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Hot machining method for thinning Ti2AlNb-based alloy grains

A technology of hot working and base alloy, applied in the field of hot working of Ti2AlNb base alloy, can solve the problem of coarse structure, etc., and achieve the effect of simple equipment

Inactive Publication Date: 2012-10-03
辽宁峰阁钛业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is to solve the problem of Ti prepared by the prior art 2 AlNb-based alloys have a coarse as-cast structure, and provide a refined Ti 2 Hot Working Method of AlNb-Based Alloy Grains

Method used

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  • Hot machining method for thinning Ti2AlNb-based alloy grains
  • Hot machining method for thinning Ti2AlNb-based alloy grains
  • Hot machining method for thinning Ti2AlNb-based alloy grains

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Experimental program
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specific Embodiment approach 1

[0015] Specific implementation mode 1: This implementation mode prepares fine Ti 2 The specific operation steps of the AlNb-based alloy plate are as follows:

[0016] 1. Preparation of alloy ingots: ①Arrangement of furnace charge: first put the sponge titanium at the bottom of the water-cooled copper crucible, and then add Al-Nb master alloy, sponge titanium, Al-Mo master alloy, sponge titanium, Al- V intermediate alloy and titanium sponge, and finally put aluminum with a purity ≥ 99.8% on the top of the water-cooled copper crucible; ②Smelting: After the charge is arranged, the water-cooled copper crucible is evacuated to a vacuum degree of 6×10 -2 10×10 -2 mbar, in a vacuum state, raise the temperature in the water-cooled copper crucible from room temperature to 1800 ℃ ~ 1900 ℃, and the charge in the water-cooled copper crucible is completely melted; Pouring into a steel mold within 4 to 6 minutes, and then vacuum cooling to room temperature with a water-cooled copper cruci...

specific Embodiment approach 2

[0023] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one, the water-cooled copper crucible is evacuated, and the vacuum degree reaches 8×10 -2 mbar. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that it is kept warm for 5 minutes under the action of electromagnetic stirring as described in Step 1. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a hot machining method for thinning Ti2AlNb-based alloy grains, and relates to the field of machining of Ti2AlNb-based alloy. The method solves the problem of rough cast structure of the Ti2AlNb-based alloy prepared in the prior art. The method comprises the following steps of: 1, preparing an alloy cast ingot; 2, performing compactness treatment; 3, performing multi-step forging; and 4, performing pack rolling. The invention has the advantages that: 1, the method can be used for preparing three-dimensional large-size Ti2AlNb-based alloy plates; 2, the equipment is simple and low in cost, and the process is easily realized; and 3, large-batch production can be realized. The method is mainly used for preparing thinned Ti2AlNb-based alloy plates.

Description

technical field [0001] The present invention relates to a kind of Ti 2 Hot working field of AlNb-based alloys. Background technique [0002] In recent years, with the further development of material science and the impact of the energy crisis, especially the development of cutting-edge technologies such as aviation, aerospace, and atomic energy, people have put forward higher and higher requirements for the performance of materials. The plasticity and high-temperature strength of ceramics, and the toughness is higher than that of ordinary ceramics, so it is recognized as the most promising new high-temperature structural material between superalloys and ceramics, and has become a new type of structural material that has been developed and applied in recent years. It is predicted that more than 20% of the components in the next generation of aircraft engines may be made of intermetallic compounds, and these metals can also be used in ground equipment. At present, the three ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18C22F1/00
Inventor 沈军黄永江冯艾寒李渤渤
Owner 辽宁峰阁钛业集团有限公司