Boron nitride reinforced multi-element heat-resistant magnesium alloy and preparation method thereof

A technology of magnesium alloy and boron nitride, which is applied in the field of boron nitride reinforced multi-component heat-resistant magnesium alloy and its preparation, can solve the problems of difficult machining, high cost, complicated process, etc., and achieve good machining performance and manufacturing process steps Simple, promising effects

Active Publication Date: 2014-04-09
宏辉磁电科技(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Fiber-reinforced magnesium alloys have disadvantages such as complex process, high cost, and difficult machining, which limit their application

Method used

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  • Boron nitride reinforced multi-element heat-resistant magnesium alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A boron nitride-reinforced multi-component heat-resistant magnesium alloy, containing: Gd: 0.55%, Al: 3.4%, Zn: 1.75%, Si: 4.2%, Ca: 0.93%, Sr: 1.02%, Nd: 0.88%, Zr: 0.17%, Sn: 1.6%, Be: 0.18%, Mn: 0.76%, Sb: 0.13%, Cu: 0.59%, boron nitride nanotube particles: 5.5%, and the balance is Mg. The size of the boron nitride nanotube particles is 90 μm.

[0020] The preparation method of the boron nitride reinforced multi-element heat-resistant magnesium alloy comprises 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-Si master alloy, 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, boron nitride nanotube particles;

[0022] (2) Melting: The alloy is smelted in a resistance furnace with a...

Embodiment 2

[0029] A boron nitride-reinforced multi-element heat-resistant magnesium alloy contains: Gd: 0.68%, Al: 3.54%, Zn: 1.82%, Si: 4.44%, Ca: 0.96%, Sr: 1.07%, Nd: 0.98%, Zr: 0.23%, Sn: 1.7%, Be: 0.175%, Mn: 0.89%, Sb: 0.145%, Cu: 0.67%, boron nitride nanotube particles: 8%, and the balance is Mg. The size of the boron nitride nanotube particles is 50 μm.

[0030] A boron nitride reinforced multi-component heat-resistant magnesium alloy, comprising the following steps:

[0031] (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-Si master alloy, 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, boron nitride nanotube particles;

[0032] (2) Melting: The alloy is smelted in a resistance furnace with a protective gas atmosphere....

Embodiment 3

[0039] A boron nitride reinforced multi-component heat-resistant magnesium alloy, containing Gd: 0.65%, Al: 3.55%, Zn: 1.85%, Si: 4.25%, Ca: 0.96%, Sr: 1.05%, Nd: 0.9% by weight %, Zr: 0.24%, Sn: 1.6%, Be: 0.18%, Mn: 0.85%, Sb: 0.13%, Cu: 0.75%, boron nitride nanotube particles: 12%, the balance is Mg, the nitrogen The size of boron oxide nanotube particles is 10 μm.

[0040] The preparation method of the boron nitride reinforced multi-element heat-resistant magnesium alloy comprises the following steps:

[0041] (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-Si master alloy, 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, boron nitride nanotube particles;

[0042] (2) Melting: The alloy is smelted in a resistance ...

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Abstract

The invention provides a boron nitride reinforced multi-element heat-resistant magnesium alloy which comprises the following components in percentage by weight: 0.5-0.7% of Gd, 3.35-3.6% of Al, 1.7-1.95% of Zn, 4.0-5.0% of Si, 0.9-1.0% of Ca, 1.0-1.1% of Sr, 0.8-1.0% of Nd, 0.1-0.3% of Zr, 1-2% of Sn, 0.15-0.20% of Be, 0.7-1.0% of Mn, 0.1-0.15% of Sb, 0.5-0.8% of Cu, 1-15% of boron nitride nanotube particles and the balance of Mg, wherein the size of the boron nitride nanotube particles is below 100 microns. The invention also provides a preparation method of the alloy. The alloy has good mechanical property.

Description

technical field [0001] The invention belongs to the field of heat-resistant magnesium alloy materials, in particular to a boron nitride-reinforced multi-element heat-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 i...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22C32/00C22C1/03C22C1/06C22F1/06
Inventor 张霞
Owner 宏辉磁电科技(安徽)有限公司
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