Deformation behavior of high-entropy alloys under dual-tip probe scratching

Abstract

High-entropy alloy nanoparticles can significantly enhance catalytic hydrogen production as a low-cost electrocatalyst and may potentially play an important role in the development of hydrogen energy. To obtain array structures with higher width resolutions and more active sites, a dual-tip probe model with different nominal aspect ratios was developed using molecular dynamic methods, and studies were conducted on the nominal height variation of the probe gap, width variation, and machining angle variation. The results show that when the machining aspect ratio limit is less than 0.7 and the nominal aspect ratio is less than 2, a uniform and consistent groove structure and a complete and uninterrupted hump structure can be obtained, and the distribution of defects on both sides of the probe is nearly symmetrical, thereby improving the mechanical properties of the machined structure. It is possible to improve the flow of the material with dual tips and to obtain hump structures with different morphologies by rotating the angular processing. This study helps to obtain continuous hump structures and excellently symmetrical nanogroove arrays, which is significant for promoting the practical application of structured probes.