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Toughened intermetallic compound, preparation method of toughened intermetallic compound and apparatus

An intermetallic compound and toughening technology, which is applied in the field of toughened intermetallic compound and its preparation, can solve the problems of low material utilization rate, poor forming process, and poor feasibility of performance design, so as to improve material utilization rate and reduce Development cost, effect of ensuring internal quality

Active Publication Date: 2015-10-21
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Application Information

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Problems solved by technology

[0009] In order to solve the bottleneck problems of engineering applications such as high room temperature brittleness and poor forming process of intermetallic compounds, an object of the present invention is to provide a method for toughening intermetallic compounds
The invention effectively solves the problems that restrict engineering application in the laser powder cladding method, such as mixing of metal powder and intermetallic compound powder, low material utilization rate, poor performance design and realization feasibility, difficulty in preparing complex special-shaped structural parts and low forming accuracy, and promotes Application and popularization of intermetallic compounds in high temperature structural parts

Method used

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Embodiment 1

[0047] Attached below figure 1 And embodiment further illustrate the present invention.

[0048] Preparation:

[0049] First put the γ-TiAl intermetallic compound powder into the powder bed supply cylinder 2, put the metal Nb (or refractory metal such as Mo) wire with a diameter of 0.01 into the wire feeder 5 and send it to the wire feeder nozzle 6; fix The substrate 23 is connected to the forming platform 3, and the laser scanning vibrating mirror 9 is connected to the multi-axis linkage arm 7 through the fixed connection flange of the processing head / manipulator; the inert gas chamber 10 is filled with argon.

[0050] Then, start the forming platform 3, water cooling system 12, atmosphere control and dust removal system 11, wire feeder 5, laser generator 8, laser scanning vibrating mirror 9, multi-axis linkage arm 7, etc. through the industrial computer 1;

[0051] Requirements for working conditions before preparation: the oxygen content in the inert gas chamber 10 is les...

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Abstract

The invention provides a toughened intermetallic compound, a preparation method of the toughened intermetallic compound and an apparatus. The method includes the following steps that: intermetallic compound powder and toughening metal wires are selected as raw materials; and the intermetallic compound powder and the toughening metal wires are laid on a substrate alternately layer by layer, and are melted, so that the toughened intermetallic compound can be obtained, and preferably, the diameter of the metal wires ranges from 0.01 to 2mm. According to the invention, a metal fiber toughened intermetallic compound concept is put forward, and the power bed-based wire / power additive preparation method is provided. According to the preparation method, the metal wires are melt discretely layer by layer in each inner layer, so that metal fibers can be waved, and any metal fibers can be designed, and metal fiber toughened intermetallic compound materials or complex abnormally-shaped components thereof can be prepared directly through deposition.

Description

technical field [0001] The invention relates to the field of metal processing, in particular to a toughened intermetallic compound and its preparation method and equipment. Background technique [0002] High room temperature brittleness and poor forming process are the main obstacles to the popularization and application of intermetallic compounds. Laminated or fiber-toughened intermetallic materials are widely used at home and abroad to overcome their brittleness. The laminated material is an ultra-fine layered structure material formed by overlapping two different materials according to a certain layer spacing and layer thickness ratio. Because of its unique microstructure characteristics, it has more excellent high-temperature toughness and creep resistance. Fracture strength, fracture toughness, oxidation resistance, etc. Metal laminate toughening intermetallic compounds rely on high temperature resistant intermetallic compounds to provide high temperature strength and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y30/00B33Y10/00
Inventor 李怀学孙帆黄柏颖王玉岱丁利胡全栋
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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