Unique hot deformation behavior and microstructure evolution of a dual FCC-phase CoCrCu1.2FeNi high entropy alloy

Jiang, Jufu; Huang, Maosong; Wang, Ying; Xiao, Guanfei; Liu, Yingze; Zhang, Ying

doi:10.1016/j.jallcom.2021.160102

Cited by 32 publications

(1 citation statement)

References 62 publications

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“…9 (a). The yield strength of the Cu0.3 and Cu0.5 alloys were 1015 MPa and 955 MPa, respectively, so that the present work also had advantages in specific yield strength when compared with the classic Cu-containing HEAs in mechanical response [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] , [38] . The comparison of the specific yield strength and plasticity between classic Cu-HEAs was displayed in Supplementary Figure 5.…”

Section: Resultsmentioning

confidence: 99%

Enhanced antibacterial behavior of a novel Cu-bearing high-entropy alloy

Guang-yu

Huang

et al. 2022

Journal of Materials Science & Technology

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Contact infection of bacteria and viruses has been a critical threat to human health. The worldwide outbreak of COVID-19 put forward urgent requirements for the research and development of the self-antibacterial materials, especially the antibacterial alloys. Based on the concept of high-entropy alloys, the present work designed and prepared a novel Co 0.4 FeCr 0.9 Cu 0.3 antibacterial high-entropy alloy with superior antibacterial properties without intricate or rigorous annealing processes, which outperform the antibacterial stainless steels. The antibacterial tests presented a 99.97% antibacterial rate against Escherichia coli and a 99.96% antibacterial rate against Staphylococcus aureus after 24 hours. In contrast, the classic antibacterial copper-bearing stainless steel only performed the 71.50% and 80.84% antibacterial rate, respectively. The results of the reactive oxygen species analysis indicated that the copper ion release and the immediate contact with copper-rich phase had a synergistic effect in enhancing antibacterial properties. Moreover, this alloy exhibited excellent corrosion resistance when compared with the classic antibacterial stainless steels, and the compression test indicated the yield strength of the alloy was 1015 MPa. These findings generate fresh insights into guiding the designs of structure-function-integrated antibacterial alloys.

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