Metal refiner for magnesium alloy and preparation method thereof

A refiner and magnesium alloy technology, applied in the field of metal material processing, can solve the problems of large size of magnesium strontium compound, poor refining effect of magnesium alloy, unstable strontium content, etc., to achieve no environmental pollution, low production cost, fine Strong chemical effect
CN101230433AInactive Publication Date: 2008-07-30CHANGSHU NANJING NORMAL UNIV DEV RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGSHU NANJING NORMAL UNIV DEV RES INST
Publication Date
2008-07-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a metal refiner for a magnesium alloy and is characterized in that the refiner adopts magnesium as the basal body and contains strontium, neodymium and lanthanum elements. The mass percentage for the alloy elements is as follows: Sr more than or equal to 5 percent and less than or equal to 30 percent, Nd more than or equal to 0.3 percent and less than or equal to 0.6 percent, La more than or equal to 0.3 percent and less than or equal to 0.6 percent and the rest is magnesium. The submicron phases of the magnesium strontium compound with a length of 0.1 to 0.8 micrometer are distributed on the basal body of the alloy. The refiner preparing method of the invention has simple technique, stable elements, no environmental pollution and low manufacturing cost. The refiner obtained from the method has an excellent service effect, which has a refining effect is 3 to 5 times of that of a common refiner under the same adding condition.
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Description

1. Technical field

[0001] The invention belongs to the technical field of metal material processing, and in particular relates to a metal refiner for magnesium alloys and a preparation method thereof, specifically a metal refiner for magnesium alloys containing a submicron magnesium-strontium compound phase and a preparation method thereof. 2. Background technology

[0002] Existing technology: At present, due to the light weight of magnesium alloy, it has higher specific strength and specific stiffness than other alloys. However, the tensile strength of magnesium alloys does not have an absolute advantage compared with other alloys, and one of the most effective ways to improve the strength and toughness of magnesium alloys is to refine the grains of magnesium alloys by using a refiner, such as using Sr-containing metals. Refining agent to refine the grains of magnesium alloys. The role of Sr is to form magnesium-strontium compounds, which serve as the basis for the nuclea...

Claims

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