a 17-4PH steel: microstructural characterisation and mechanical properties. Acta Mater.2017;125:38–49. doi: 10.1016/j.actamat.2016.11.052
28.
PingDH, OhnumaM, HirakawaY, Microstructural evolution in 13Cr-8Ni-2.5Mo-2Al martensitic precipitation-hardened stainless steel. Mater Sci Eng A. 2005;394:285–295. doi: 10.1016/j.msea.2004.12.002
29.
HeJY, WangH, HuangHL, A precipitation-hardened high-entropy alloy with outstanding tensile properties. Acta Mater.2016;102:187–196. doi: 10.1016/j.actamat.2015.08.076
30.
HeJY, WangH, WuY, Precipitation behavior and its effects on tensile properties of FeCoNiCr high-entropy alloys. Intemetallics. 2016;79:41–52. doi: 10.1016/j.intermet.2016.09.005
RenB, LiuZX, LiDM, Corrosion behavior of CuCrFeNiMn high entropy alloy system in 1 M sulfuric acid solution. Mater Corros.2011;63:828–834.
33.
QiuY, ThomasS, GibsonMA, Corrosion of high entropy alloys. NPJ Mater Degrad.2017;1:15. doi: 10.1038/s41529-017-0009-y
34.
IlevbareGO, BursteinGT.The inhibition of pitting corrosion of stainless steels by chromate and molybdate ions. Corros Sci.2003;45:1545–1569. doi: 10.1016/S0010-938X(02)00229-9
35.
MarshallP, BursteinG.Effects of alloyed molybdenum on the kinetics of repassivation on austenitic stainless steels. Corros Sci.1984;24:463–478. doi: 10.1016/0010-938X(84)90071-4
36.
NewmanR.The dissolution and passivation kinetics of stainless alloys containing molybdenum coulometric studies of Fe-Cr and Fe-Cr-Mo alloys. Corros Sci.1985;25:331–339. doi: 10.1016/0010-938X(85)90111-8
37.
QiuXW, HuangCX, WuMJ, Structure and properties of AlCrFeNiCuTi six principal elements equimolar alloy. J Alloy Compd.2016;658:1–5. doi: 10.1016/j.jallcom.2015.10.224
38.
QiuXW.Microstructure, hardness and corrosion resistance of Al2CoCrCuFeNiTix high-entropy alloy coatings prepared by rapid solidification. J Alloys Compd.2018;735:359–364. doi: 10.1016/j.jallcom.2017.11.158
39.
HsuYJ, ChiangWC, WuJK.Corrosion behavior of FeCoNiCrCux high-entropy alloys in 3.5% sodium chloride solution. Mater Chem Phys. 2005;92:112–117. doi: 10.1016/j.matchemphys.2005.01.001
40.
LeeCP, ChangCC, ChenYY, Effect of the aluminium content of AlxCrFe1.5MnNi0.5 high-entropy alloys on the corrosion behaviour in aqueous environments. Corros Sci.2008;50:2053–2060. doi: 10.1016/j.corsci.2008.04.011
41.
LeeCP, ChenYY, HsyCY, Enhancing pitting corrosion resistance of AlxCrFe1.5MnNi0.5 high-entropy alloys by anodic treatment in sulfuric acid. Thin Solid Films. 2008;517:1301–1305. doi: 10.1016/j.tsf.2008.06.014
42.
YeX, MaM, CaoY, The property research on high-entropy alloy AlxFeCoNiCuCr coating by laser cladding. Phys Procedia. 2011;12:303–312. doi: 10.1016/j.phpro.2011.03.039
43.
ChouYL, YehJW, ShihHC.The effect of molybdenum on the corrosion behaviour of the high-entropy alloys Co1.5CrFeNi1.5Ti0.5Mox in aqueous environments. Corros Sci.2010;52:2571–2581. doi: 10.1016/j.corsci.2010.04.004
44.
YeQF, FengK, LiZG, Microstructure and corrosion properties of CrMnFeCoNi high entropy alloy coating. Appl Surf Sci.2016;396:1420–1426. doi: 10.1016/j.apsusc.2016.11.176
