Shear punching of a Co20Cr20Fe20Ni20Mn15Cu5 high entropy alloy

In this paper, the deformation and fracture behaviors of Co20Cr20Fe20Ni20Mn15Cu5 high entropy alloy plates in the shear punching tests were studied. The fractured surfaces of the punched-out high entropy alloy discs consist of three parts, i.e., the deformation zone, the fracture zone, and the burr zone. As the ratio of clearance to the plate thickness, i.e., the relative clearance, gradually increases, the percentages of both deformation zone height and burr zone height increase. This phenomenon was attributed to the changes of stress states during shear punching process. Meanwhile, a larger relative clearance favors more plastic deformation, generating numerous slip bands and some elongated dimples on the fractured surface. (c) 2021 Elsevier B.V. All rights reserved.

Automated summary

This paper investigated the deformation and fracture behaviors of Co20Cr20Fe20Ni20Mn15Cu5 high entropy alloy plates in shear punching tests. It was found that with the increase of relative clearance, the percentages of deformation zone height and burr zone height also increased, attributed to changes in stress states during the shearing process. A larger relative clearance facilitated more plastic deformation, resulting in numerous slip bands and elongated dimples on the fractured surface.