A kind of preparation method of metal material

A metal material, punch technology, applied in the direction of metal extrusion dies, etc., to achieve the effect of strong structure refinement, uniform deformation, and uniform grain size distribution

Active Publication Date: 2022-03-08
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is how to prepare large-sized uniformly deformed metal nanomaterials that meet the requirements of industrial applications and simplify the processing technology, and provide a method for preparing metal materials

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  • A kind of preparation method of metal material
  • A kind of preparation method of metal material
  • A kind of preparation method of metal material

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Embodiment Construction

[0028] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associa...

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Abstract

The invention discloses a method for preparing a metal material, comprising: horizontally placing the metal material to be prepared between the concave mold and the wave surface of the convex mold, the press is connected with the convex mold, and the convex mold is used to press the The metal material is pressed so that the metal material is in full contact with the male die and the concave die, and the pressed metal material is ejected and turned horizontally and then placed in the wave of the female die and the male die. Between the surfaces, repeat the pressing and turning process until the strain accumulation of the metal material meets the requirements, and then take out the deformed metal material after being flattened by a plane mold. The invention can prepare large-sized nanomaterials; the structure refinement ability is stronger, the deformation is more uniform, and the processing process is simpler; macroscopic texture defects do not occur, and nanomaterials with uniform and isotropic grain size distribution can be obtained.

Description

technical field [0001] The invention relates to the field of preparation of metal nanomaterials, in particular to a preparation method of large-sized uniformly deformed metal nanomaterials. Background technique [0002] Grain refinement, as the most important strengthening method of metal materials, has always been a research hotspot in the field of metals. However, traditional casting, extrusion, rolling and other preparation processes are difficult to achieve ultra-fine grain or nanometerization of metal materials. At this stage, there are mainly two ways to achieve substantial refinement of metal materials: top-down and bottom-up. The bottom-up method refers to the refinement of the structure by regulating the metal solidification process, such as electrodeposition and gas condensation. The top-down method mainly refers to large plastic deformation, mainly including high-pressure torsion, molding, equal-diameter angular extrusion, reciprocating extrusion, cumulative rol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/00B21C25/02
CPCB21C23/001B21C25/02B21D13/10B21D13/02
Inventor 陈飞吴广善
Owner SHANGHAI JIAOTONG UNIV
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