Study on Process and Performance of High-entropy Cantor Alloy Lattice Structure via Selective Laser Melting

The multicomponent high entropy Cantor alloy (CoCrFeNiMn) based on FCC (face centered cubic) lattice single solid solution structure has many excellent properties such as high strength, high hardness, good corrosion resistance, oxidation resistance and good thermal stability, and has become a new research direction in the field of alloy materials. Selective Laser Melting (SLM) technology is an important additive manufacturing method and owns significant advantages in high precision, flexible manufacturing, integrated molding and other aspects. At present, SLM technology has been widely concerned in the fields of power energy, biomedicine, aeronautics and astronautics. The preparation of SLM-manufactured CoCrFeNiMn is still in the initial stage, and there are many problems to be solved. In this paper, CoCrFeNiMn was studied based on SLM technology; combined with the design and manufacture of lattice structure, the preparation, properties and micro-rod lattice structure of CoCrFeNiMn were explored by theoretical calculation, numerical simulation, model analysis and experiment from the aspects of forming mechanism, process optimization, manufacturing constraints and mechanical properties.