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Synthesis, preparation and forming integrated method of NiAl alloy hook face plate component

An alloy and component technology, which is applied in the field of preparation and forming of intermetallic compound surface plate components, can solve the problems of difficult hot forming and poor plasticity, and achieve the effects of overcoming secondary deformation, convenient acquisition and streamlining of processing procedures.

Active Publication Date: 2017-08-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing NiAl alloy slabs are difficult to thermally form curved plate components due to poor plasticity, the present invention further provides an integrated method for synthesis, preparation and forming of NiAl alloy curved plate components

Method used

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  • Synthesis, preparation and forming integrated method of NiAl alloy hook face plate component
  • Synthesis, preparation and forming integrated method of NiAl alloy hook face plate component

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Experimental program
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specific Embodiment approach 1

[0020] Specific implementation mode one: combine figure 1 To illustrate, the integrated method for the synthesis, preparation and forming of a NiAl alloy curved plate component in this embodiment includes the following steps:

[0021] Step 1, raw material thickness ratio design: according to the atomic number ratio of Ni atoms and Al atoms in the NiAl alloy, calculate the thickness ratio of Ni foil and Al foil;

[0022] Step 2, surface pretreatment: surface cleaning treatment of Ni foil and Al foil;

[0023] Step 3, hot pressing: alternately stack several Ni foils and several Al foils treated in step 2 on the lower mold 13 of the hot pressing mold A, and apply a pre-pressure of 3-5 MPa to the stacked foil layers, When the temperature of the hot-pressing mold A is raised to 500°C-600°C, the pressure on the acting foil layer is increased to 5-20MPa, and the temperature is kept for 0.5-2h. laminated composite panels;

[0024] Step 4. Inflatable forming and reaction synthesis: ...

specific Embodiment approach 2

[0042] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: in step 2, Ni foil and Al foil are polished with fine sandpaper, then put them into acetone solution for ultrasonic cleaning, and then soak in distilled water 1min, take it out and dry it with cold air. Such setting ensures that the surface of Ni foil and Al foil is clean. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0043] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is: after the Ni foil and Al foil are polished with fine sandpaper in step 2, the Ni foil is treated with a NaOH solution with a volume percentage of 5% to 15%. After cleaning, perform ultrasonic cleaning in acetone solution, then soak in distilled water for 1 min, take it out and dry it with cold air; wash Al foil with a volume percentage of 5% to 15% HF solution, then perform ultrasonic cleaning in acetone solution, and then place Soak in distilled water for 1 min, take it out and dry it with cold air. Such setting ensures that the surface of Ni foil and Al foil is clean. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a synthesis, preparation and forming integrated method of a NiAl alloy hook face plate component, relates to a synthesis, preparation and forming integrated method of an intermetallic compound hook face plate component, and aims to solve the technical problem that thermoforming of the hook face plate component is difficult because the existing NiAl alloy plate blank is poor in plasticity. The synthesis, preparation and forming integrated method comprises the following main steps: I, laminating and hot pressing Ni foils and Al foils alternately to obtain a Ni / Al lamination composite board; II, carrying out hot gas bulging forming on the Ni / Al lamination composite board to obtain the demanded shape and size, and enabling the Ni foils and the Al foils to react in a hot gas bulging forming die to synthesize a Ni-Al intermetallic compound; III, taking a forming piece out of the hot gas bulging forming die and putting the forming piece in a vacuum thermal treatment furnace for high-temperature vacuum thermal treatment to enable the generated Ni-Al intermetallic compound to completely react so as to generate NiAl alloy; and IV, putting the forming piece after thermal treatment in the hot gas bulging forming die, and carrying out densification treatment under the high-pressure gas bulging action. The synthesis, preparation and forming integrated method is suitable for preparation and forming of the NiAl alloy hook face plate component.

Description

technical field [0001] The invention relates to an integrated method for the synthesis, preparation and forming of an intermetallic compound curved plate member, in particular to an integrated method for the synthesis, preparation and forming of a NiAl alloy curved plate member, and belongs to the technical field of preparation and forming of an intermetallic compound curved plate member . Background technique [0002] NiAl alloys have the advantages of high melting point, low density, high hardness, excellent oxidation resistance, and high structural stability. New high-temperature structural materials of nickel-based superalloys. NiAl alloys are also widely used as anti-oxidation and anti-corrosion coatings for superalloys. In addition, NiAl alloys have broad application prospects in the fields of making semiconductor element connection films, electrical contact materials, surface catalysis, high-temperature shape memory alloys, and nuclear industry. [0003] Common pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21D39/02B21D26/027C22F1/04C22F1/10
CPCB21C37/02B21D26/027B21D39/02C22F1/04C22F1/10
Inventor 苑世剑孙营
Owner HARBIN INST OF TECH
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