Preparing method of Ti Al-based alloy plate

A technology based on alloys and plates, which is applied in the field of preparation of alloy plates, can solve the problems of interstitial element contamination such as impurities such as oxygen, coarse grain structure, difficult processing and forming, etc., to avoid defects in as-cast structure, fine grain structure, Ease of plastic processing
CN101758236AInactive Publication Date: 2010-06-30HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a preparing method of a Ti Al-based alloy plate, which relates to a preparing method of an alloy plate. The present invention solves the problems that the existing Ti Al-based alloy is not easy to process into to form at room temperature; Ti Al-based alloy plates prepared by powder metallurgy technique are easy to pollute by interstitial elements with many impurities containing oxygen; and Ti Al-based alloy plates prepared by casting metallurgy technique and precision casting art have the disadvantages of crude grain structure, low strength and loose structure. In the method, pure titanium grains are piled in a steel module to obtain a multi-hole titanium prefabricated body; an Al-Si alloy casting wire is cut into block bodies; the block bodies are arranged on the multi-hole titanium prefabricated body to be sintered to obtain a Ti - Al double alloy complex body; the Ti - Al double alloy complex body is coldrolled to obtain a Ti - Al double alloy complex plate; the Ti - Al double alloy complex plate is sintered again, and is cooled to room temperature; the Ti - Al double alloy complex plate is retreated from the steel module to obtain the Ti Al-based alloy plate. The Ti Al-based alloy is processed to be formed at the room temperature, so the Ti Al-based alloy plate has the advantages of compaction, even structure, thin grain structure and high strength, and the negative effect of oxidation and impurities is reduced.
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Description

technical field

[0001] The invention relates to a method for preparing alloy plates. Background technique

[0002] Due to its light weight, high strength, outstanding creep resistance and oxidation resistance, TiAl-based alloys have become very competitive materials for heat-resistant structural parts in aerospace, aviation and automobiles. With the development of the practical application of TiAl-based alloys, the requirements for preparing TiAl-based alloy sheets are becoming more and more urgent. However, TiAl-based alloys have very low plasticity and poor processing performance, so the preparation of TiAl-based alloy sheets is very difficult.

[0003] At present, most of the TiAl-based alloy plates are formed by ingot metallurgy technology (such as extrusion, forging, rolling, sheet forming), powder metallurgy technology (including molding and extrusion sintering) and precision casting technology. Powder metallurgy technology generally requires the powder to be formed b...

Claims

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