Heat-resistant soluble magnesium alloy and preparation method and application thereof

A technology of magnesium alloy and master alloy, which is applied in earthwork drilling, wellbore/well components, sealing/isolation, etc. It can solve the problems of not being able to obtain good high-temperature mechanical properties and soluble properties at the same time, and not having soluble properties. , to achieve the effects of improving high temperature strength and creep resistance, refining grains, and increasing elongation

Active Publication Date: 2019-08-16
重庆昱华新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The inventors have found that, from the published literature, although the disclosed heat-resistant magnesium alloys have good high-temperature mechanical properties, they do not have dissolvability, and the magnesium alloys in the prior art cannot simultaneously obtain good high-temperature mechanical properties. Performance and Solubility

Method used

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  • Heat-resistant soluble magnesium alloy and preparation method and application thereof
  • Heat-resistant soluble magnesium alloy and preparation method and application thereof
  • Heat-resistant soluble magnesium alloy and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] The heat-resistant soluble magnesium alloy described in this embodiment is a high-elongation slow-dissolving material, and the following atomic percentages are composed of elements: Lu 0.40%, Ce 0.04%, Al 0.20%, Ca 0.01%, Cu 0.10%, Ni 0.05 %, impurity elements <0.30%, and the rest is Mg.

[0065] The preparation method of the heat-resistant dissolvable alloy described in this embodiment is specifically as follows:

[0066] (1) Weigh the raw materials according to the above ratio. The above raw materials are pure magnesium ingots, pure aluminum ingots, Mg-Lu master alloys, Mg-Ce master alloys, Mg-Ca master alloys, Mg-Cu master alloys, and Mg-Ni master alloys. alloy;

[0067] (2) in CO 2 and SF 6 Under the protection of a mixed gas with a volume ratio of 200:1, melt at 720°C, hold for 60 minutes, stir for 10 minutes, and refine for 20 minutes. After refining, heat up to 780°C, stand for 40 minutes, and cast at 680°C to form a semi-continuous ingot;

[0068] (3) Take t...

Embodiment 2

[0073] The heat-resistant soluble magnesium alloy described in this embodiment is a high-elongation slow-dissolving material, and the following atomic percentages are composed of elements: Lu 0.10%, Ce 0.001%, Al 0.10%, Ca 0.001%, Cu 0.01%, Ni 0.01 %, impurity elements <0.30%, and the rest is Mg.

[0074] The preparation method of the heat-resistant dissolvable alloy described in this embodiment is specifically as follows:

[0075] (1) Weigh the raw materials according to the above ratio. The above raw materials are pure magnesium ingots, pure aluminum ingots, Mg-Lu master alloys, Mg-Ce master alloys, Mg-Ca master alloys, Mg-Cu master alloys, and Mg-Ni master alloys. alloy;

[0076] (2) in CO 2 and SF 6 Under the protection of a mixed gas with a volume ratio of 200:1, melt at 720°C, hold for 50 minutes, stir for 10 minutes, and refine for 30 minutes. After refining, heat up to 780°C, stand for 30 minutes, and cast at 680°C to form a semi-continuous ingot;

[0077] (3) Take t...

Embodiment 3

[0081] The heat-resistant soluble magnesium alloy described in this embodiment is a high-strength and fast-dissolving material, and the following atomic percentages are composed of elements: Lu 8.00%, Ce 0.05%, Al 0.60%, Ca 0.50%, Cu 1.00%, Ni 1.00%, Impurity elements <0.30%, the rest is Mg.

[0082] The preparation method of the heat-resistant dissolvable alloy described in this embodiment is specifically as follows:

[0083] (1) Weigh the raw materials according to the above ratio. The above raw materials are pure magnesium ingots, pure aluminum ingots, Mg-Lu master alloys, Mg-Ce master alloys, Mg-Ca master alloys, Mg-Cu master alloys, and Mg-Ni master alloys. alloy;

[0084] (2) in CO 2 and SF 6 Under the protection of a mixed gas with a volume ratio of 400:1, melt at 760°C, hold for 60 minutes, stir for 20 minutes, and refine for 20 minutes. After refining, heat up to 800°C, stand for 30 minutes, and cast at 700°C to form a semi-continuous ingot;

[0085] (3) Take the ...

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Abstract

The invention relates to a heat-resistant soluble magnesium alloy and a preparation method and application of the heat-resistant soluble magnesium alloy. The heat-resistant soluble magnesium alloy isprepared from the following elements comprising by atom, 0.10%-8.00% of Lu, 0.001-0.05% of Ce, 0.10%-0.60% of Al, 0.001%-0.50% of Ca, 0.01%-1.00% of Cu, 0.01%-1.00% of Ni, less than 0.30% of impurityelements and the balance Mg. Lu5Mg24, Mg2Cu, Mg2Ni, Mg12Ce, Al11Ce3 and (Mg, Al) 2Ca high-temperature phases and long period orderly-stacked LPSO phase Mg-Lu-Al and Mg-Ce-Al are formed in the magnesium alloy. The magnesium alloy has good mechanical properties at 150 DEG C, and the dissolution rate of the magnesium alloy in the 3% KCl solution at 93 DEG C is 30-100mg.cm<-2>h<-1>.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and in particular relates to a heat-resistant soluble magnesium alloy and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] At present, fracturing technology is mostly used in the process of shale oil and gas exploitation, and common components include bridge plugs and temporary plugging balls. These parts have both structural and functional functions - during fracturing, they can support or control pressure; after use, they need to dissolve naturally in the groundwater environment. Generally, the relevant parts are made of dissolvable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C1/02C22F1/06E21B33/134E21B33/13
CPCC22C23/06C22C1/02C22F1/06E21B33/134E21B33/13B22D7/005C22C23/00B22D21/007B22D21/04B22D11/049C22C1/03
Inventor 刘运腾刘聪林涛周吉学刘玉王美芳唐守秋
Owner 重庆昱华新材料科技有限公司
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