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Nanoparticle reinforced creep-resistant magnesium alloy and preparation method thereof

A nanoparticle and magnesium alloy technology, applied in the field of magnesium alloy materials, can solve the problem of high alloy cost and achieve high mechanical properties, high temperature creep resistance, and high corrosion resistance

Active Publication Date: 2014-03-26
广西北部湾粮油技术研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, even these applied heat-resistant magnesium alloys are limited in varying degrees due to their own problems.
For example, AE42 alloy and WE43 alloy contain high content of RE (>2.5%) and / or noble metal elements such as Y and Th, and the cost of the alloy is relatively high. It is currently only used in high-performance engines such as racing cars, and has not Widely used in automobiles

Method used

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  • Nanoparticle reinforced creep-resistant magnesium alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A nanoparticle-reinforced creep-resistant magnesium alloy, containing: Gd: 0.17%, Al: 0.66%, Zn: 1.24%, Ca: 0.37%, Sr: 0.185%, Nd: 0.235%, Zr: 0.47% by weight %, Sn: 0.865%, Be: 0.135%, Mn: 0.565%, Sb: 0.378%, Cu: 0.79%, SiC nanoparticles: 6.2%, the balance is Mg, the diameter of SiC nanoparticles is less than 50nm, and its preparation method Include the following steps:

[0021] (1) Raw material preparation: raw material preparation is carried out according to weight percentage content, and described raw material is pure Mg ingot, Mg-Gd master alloy, pure Al ingot, pure Zn, Al-Ca master alloy, Al-Sr master alloy, Mg-Nd Master alloy, Mg-Zr master alloy, pure Sn, Al-Be master alloy, Al-Mn master alloy, pure Sb, Al-Cu master alloy;

[0022] Pretreatment of nano-SiC particles: a. Pour an appropriate amount of analytical pure ethanol into the container, put a certain amount of dry SiC nanoparticles into the container, stir, and fully wet. The ratio of SiC particles to etha...

Embodiment 2

[0031] A nanoparticle-reinforced creep-resistant magnesium alloy, containing: Gd: 0.17%, Al: 0.66%, Zn: 1.18%, Ca: 0.36%, Sr: 0.125%, Nd: 0.46%, Zr: 0.435 %, Sn: 0.87%, Be: 0.10%, Mn: 0.555%, Sb: 0.38%, Cu: 0.78%, SiC nanoparticles: 5%, the balance is Mg, and the diameter of SiC nanoparticles is less than 80nm. The preparation method of the described nano-particle reinforced creep-resistant magnesium alloy comprises the following steps:

[0032] (1) Raw material preparation: raw material preparation is carried out according to weight percentage content, and described raw material is pure Mg ingot, Mg-Gd master alloy, pure Al ingot, pure Zn, Al-Ca master alloy, Al-Sr master alloy, Mg-Nd Master alloy, Mg-Zr master alloy, pure Sn, Al-Be master alloy, Al-Mn master alloy, pure Sb, Al-Cu master alloy;

[0033] Pretreatment of nano-SiC particles: a. Pour an appropriate amount of analytical pure ethanol into the container, put a certain amount of dry SiC nanoparticles into the contai...

Embodiment 3

[0042] A nanoparticle-reinforced creep-resistant magnesium alloy, containing: Gd: 0.16%, Al: 0.79%, Zn: 1.25%, Ca: 0.37%, Sr: 0.12%, Nd: 0.43%, Zr: 0.545 %, Sn: 0.86%, Be: 0.125%, Mn: 0.565%, Sb: 0.38%, Cu: 0.725%, SiC nanoparticles: 8%, the balance is Mg, and the diameter of SiC nanoparticles is less than 20nm. . The preparation method of the described nano-particle reinforced creep-resistant magnesium alloy comprises the following steps:

[0043] (1) Raw material preparation: raw material preparation is carried out according to weight percentage content, and described raw material is pure Mg ingot, Mg-Gd master alloy, pure Al ingot, pure Zn, Al-Ca master alloy, Al-Sr master alloy, Mg-Nd Master alloy, Mg-Zr master alloy, pure Sn, Al-Be master alloy, Al-Mn master alloy, pure Sb, Al-Cu master alloy;

[0044] Pretreatment of nano-SiC particles: a. Pour an appropriate amount of analytical pure ethanol into the container, put a certain amount of dry SiC nanoparticles into the co...

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Abstract

The invention provides a nanoparticle reinforced creep-resistant alloy, which contains the following components in percentage by weight: 0.15-0.2 percent of Gd, 0.5-0.8 percent of Al, 1.1-1.26 percent of Zn, 0.3-0.4 percent of Ca, 0.1-0.3 percent of Sr, 0.2-0.6 percent of Nd, 0.4-0.55 percent of Zr, 0.8-0.9 percent of Sn, 0.05-0.15 percent of Be, 0.55-0.58 percent of Mn, 0.35-0.45 percent of Sb, 0.7-0.9 percent of Cu, 4-10 percent of SiC nanoparticles and the balance of Mg, wherein the diameters of the SiC nanoparticles are less than 100 nanometers. The invention further provides a preparation method of the alloy. The alloy has high mechanical property and high creep resistance.

Description

technical field [0001] The invention belongs to the field of magnesium alloy materials, in particular to a nanoparticle-reinforced creep-resistant magnesium alloy and a preparation method thereof. Background technique [0002] As the lightest commercial metal engineering structural material, magnesium alloy is known as the "21st century" because of its light specific gravity, high specific strength and specific stiffness, strong damping and vibration reduction, excellent liquid forming performance and easy recycling. Green Structural Materials". However, at present, due to the poor high-temperature creep resistance of existing magnesium alloys, the long-term working temperature cannot exceed 120°C, making it impossible to be used in the manufacture of automotive engines and other transmission parts that require high-temperature creep performance, thus greatly hindering the development of magnesium alloys. Further applications of the alloy. It is precisely because of this t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C32/00C22C1/03C22C1/06C22F1/06
Inventor 张霞
Owner 广西北部湾粮油技术研究有限公司
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