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Preparation method of Ca (Calcium) and Ho (Holmium)-doped Mg (Magnesium) alloy

A magnesium alloy and master alloy technology, which is applied in the preparation and application of non-ferrous metal alloys, and can solve problems such as low strength and poor high temperature resistance

Inactive Publication Date: 2013-02-13
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0005] The object of the present invention is to use a new smelting technology and preparation method for magnesium alloys with poor high temperature resistance and low strength, adding alkaline earth elements during the smelting process Calcium, rare earth element holmium, made into magnesium alloy ingots to improve the high temperature resistance and strength of magnesium alloys

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  • Preparation method of Ca (Calcium) and Ho (Holmium)-doped Mg (Magnesium) alloy
  • Preparation method of Ca (Calcium) and Ho (Holmium)-doped Mg (Magnesium) alloy
  • Preparation method of Ca (Calcium) and Ho (Holmium)-doped Mg (Magnesium) alloy

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Embodiment Construction

[0079] Quantities of chemicals used in preparation are determined in pre-set ranges in grams, milliliters, millimeters, centimeters 3 is the unit of measurement.

[0080] The preparation of Ca and Ho-doped magnesium alloy ingots is carried out in a vacuum melting furnace, which is completed under heating, vacuuming, argon protection, adding calcium, holmium intermediate alloy, and external water circulation cooling; the vacuum melting furnace is a vertical The lower part of the vacuum melting furnace 1 is the furnace seat 2, and the upper part is the furnace cover 3. A sealing ring 5 and an opening and closing frame 6 are arranged between the vacuum melting furnace 1 and the furnace cover 3; the outside of the vacuum melting furnace 1 is cooled by external water circulation. 4 Surrounding; a split mold 21 is set at the left bottom of the vacuum melting furnace 1, and the upper part of the split mold 21 is a sprue 22, and a crucible support 18 is arranged at the bottom right si...

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Abstract

The invention relates to a preparation method of a Ca and Ho-doped Mg alloy. The preparation method comprises the following steps of: using Mg and Al (Aluminum) as raw materials, adding an Mg-Ca intermediate alloy and an Mg-Ho intermediate alloy, melting in a vacuum melting furnace, casting under the protection of argon to form ingots, and preparing Ca and Ho-doped Mg alloy ingots by cutting and low-temperature tempering. The preparation method of the Ca and Ho-doped Mg alloy is advanced in process, reasonable in proportion, detailed and accurate in data, environment-friendly, safe, stable and reliable; the prepared Ca and Ho-doped Mg alloy is compact in metallographic structure, and has a tensile strength up to 278MPa, a yield strength up to 167MPa and an elongation of 5.5% at a room temperature of 25 DEG C, so that the preparation method of a Ca and Ho-doped Mg alloy is ideal.

Description

technical field [0001] The invention relates to a method for preparing magnesium alloy doped with Ca and Ho, and belongs to the technical field of preparation and application of nonferrous metal alloys. Background technique [0002] Magnesium and magnesium alloys are the lightest metal structural materials, with high specific strength and specific stiffness, good electrical and thermal conductivity, magnetic shielding, damping and shock absorption, and machinability. And other industrial fields have been widely used. [0003] Although magnesium and magnesium alloys have many excellent properties, the high temperature resistance of magnesium alloys is poor and the strength is low, which seriously limits the application range of magnesium alloys. The existing rare earth magnesium alloys have good high temperature resistance, but the cost is high, so the preparation Magnesium alloys with good high temperature resistance, high strength and low cost are important topics of curre...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/03
Inventor 许并社范晋平王皓王克勤李明照
Owner TAIYUAN UNIV OF TECH
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