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Rare earth magnesium zirconium alloy and preparation method thereof

A technology of zirconium alloy and rare earth magnesium, which is applied in the field of rare earth magnesium zirconium alloy and its preparation, can solve the problems of poor strength, heat resistance, and poor creep resistance of magnesium alloys, and achieve the promotion of wide application, less impurity content, and lower The effect of segregation

Active Publication Date: 2017-06-13
BAOTOU RES INST OF RARE EARTHS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unfavorable factors such as poor strength and heat resistance and poor creep resistance of magnesium alloys seriously hinder its application in aerospace, military, automobile and other industries. Therefore, improving the strength and heat resistance of magnesium alloys is the key to developing magnesium alloys. Important Issues of Alloy Materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of rare earth magnesium-zirconium alloy specifically includes the following steps:

[0027] Step 1: Add metal zirconium and rare earth metals into the intermediate frequency induction vacuum melting furnace, first vacuumize and then fill with inert gas protection, temperature control at 1100 ~ 1700 ℃ for smelting, smelting time 20 ~ 30 minutes, after the metal is completely melted Power-off casting to make rare earth zirconium alloy;

[0028] The chemical composition (mass percentage) of the rare earth zirconium alloy includes: zirconium 1-50%, and the rest is rare earth elements.

[0029] Step 2: Use the hydrogenation furnace to hydrogenate the prepared rare earth zirconium alloy to make powder, and the particle size of the prepared rare earth zirconium powder is 2-30 μm;

[0030] Step 3: Configure rare earth zirconium powder, rare earth metal and metal magnesium, perform secondary smelting in an intermediate frequency induction vacuum melting furnace, e...

Embodiment 1

[0034] Add metal zirconium and rare earth neodymium to the intermediate frequency induction vacuum melting furnace according to the ratio of 1:9, first vacuumize and then fill with inert gas for smelting. The temperature is controlled at 1200~1300℃ for smelting. The smelting time is 20-24 minutes until the metal is completely melted. After power failure, it is cast into neodymium-zirconium alloy. The composition of neodymium-zirconium alloy is shown in Table 1.

[0035] Table 1

[0036] Nd(%) Zr(％)C(％)O(％) 89.659.3460.0310.035

[0037] Table 1

Embodiment 2

[0039] Add metal zirconium and rare earth neodymium to the intermediate frequency induction vacuum melting furnace according to the ratio of 2:3, first vacuumize and then fill with inert gas for smelting. The temperature is controlled at 1300~1400℃ for smelting. The smelting time is 23~26 minutes until the metal is completely melted. After power failure, it is cast into neodymium-zirconium alloy. The composition of neodymium zirconium alloy is shown in Table 2.

[0040] Table 2

[0041] Nd(%) Zr(％)C(％)O(％) 59.59639.4190.0360.033

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Abstract

The invention discloses a rare earth magnesium zirconium alloy. The rare earth magnesium zirconium alloy is characterized by comprising the following chemical components in percentage by mass: 0.1-5% of zirconium, 1-20% of rare earth, and the balance of magnesium. The invention further discloses a preparation method of the rare earth magnesium zirconium alloy. The prepared rare earth magnesium zirconium alloy is excellent in strength, plasticity and creep resistance, is excellent in corrosion resistance to multiple acid, alkali and salt, and can be recycled.

Description

Technical field [0001] The invention relates to an alloy material technology, in particular to a rare earth magnesium zirconium alloy and a preparation method thereof. Background technique [0002] Magnesium alloy has low density, high specific stiffness, high elastic modulus, high damping performance, and also has excellent cutting performance, thermal conductivity and anti-electromagnetic interference characteristics. Magnesium alloys are easier to recycle than aluminum alloys and can be recycled. Therefore, magnesium alloy materials are known as "green engineering metal structural materials". As countries around the world pay more and more attention to resources and the environment, the manufacturing industry is increasingly pursuing lightweight, energy-saving, emission reduction, and comprehensive utilization of resources, which indicates that magnesium alloys will play a very important role in the field of metal materials in the future. However, the unfavorable factors such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C1/02
CPCC22C1/02C22C23/06
Inventor 吕卫东杨鹏飞陈国华刘玉宝曹钰杨正华
Owner BAOTOU RES INST OF RARE EARTHS