Cerium lanthanum containing high-strength anti-corrosion die-casting magnesium alloy

A cerium-lanthanum and corrosion-resistant technology is applied in the field of high-strength corrosion-resistant die-casting magnesium alloys containing cerium-lanthanum, which can solve problems such as resource waste and environmental pollution, and achieve the effect of improving corrosion resistance.

Active Publication Date: 2008-07-16
白山市天安金属镁矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a large backlog of low-cost cerium-lanthanum rare earths. If these rare earths ca

Method used

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  • Cerium lanthanum containing high-strength anti-corrosion die-casting magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1 AZ91+CeLa (Ce=0.01%, La=1.0%) alloy

[0014] The composition and mass percentage of the high-strength corrosion-resistant die-cast magnesium alloy containing cerium-lanthanum rare earth are: aluminum: 9%, Zn: 0.9%, manganese: 0.2%, cerium: 0.01%, lanthanum: 1.0%, impurity element Fe≤0.02%, Cu≤0.002%, Si≤0.01%, Ni≤0.001%, and the balance is magnesium; Choose AZ91 base alloy and magnesium-20% cerium lanthanum An interalloy is used as a raw material, and the magnesium-20% cerium lanthanum intermediate alloy is 80% magnesium and 20% cerium lanthanum; The cerium-lanthanum raw material of the magnesium-cerium-lanthanum master alloy is made of cerium-lanthanum mixed rare earth after separating Nd and Pr, wherein the composition and mass percentage of the cerium-lanthanum rare earth are: Ce is 20% to 80%, La 80% to 20%.

[0015] Alloy properties are shown in Table 1 and Table 2.

[0016] Weigh the material according to the ratio, preheat the base alloy to 200°C, ...

Embodiment 2

[0017] Example 2 AZ91+CeLa (Ce-0.6%, La=0.4%) alloy

[0018] The composition and mass percentage of the high-strength corrosion-resistant die-casting magnesium alloy containing cerium-lanthanum rare earth are: aluminum: 9%, Zn: 0.9%, manganese: 0.2%, cerium: 0.6%, lanthanum: 0.4%, impurity element Fe≤0.02%, Cu≤0.002%, Si≤0.01%, Ni≤0.001%, and the balance is magnesium; Choose AZ91 base alloy and magnesium-20% cerium lanthanum An interalloy is used as a raw material, and the magnesium-20% cerium lanthanum intermediate alloy is 80% magnesium and 20% cerium lanthanum; The cerium-lanthanum raw material of the magnesium-cerium-lanthanum master alloy is made of cerium-lanthanum mixed rare earth after separating Nd and Pr, wherein the composition and mass percentage of the cerium-lanthanum rare earth are: Ce is 20% to 80%, La 80% to 20%.

[0019] Alloy properties are shown in Table 1 and Table 2.

[0020] Weigh the material according to the proportion, combine base After prehea...

Embodiment 3

[0021] Example 3 AZ91+CeLa (Ce=0.2%, La=0.3%) alloy

[0022] The composition and mass percentage of the high-strength corrosion-resistant die-cast magnesium alloy containing cerium-lanthanum rare earth are: aluminum: 9%, Zn: 0.9%, manganese: 0.2%, cerium: 0.2%, lanthanum: 0.3%, impurity element Fe≤0.02%, Cu≤0.002%, Si≤0.01%, Ni≤0.001%, and the balance is magnesium; Choose AZ91 base alloy and magnesium-20% cerium lanthanum An interalloy is used as a raw material, and the magnesium-20% cerium lanthanum intermediate alloy is 80% magnesium and 20% cerium lanthanum; The cerium-lanthanum raw material of the magnesium-cerium-lanthanum master alloy is made of cerium-lanthanum mixed rare earth after separating Nd and Pr, wherein the composition and mass percentage of the cerium-lanthanum rare earth are: Ce is 20% to 80%, La 80% to 20%.

[0023] Alloy properties are shown in Table 1 and Table 2.

[0024] Weigh the material according to the ratio, preheat the base alloy to 200°C, pu...

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Abstract

The invention relates to cerium lanthanum high-strength corrosion resistant die casting magnesium alloy and is characterized in that the components and the weight percentage of the alloy are provided as follows: 8.5 to 9.5 percent of Al, 0.4 to 0.9 percent of Zn, 0.2 to 0.6 percent of Mn, 0.01 to 1.5 percent of rare earth Ce, 0.01 to 1.5 percent of La, and impure elements of less than or equal to 0.02 percent of Fe, less than or equal to 0.002 percent of Cu, less than or equal to 0.01 percent of Si, less than or equal to 0.001percent of Ni and the allowance is magnesium. The used alloying materials are cerium lanthanum rare earths which are left after separating Nd and Pr from ordinary cerium-rich mischmetals; at present, the rare earth materials are in a position of cheapness and large overstock in the market. The cerium lanthanum high-strength corrosion resistant die casting magnesium alloy avoids the waste of the rare earth resources; the mechanical properties and plasticity of the alloy are both better than AZ91 alloy and the corrosion resistance can be improved by a plurality of times or dozens of times.

Description

technical field [0001] The invention relates to a high-strength corrosion-resistant die-casting magnesium alloy containing cerium and lanthanum, belonging to the field of metal materials. Background technique [0002] Magnesium alloy has the advantages of light specific gravity, high specific strength, good thermal conductivity, strong electromagnetic shielding ability, good vibration damping and easy recycling. The use of magnesium-aluminum light alloy instead of steel is the key to reducing weight, reducing fuel consumption and improving quality of current vehicles. measures and directions for development. With the light weight and high strengthening requirements put forward by modern industry for products, the demand for Mg-Al series magnesium alloys with excellent comprehensive properties continues to increase. This type of alloy represented by AZ91 has the advantages of excellent casting process performance, small hot cracking tendency, and low cost. It accounts for ab...

Claims

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Application Information

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IPC IPC(8): C22C23/02
Inventor 孟健张德平田政张景怀房大庆邱鑫唐定骧鲁化一杜海
Owner 白山市天安金属镁矿业有限公司
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