Study on the Influence of Die structure on Ultrafine Grain Materials

Ultrafine crystal materials have excellent mechanical properties and mechanical properties, the preparation of ultrafine crystal materials has been highly valued in actual production and life. Severe plastic Deformation (SPD) method is a newly developed method for the preparation of superfine crystal materials. Groove pressing (GP) method is a kind of SPD method. Compared with other methods, this method with the production process is simple, easy to operate and mass in industrial production. In this paper, through a combination of practical experiments and numerical simulation to analyse tissue samples at different mold structure deformation evolution, the cumulative amount equivalent strain, strain degree equivalent uniformly distributed load changes, as well as fine tissue after deformation of the situation, to explore the structure of the mold plate deformation of molded pure nickel. It used to guide the production and preparation of ultrafine grained plate, as well as industrialization and mass production of ultra-fine grain plate explore the law.