Beryllium aluminum alloy discharging plasma sintering preparation method

A technology of discharge plasma and discharge plasma, which is applied in the field of metallurgical manufacturing of non-ferrous metal materials, can solve the problems of difficult densification, high sintering temperature, and long sintering time, and achieve the effect of fine structure, low sintering temperature and simple process
CN108486397AInactive Publication Date: 2018-09-04MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
Publication Date
2018-09-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a beryllium aluminum alloy discharging plasma sintering preparation method, which comprises the following steps of mixing beryllium powder and aluminum alloy power according to the design ingredient proportion; charging the mixed materials into a soft mold; making the materials into a cold pressing blank through cold isopressing; charging the cold pressing mold into a graphite mold; then, putting the graphite mold into an SPS furnace body; performing vacuum pumping and pressurization; performing discharging plasma sintering. Compared with other preparation methods, themethod has the advantages that the work procedure is simple; the sintering temperature is low; the sintering time is short; the tissue is fine and uniform; the mechanical performance is good. The beryllium aluminum alloy powder metallurgy process is simplified; the production efficiency is improved; in addition, the method is hopeful to be applied to the field of aerospace. The beryllium aluminumalloy can select a polynary aluminum alloy system; the beryllium aluminum alloy meeting different service condition requirements can be prepared according to the characteristics of the aluminum alloyin different series.
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Description

technical field

[0001] The invention belongs to the technical field of metallurgical manufacturing of nonferrous metal materials, and relates to a preparation method of beryllium aluminum alloy. Background technique

[0002] Beryllium has the characteristics of low density, high melting point, high rigidity, low thermal neutron absorption cross section, excellent thermal performance, high infrared reflectivity, and good X-ray penetration, but it is brittle and difficult to process, and it is difficult to make complex structural parts . Developing composites with plastic matrices could improve beryllium's room-temperature brittleness approach. In the 1960s, NASA devoted itself to the development of plastic beryllium-based materials, and successfully developed a series of beryllium-aluminum alloys. The research on beryllium aluminum alloys first began in 1961, and Fenn et al. reported the performance of a series of beryllium aluminum alloys with an aluminum content of 24wt%~...

Claims

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