Aluminium base amorphous composite powder as well as preparation method and application thereof

A composite powder and aluminum-based technology, which is applied in the field of amorphous materials, can solve the problems of low thermal stability and limited application of amorphous alloys, and achieve the effects of guaranteed performance, good thermal stability, and a wide range of components
CN102632232AInactive Publication Date: 2012-08-15UNIV OF JINAN
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2012-08-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an aluminium base amorphous composite powder, comprising the following four elements in atomic percent: 86-89.8% of aluminium, 5-7% of nickel, 5-7% of yttrium and 0.2-0.5% of carbon. The invention also discloses a mechanical alloying preparation method of the amorphous powder and an aluminium base bulk amorphous alloy obtained by adopting a powder consolidation forming method while the amorphous powder is utilized. A carbon element material with high thermal stability is doped, and reasonable composition proportion is adopted, thus thermal stability of the amorphous alloy is unprecedentedly improved, glass transition temperature and initial crystallization temperature are respectively adjusted and increased to 945K and 1063K, and an enhancement effect is obvious. The preparation method has a simple process and low cost, the prepared bulk amorphous alloy can guarantee performances of bulky amorphous alloys, and reliable technological parameters are provided for industrial production of the aluminium base amorphous alloy in future.
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Description

technical field

[0001] The invention relates to an aluminum-based amorphous composite powder with high thermal stability, a preparation method thereof and the application of the amorphous composite powder to prepare bulk amorphous alloys, belonging to the technical field of amorphous materials. Background technique

[0002] Amorphous alloy, also known as metallic glass, refers to a metal or alloy with an amorphous structure similar to glass. It has the metastable structural characteristics of short-range order and long-range disorder. It is a new type of metal material. Amorphous alloys have high strength, high toughness, good wear resistance, corrosion resistance, and ideal magnetic properties, and have attracted widespread attention in the material industry.

[0003] Aluminum-based amorphous alloys have been widely concerned due to their excellent properties such as high specific strength and low density. In 1965, Predecki et al. first obtained Al-based amorphous alloys (A...

Claims

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