High performance deformed magnesium alloy

A deformed magnesium alloy, high-performance technology, applied in the field of magnesium alloy production, can solve the problems of low mechanical properties of magnesium alloys, achieve the effects of improving tensile strength and elongation, reducing supercooling, and refining grains

Active Publication Date: 2007-11-07
NANJING YUNHAI SPECIAL METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the problem of low comprehensive mechanical properties of existing magnesium alloys, providing a magnesium allo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Put 1168.8kg of magnesium ingot into the prepared clean crucible, add 18kg of RJ-2 base flux to melt, sprinkle 3.6kg of RJ-4 covering agent in the process to prevent burning, control the time within 4h, and control the final temperature of the magnesium liquid At 670°C; after melting, blow argon into the magnesium liquid, and use mechanical stirring, add 18kg of RJ-6 refining agent and 35.7kg of manganese chloride for refining at the same time, the time is controlled at 30min, and the temperature is controlled at 680°C; Refining After the completion, when the magnesium alloy liquid continues to heat up to 740°C, 14.4kg of rare earth element cerium and 1.2kg of metal element strontium are added, the time is controlled at 5min, and the temperature is controlled at 740°C; Controlled at 30min; finally under the temperature condition of 660℃, and in SF 6 +N 2 Pouring in a protective atmosphere.

[0024] Due to the process of static slag extraction of magnesium liquid and s...

Embodiment 2

[0026] Put 1165.2kg of magnesium ingot into the prepared clean crucible, add 24kg of RJ-2 base flux to melt, sprinkle 4.8kg of RJ-5 covering agent in the process to prevent burning, control the time at 5h, and control the final temperature of the magnesium liquid At 680°C; after melting, blow argon into the magnesium liquid, and use mechanical stirring, and add 24kg of RJ-5 refining agent and 49.5kg of manganese chloride for refining at the same time, the time is controlled at 30min, and the temperature is controlled at 710°C; Refining After the completion, when the magnesium alloy solution continues to heat up to 750°C, 9.6kg of rare earth element cerium and 3.6kg of metal element strontium are added, the time is controlled at 5min, and the temperature is controlled at 750°C; Controlled at 30min; finally under the temperature condition of 680℃, and in SO 2 Pouring in a protective atmosphere.

Embodiment 3

[0028] Put 1162.8kg of magnesium ingots into the prepared clean crucible, add 30kg of RJ-2 bottom flux to melt, sprinkle 6.0kg of RJ-6 covering agent in the process to prevent burning, control the time at 6h, and control the final temperature of the magnesium liquid At 690°C; after melting, blow argon into the magnesium liquid, and use mechanical stirring, add 30kg of RJ-4 refining agent and 63.2kg of manganese chloride for refining at the same time, the time is controlled at 30min, and the temperature is controlled at 740°C; Refining After the completion, when the magnesium alloy solution continues to heat up to 760°C, 3.6kg of rare earth element cerium and 6.0kg of metal element strontium are added, the time is controlled at 5min, and the temperature is controlled at 760°C; Controlled at 30min; finally under the temperature condition of 660℃, and in CO 2 Pouring in a protective atmosphere.

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PUM

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Abstract

The high performance deformable magnesium alloy has the components including Mn 1.3-2.3 %, Ce 0.4- 1.2 %, Sr 0.1-0.5 %, Si not more than 0.05 %, Fe not more than 0.004 %, Cu not more than 0.025 %, Ni not more than 0.001 %, and Mg for the rest. The magnesium alloy with increased RE elements Ce and Sr amount has high mechanical performance and is suitable for intruding production.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy production, in particular to a high-performance deformed magnesium alloy. Background technique [0002] At present, although the Mg-Mn wrought magnesium alloy produced by industrial smelting of magnesium alloy has good corrosion resistance and the best weldability, its disadvantage is that its strength is not high, that is, its comprehensive mechanical properties are low, which limits its application in the industry. Large-scale application in civil industry. Taking MB8 wrought magnesium alloy as an example (Mn: 1.5-2.5%, Ce: 0.15-0.35%), although it can also meet certain extrusion production requirements, the grains are relatively coarse, but it is difficult to meet the requirements for higher mechanical properties. Extrusion production required. Contents of the invention [0003] The technical problem to be solved by the present invention is the problem of low comprehensive mechanica...

Claims

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Application Information

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IPC IPC(8): C22C23/00
Inventor 陶卫建崔荣佟龙福王殊
Owner NANJING YUNHAI SPECIAL METALS CO LTD
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