A non-equiatomic FeNiCoCr high-entropy alloy with excellent anti-corrosion performance and strength-ductility synergy

Microstructural Evolution, Mechanical Properties, and Corrosion Behavior of an Al7.5Co20.5Fe24Ni24Cr24 High‐Entropy Alloy

“…Additionally, the statistic result in Figure 10c suggests that the H‐HEA has a higher content of Co(Fe,Cr) 2 O 4 complex oxides than that of the 700A‐HEA alloy, which is more stable than Co oxides. [ 47 ] Therefore, the higher content of compact Cr oxides and Co(Fe,Cr) 2 O 4 complex oxides in the passivation film gives rise to the excellent anti‐corrosion performance for the H‐HEA sample.…”

A review on Corrosion of High Entropy Alloys: Exploring the Interplay Between Corrosion Properties, Alloy Composition, Passive Film Stability and Materials Selection

“…Recently, Wu et al 45 evaluated the corrosion mechanism of a non-equiatomic FeNiCoCr alloy (Fe 40 Ni 20 Co 20 Cr 20 ) in 0.1 M H 2 SO 4 solution at room temperature. The corrosion resistance was found to be higher than that of conventional 316L stainless steel.…”

Impact of Arc‐Based Welding on the Microstructure Evolution and Mechanical Properties in Newly Developed Cr29.7Co29.7Ni35.4Al4Ti1.2 Multi‐Principal Element Alloy

“…For example, excellent performance under cryogenic conditions was obtained in a Si 8 V 2 Fe 45 Cr 10 Mn 5 Co 30 MPEA by Yang et al [ 5 ] and in a TiZrHfNb x Ta 0.2 ( x = 1, 0.4 and 0.3) by Wen et al, [ 6 ] while further analysis on the well‐studied CrMnFeCoNi alloy at low temperatures was conducted by Fu et al [ 7 ] and Li et al [ 8 ] This same material is also the focus of study under high‐temperature conditions by Zhang et al [ 9 ] Whereas resistance to high‐temperature environments was also studied in less known MPEAs such as the eutectic AlCr 1.3 TiNi 2 MPEA. [ 10 ] Beyond the focus on temperature, resistance to corrosive media is a crucial topic for the continuous evolution of these alloys as it can be found highlighted in the works of Yan et al [ 11 ] and Wu et al, [ 12 ] on the Al 0.3 Cr x FeCoNi ( x = 1.5–2.0) and FeNiCoCr MPEAs, respectively. On a different note, the performance under demanding fatigue solicitations is also a relevant mention in the literature as highlighted on the Al 0.5 CoCrFeNi MPEA by Feng et al [ 13 ] and by Picak et al [ 14 ] on the CoCrNiFeMn MPEA.…”

“…resistance to high-temperature environments was also studied in less known MPEAs such as the eutectic AlCr 1.3 TiNi 2 MPEA. [10] Beyond the focus on temperature, resistance to corrosive media is a crucial topic for the continuous evolution of these alloys as it can be found highlighted in the works of Yan et al [11] and Wu et al, [12] on the Al 0.3 Cr x FeCoNi (x = 1.5-2.0) and FeNiCoCr MPEAs, respectively. On a different note, the performance under demanding fatigue solicitations is also a relevant mention in the literature as highlighted on the Al 0.5 CoCrFeNi MPEA by Feng et al [13] and by Picak et al [14] on the CoCrNiFeMn MPEA.…”