Device and method for preparing ultrafine grains from difficult-to-deform material

Abstract

The invention provides a device and method for preparing ultrafine grains from a difficult-to-deform material. The device comprises a die assembly, a loading device, a control system and a power supply system, wherein the die assembly is arranged in the loading device and is connected with the power supply system, and the loading device is also connected with the control system; and the die assembly comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die plate, an upper insulating plate, an upper copper electrode and an upper die which are sequentially arranged from top to bottom, the lower die assembly comprises a lower die plate, a lower insulating plate, a lower copper electrode and a lower ide which are sequentially arranged from bottom to top, the upper copper electrode and the lower copper electrode are connected with the power supply system, and the lower die plate and the upper die plate are connected through guide sleeves and guide columns. According to the device and method for preparing the ultrafine grains from the difficult-to-deform material, the ultrafine grains are easily prepared from the difficult-to-deform material,the ultrafine grains are obtained through high-temperature and high-pressure torsional deformation, the equipment structure is simple, and the deformation degree is easy to control.

Description

technical field [0001] The invention belongs to the technical field of mold forming, and in particular relates to a device and method for preparing ultrafine crystals of hard-to-deform materials. Background technique [0002] For difficult-to-deform metal materials such as titanium, magnesium, aluminum, and tungsten, grain refinement is often required due to high requirements for mechanical properties in production and manufacturing. However, it is difficult to achieve grain refinement through conventional thermomechanical processing. In addition, if equipment capable of severe deformation is installed to cause plastic deformation of the material, the structure of the equipment will be very complicated, and the conditions will be harsh, and the degree of deformation will be difficult to control. Therefore, how to use difficult-to-deform materials to prepare ultra-fine grains has become an urgent Technical problems that need to be resolved. Contents of the invention [000...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a device and method for preparing ultra-fine crystals of difficult-to-deform materials, which solves the technical problem of how to prepare ultra-fine crystals of difficult-to-deform materials, realizes ultra-fine crystals through high temperature and high pressure torsional deformation, and the equipment has a simple structure and is easy to deform. easy to control

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