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High strength and toughness rare earth magnesium alloy

A high-strength, high-toughness, rare-earth magnesium technology, applied in the field of magnesium alloy materials, can solve the problems of low strength and plasticity, and achieve the effect of improving strength and shaping, improving comprehensive performance and reducing quantity

Inactive Publication Date: 2012-07-04
TAIYUAN HUA YIN TAI ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve and improve the shortcomings of low strength and plasticity of Mg-Al-based alloys widely used at present, the present invention prepares a high-strength alloy on the basis of adding rare earth elements such as cerium, lanthanum, yttrium, erbium, and holmium on the basis of Mg-Al. High toughness rare earth magnesium alloy

Method used

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  • High strength and toughness rare earth magnesium alloy
  • High strength and toughness rare earth magnesium alloy
  • High strength and toughness rare earth magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 (Mg-3Al-0.2Zn-0.1Mn-0.05Ce-1La-0.1Y-2Er-0.1Ho)

[0018] The composition mass percentage of high strength and high toughness rare earth magnesium alloy is: Al: 3.0%, Zn: 0.2%, Mn: 0.1%, Ce: 0.05%, La: 1%, Y: 0.1%, Er: 2.0%, Ho is 0.1%, impurity elements Fe≤0.004%, Cu≤0.002%, Si≤0.02%, Ni≤0.001%, and the rest is magnesium. The added cerium and lanthanum elements are added in the form of a magnesium-cerium-rich master alloy. The cerium-rich master alloy in the magnesium-cerium-rich master alloy includes two elements of cerium and lanthanum. The weight percentage of the cerium-rich composition is Ce: 90%, La: 10% . The added elements of yttrium, erbium and holmium are added in the form of magnesium-yttrium master alloy, magnesium-erbium master alloy and magnesium-holmium master alloy. Its specific performance tests are shown in attached tables 1 and 2.

Embodiment 2

[0019] Example 2 (Mg-5Al-0.3Zn-0.2Mn-0.1Ce-0.8La-0.5Y-1.5Er-0.5Ho)

[0020] The composition mass percentage of high strength and high toughness rare earth magnesium alloy is: Al: 5.0%, Zn: 0.3%, Mn: 0.2%, Ce: 0.1%, La: 0.8%, Y: 0.5%, Er: 1.5%, Ho is 0.5%, impurity elements Fe≤0.004%, Cu≤0.002%, Si≤0.02%, Ni≤0.001%, and the rest is magnesium. The added lanthanum and cerium elements are added in the form of a magnesium-cerium-rich master alloy. The cerium-rich master alloy in the magnesium-cerium-rich master alloy includes two elements: cerium and lanthanum. The weight percentage of the cerium-rich composition is Ce: 60%, La: 40% . The added elements of yttrium, erbium and holmium are added in the form of magnesium-yttrium master alloy, magnesium-erbium master alloy and magnesium-holmium master alloy. Its specific performance tests are shown in attached tables 1 and 2.

Embodiment 3

[0021] Example 3 (Mg-6Al-0.4Zn-0.3Mn-0.5Ce-0.5La-1Y-1Er-1Ho)

[0022]The composition mass percentage of high strength and high toughness rare earth magnesium alloy is: Al: 6.0%, Zn: 0.4%, Mn: 0.3%, Ce: 0.5%, La: 0.5%, Y: 1.0%, Er: 1.0%, Ho is 1.0%, impurity elements Fe≤0.004%, Cu≤0.002%, Si≤0.02%, Ni≤0.001%, and the rest is magnesium. The added lanthanum and cerium elements are added in the form of a magnesium-cerium-rich master alloy. The cerium-rich master alloy in the magnesium-cerium-rich master alloy includes two elements of cerium and lanthanum. The weight percentage of the cerium-rich composition is Ce: 50%, La: 50% . The added elements of yttrium, erbium and holmium are added in the form of magnesium-yttrium master alloy, magnesium-erbium master alloy and magnesium-holmium master alloy. Its specific performance tests are shown in attached tables 1 and 2.

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Abstract

The invention belongs to the magnesium alloy material field and particularly relates to a high strength and toughness rare earth magnesium alloy. The invention solves the defects of low strength and plasticity of the Mg-Al base alloy which is widely used now. The alloy comprises the following elemental compositions by weight percent: 3-9% of Al, 0.2-0.6% of Zn, 0.1-0.5% of Mn, 0.05-1.0% of Ce, 0.05-1.0% of La, 0.1-3.0% of Y, 0.1-2.0% of Er, 0.1-2.0% of Ho, 0.004% or less of impurity element Fe, 0.002% or less of impurity element Cu, 0.02% or less of impurity element Si, 0.001% or less of impurity element Ni and the balance Mg. Through combined action of the elements and proper homogenizing treatment, the comprehensive performance of the alloy is significantly improved.

Description

technical field [0001] The invention belongs to the field of magnesium alloy materials, in particular to a high-strength and high-toughness rare earth magnesium alloy. Background technique [0002] Magnesium alloy has the advantages of light specific gravity, high specific strength and specific stiffness, good thermal conductivity, strong electromagnetic shielding ability, good vibration damping and easy recycling. It is widely used in transportation, 3C products, aerospace and other fields. With the rapid development of society, people's environmental protection pressure and energy-saving awareness are gradually increasing, which promotes the replacement of original steel and aluminum materials by lightweight magnesium-based materials to reduce weight and improve energy efficiency. Lightweight magnesium alloys represented by Mg-Al base have the advantages of excellent casting process performance, small hot cracking tendency, and low cost, and have been widely used in automo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C1/03
Inventor 魏佩宏
Owner TAIYUAN HUA YIN TAI ALLOY
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