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Method for enhancing Mg97Y2Zn1 alloy by adding zirconium

An alloy and metal technology, applied in the field of Mg97Y2Zn1 alloy plus zirconium reinforcement method, can solve the problems of complex processing process and harsh external conditions, and achieve the effect of improving the uniformity of the structure, improving the mechanical properties, and broadening the scope of application.

Active Publication Date: 2011-06-08
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that although its strength is very high, the processing equipment and process limited to rapid cooling and powder metallurgy are relatively complicated, and the external conditions are harsh, so it cannot be produced at normal temperature and pressure.

Method used

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  • Method for enhancing Mg97Y2Zn1 alloy by adding zirconium
  • Method for enhancing Mg97Y2Zn1 alloy by adding zirconium
  • Method for enhancing Mg97Y2Zn1 alloy by adding zirconium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The first step is to turn on the power of the electric furnace, put the crucible into the melting furnace to heat, and add pure magnesium ingots to the crucible and heat up the furnace for 120 minutes. After the magnesium ingots start to melt, pour SF into the melting furnace. 6 and CO 2 The mixed gas (0.3% SF6, 99.7% CO 2 ), when the temperature rises to 730℃, the Mg 97 Y 2 Zn 1 Add pure zinc, Mg~25% Y and zirconium elements respectively in the alloy, make the weight ratio of described pure zinc metal and pure magnesium ingot be 1: 27.904, the weight ratio of described magnesium~25% yttrium alloy and pure magnesium ingot The ratio is 1:2.5653, and the weight ratio of the pure zirconium metal to the pure magnesium ingot is 1:11106 respectively, and then the temperature is raised to 750° C. and kept for 20 minutes to form an alloy melt.

[0026] The second step is to add a common magnesium alloy refining agent to the molten alloy, stir for 2-4 minutes and stand still...

Embodiment 2

[0031] The first step is to turn on the power of the electric furnace, put the crucible into the melting furnace to heat, and add pure magnesium ingots to the crucible, and follow the furnace to heat up for 180 minutes. After the magnesium ingots start to melt, pour SF into the melting furnace. 6 and CO 2 The mixed gas (0.3%SF 6 , 99.7% CO 2 ), when the temperature rises to 750℃, the Mg 97 Y 2 Zn 1 Add pure zinc, Mg~25% Y and zirconium elements respectively in the alloy, make the weight ratio of described pure zinc metal and pure magnesium ingot be 1: 27.904, the weight ratio of described magnesium~25% yttrium alloy and pure magnesium ingot The ratio is 1:2.5664, and the weight ratio of the pure zirconium metal to the pure magnesium ingot is 1:9981.2 respectively, and then the temperature is raised to 750° C. and kept for 40 minutes to form an alloy melt.

[0032] The second step is to add a common magnesium alloy refining agent to the molten alloy, stir for 2-4 minutes a...

Embodiment 3

[0037]The first step is to turn on the power of the electric furnace, put the crucible into the melting furnace to heat, and add pure magnesium ingots to the crucible and heat up the furnace for 150 minutes. After the magnesium ingots start to melt, pour SF into the melting furnace. 6 and CO 2 The mixed gas (0.3%SF 6 , 99.7% CO 2 ), when the temperature rises to 740℃, the Mg 97 Y 2 Zn 1 Add pure zinc, Mg~25% Y and zirconium elements respectively in the alloy, make the weight ratio of described pure zinc metal and pure magnesium ingot be 1: 27.905, the weight ratio of described magnesium~25% yttrium alloy and pure magnesium ingot The ratio is 1:2.5652, and the weight ratio of the pure zirconium metal to the pure magnesium ingot is 1:7980.9 respectively, and then the temperature is raised to 750° C. and kept for 30 minutes to form an alloy melt.

[0038] The second step is to add a common magnesium alloy refining agent to the molten alloy, stir for 2-4 minutes and stand sti...

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Abstract

The present invention relates to a method for enhancing Mg97Y2Zn1 alloy by adding zirconium, which belongs to the technical field of metal melting and comprises the following steps: melting pure magnesium ingot and adding alloy metal to prepare an alloy melt; adding a magnesium alloy refining agent into the alloy melt; and performing cooling slagging off treatment on the alloy melt, casting the alloy melt into a metal mold, and taking out the alloy mold to perform extrusion treatment. The method effectively improves the yield strength and the tensile strength of the magnesium alloy through simplified steps so as to achieve the comprehensive improvement on the mechanical property for the Mg97Y2Zn1 alloy.

Description

technical field [0001] The present invention relates to a method in the technical field of metal smelting, in particular to a Mg 97 Y 2 Zn 1 Alloy plus zirconium reinforcement method. Background technique [0002] Magnesium alloys have broad application prospects in the automotive and aviation industries. In these industries, there are various types and large quantities of magnesium alloy structural parts, and the materials are required to have good mechanical properties. Mg 97 Y 2 Zn 1 Alloys meet the needs of the automotive and aerospace industries with their high strength, good elongation, high strain superplasticity, good thermal stability, and good high-temperature strength. At present, most of them adopt the idea of ​​process improvement to deal with Mg 97 Y 2 Zn 1 The alloy is strengthened, which increases the strength on the one hand, but reduces the elongation on the other hand. And to Mg 97 Y 2 Zn 1 Adding zirconium to the alloy changes its compositio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/06C22C1/02C22C1/06
Inventor 林凌陈彬曾小勤丁文江
Owner SHANGHAI JIAO TONG UNIV
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