Journal of Materials Engineering

Effect of microscale W elements on microstructure and properties of CoCrFeNiMnAl high entropy alloys

Hao ZHANG, Hao WU, Xiaotian TANG, Tao LUO, Renqin DENG

Journal of Materials Engineering, 2022, 50(3): 50-59. DOI: 10.11868/j.issn.1001-4381.2021.000748

Alloy	Corrosion potential/V	Corrosion current density/(A·cm^-2)	Corrosion rate/(mm·a^-1)
W_0.12-HEA	-0.390	6.08×10^-6	0.126
W_0.15-HEA	-0.394	3.93×10^-6	0.088
W_0.19-HEA	-0.442	1.72×10^-6	0.038

Table 4 Corrosion potential, corrosion current density and corrosion rate of W_x-HEA (x=0.12, 0.15, 0.19) alloys

Other figure/table from this article

Table 1 Molar ratio of elements in CoCrFeNiMnAlW_x with different W contents
Fig.1 Diagram of thermite reaction device^[23]
Fig.2 XRD patterns of W_x-HEA(x=0.12, 0.15, 0.19) alloys (a) and lattice constant of BCC1 and BCC2 phases(b)
Fig.3 SEM images of W_0.12-HEA(a), W_0.15-HEA(b) and W_0.19-HEA(c) alloys
Fig.4 Element distribution images of W_0.12-HEA(a), W_0.15-HEA(b) and W_0.19-HEA(c) alloys
Table 2 Chemical composition of W_x-HEA(x=0.12, 0.15, 0.19) alloys
Fig.5 Hardness of W_x-HEA (x=0.12, 0.15, 0.19) alloys
Fig.6 Friction coefficient-time curves (a) and average wear volume (b) of W_x-HEA (x=0.12, 0.15, 0.19) alloys
Table 3 Friction coefficient and wear rate of W_x-HEA (x=0.12, 0.15, 0.19) alloys
Fig.7 Surface morphologies of W_0.12-HEA(a), W_0.15-HEA(b) and W_0.19-HEA(c) alloys after wear test
Fig.8 Dynamic potential polarization curves of W_x-HEA (x=0.12, 0.15, 0.19) alloys
Fig.9 Schematic diagrams of BCC1 and BCC2 phase structure distributions in microstructure with different W element contents (a)x=0.12;(b)x=0.15;(c)x=0.19