Preparation method of casting high-strength rapid-corrosion magnesium alloy

A rapid corrosion, high-strength technology, applied in the field of metal alloy materials, can solve the problems of increased cost, time-consuming and labor-intensive, complicated process, etc., and achieve the goal of increasing corrosion sites, increasing strength and corrosion rate, and improving mechanical properties and corrosion rate Effect

Active Publication Date: 2019-06-25
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method for preparing cast high-strength and rapidly corroding magnesium alloys in order to solve the problem that the existing process of eliminating fracturing balls is complex and time-consuming and laborious and increases costs

Method used

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  • Preparation method of casting high-strength rapid-corrosion magnesium alloy
  • Preparation method of casting high-strength rapid-corrosion magnesium alloy
  • Preparation method of casting high-strength rapid-corrosion magnesium alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A high-strength and fast-corrosion magnesium alloy in as-cast state, the chemical composition of the magnesium alloy is (mass percentage): 6% Al, 1% Ge, and the balance is magnesium.

[0025] The preparation method of the as-cast high-strength rapid corrosion magnesium alloy preparation method comprises the following steps:

[0026] (1) Pre-treat the magnesium ingots and aluminum ingots respectively: Cut the magnesium ingots and aluminum ingots into small pieces of 100mm×30mm×20mm respectively, and remove oxides and oil stains on the surface according to conventional methods, and then wash them with absolute alcohol After cleaning, dry at a temperature of 90°C to constant weight to obtain pretreated magnesium ingots and aluminum ingots;

[0027] (2) Pretreatment of germanium grains: remove oxides and oil stains on the surface of germanium grains according to conventional methods, then clean them with anhydrous alcohol, and dry them at a temperature of 90°C to constant w...

Embodiment 2

[0033] A high-strength fast-corrosion magnesium alloy in the as-cast state, the alloy product is composed of the following components in weight percentage (g / g): 6% Al, 3% Ge, and the balance is magnesium.

[0034] The preparation steps are as in Example 1.

[0035] The compressive strength of the prepared magnesium alloy is 399Mpa, and the corrosion rate is 442mm / a.

Embodiment 3

[0037] A high-strength fast-corrosion magnesium alloy in the as-cast state, the alloy product is composed of the following components in weight percentage (g / g): 6% Al, 5% Ge, and the balance is magnesium.

[0038] The preparation steps are as in Example 1.

[0039] The compressive strength of the prepared magnesium alloy is 391Mpa, and the corrosion rate is 483mm / a.

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Abstract

The invention relates to the technical field of metal alloy materials, and particularly relates to a preparation method of casting high-strength rapid-corrosion magnesium alloy. The method comprises the following steps: (1) correspondingly preprocessing a magnesium ingot and an aluminum ingot; (2) preprocessing germanium particles; (3) smelting the preprocessed magnesium ingot and the aluminum ingot; (4) adding the germanium particles after smelting so as to obtain a smelted material; and (5) cooling the smelted material; then pouring; and naturally cooling the casting ingots until room temperature is reached, and thus obtaining the casting high-strength rapid-corrosion magnesium alloy, wherein the casting high-strength rapid-corrosion magnesium alloy comprises the following components inpercentage by weight: 2-8% of Al, 0.5-7% of Ge, and the balance magnesium. According to the method, the Al and Ge elements are fully utilized to improve the strength and corrosion rate of the magnesium alloy; the alloy elements of few types are added, and few alloy elements are added, so that the mechanical performance and the corrosion rate can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of metal alloy materials, in particular to a method for preparing a cast high-strength rapidly corroding magnesium alloy. Background technique [0002] Magnesium alloy is the lightest material among structural metals (density is 1.74g / cm 3 ), has the characteristics of low density and high specific strength, so it is widely used in the automotive and aerospace industries, but the high corrosion rate also limits its application. However, there are some applications where a material with a high corrosion rate is more desirable. For example, degradable frac balls used in shale gas development. In the actual engineering process, fracturing balls or fracturing ball seats, as one of the key tools of multi-stage fracturing technology, must have sufficient strength to withstand high pressure. Usually, the materials used for fracturing balls are polyetheretherketone (PEEK ), TORLON, mild steel and aluminum alloys....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C23/00C22C1/02
Inventor 卫英慧刘笑达侯利锋阴明杜华云刘宝胜
Owner TAIYUAN UNIV OF TECH
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