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A kind of preparation method of multi-grain scale multilayer magnesium alloy

A technology for magnesium alloys and deformed magnesium alloys, applied in chemical instruments and methods, lamination, and layered products, etc., can solve problems such as poor deformation ability of magnesium alloys, single components of mixed crystal materials, and difficulty in controlling interface oxidation

Active Publication Date: 2021-09-14
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the poor deformability of the magnesium alloy itself, the lamellar Mg / Al alloy prepared by accumulative lamination needs to be carried out at high temperature, and there are technically the following problems: (1) it is difficult to control the oxidation of the interface; (2) high temperature It is easy to make the grain size grow, and it is impossible to obtain nano-scale or sub-micron grains; (3) The strengthening and toughening properties of layered Mg / Al composite materials have obvious directionality, which limits their use in many-to-many Application to parts with force requirements
However, the mixed crystal material prepared in this way has a single component and poor heat resistance

Method used

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  • A kind of preparation method of multi-grain scale multilayer magnesium alloy
  • A kind of preparation method of multi-grain scale multilayer magnesium alloy
  • A kind of preparation method of multi-grain scale multilayer magnesium alloy

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Embodiment Construction

[0023] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0024] like Figure 1-4 As shown, taking the solid rare earth magnesium alloy Mg-Gd-Y and the liquid deformable magnesium alloy AZ31 as examples, the detailed implementation and specific operations are given. The following examples involve four steps including: pretreatment, casting, rolling, Multi-grain scale formation where:

[0025] like figure 1 As shown, the surface of the solid Mg-Gd-Y plate is chemically cleaned to remove surface oil and oxides, and then the surface is galvanized. The galvanized layer is electroplated, and the thickness of the zinc layer is 30 μm. The treated solid Mg-Gd-Y is preset in th...

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Abstract

The invention discloses a preparation method of a multi-grain-scale multilayer magnesium alloy, which includes four steps of pretreatment, casting, rolling, and multi-grain scale formation. Two or more rare earth magnesium alloys and deformed magnesium alloys are selected. , and perform solid-liquid inlay casting to form a multilayer composite magnesium alloy. Then, through rolling and subsequent annealing treatment, multi-grain scales are formed between each layer, and a large multi-grain size strengthened layer heterogeneous magnesium alloy composite material is obtained.

Description

technical field [0001] The present invention relates to a method for preparing a multi-layered magnesium alloy with a multi-grain scale, specifically a method for preparing magnesium alloys with inlay casting, solid-liquid combination of two or more magnesium alloys with different grain refinement behaviors, and a method for manufacturing The obtained material is subjected to plastic deformation and heat treatment to control the microstructure, and a method for preparing a large multi-grain scale multilayer magnesium alloy. Background technique [0002] Magnesium alloy is the lightest metal structure material in practical application. It has the advantages of high specific strength, high specific modulus, high damping and vibration reduction and electromagnetic shielding performance, as well as excellent casting and cutting performance and easy recycling. Aerospace, automobiles, electronic communications and other industrial fields are being increasingly widely used. Compar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/06B22D19/16B32B37/10B32B37/06B32B38/00
CPCB22D19/16B32B37/06B32B37/10B32B38/0036C22F1/06
Inventor 陈雪飞周浩高波潘志驿曹阳聂金凤李玉胜
Owner NANJING UNIV OF SCI & TECH
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