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Roll forming and heat treatment method of Ti2AlNb-based alloy cartridge receiver ring element

A heat treatment method and alloy-based technology, applied in metal rolling, metal rolling, etc., can solve problems such as forging cracking and poor forgeability of alloys, and achieve the effect of small deformation resistance and easy forming of alloys

Active Publication Date: 2014-11-12
GUIZHOU ANDA AVIATION FORGING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ti 2 Although the AlNb-based alloy has many advantages, it has a fatal weakness, that is, the forgeability of the alloy is very poor, and it is very easy to cause forging cracks if it is not well controlled.

Method used

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Effect test

specific Embodiment approach

[0020] Implement the Ti of the present invention 2 The rolling forming and heat treatment methods of AlNb-based alloy casing rings require high-temperature heating furnaces, presses, manipulators, ring rolling mills and other equipment. The specific implementation is as follows:

[0021] The material used is Ti 2 AlNb-based alloy, its nominal chemical composition is: Ti-22Al-25Nb.

[0022] The Ti 2 The production steps of the AlNb-based alloy casing ring are as follows:

[0023] Ti after billeting 2 AlNb alloy rods were placed in a high-temperature heating furnace and heated to 1050°C for 80 minutes, then placed on a press, and heated at 0.01S -1 Ti 2 AlNb-based alloy casing ring blank. Using aluminum silicate fiber on Ti 2 After the AlNb-based alloy casing ring blank is wrapped, it is heated to 980°C and kept at 0.01S -1 Rolling is carried out at a strain rate of 900°C, the process is divided into 3 fires, and the total deformation during the rolling process is 25%. ...

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Abstract

The invention discloses a roll forming and heat treatment method of a Ti2AlNb-based alloy cartridge receiver ring element. The roll forming and heat treatment method comprises the following steps that a Ti2AlNb alloy bar subjected to cogging is loaded into a high-temperature heating furnace to be heated to 1000 DEG C to 1050 DEG C, after the heat preservation is carried out for 80 minutes, the upsetting and the drawing out are carried out at a strain rate being 0.01S<-1>, then, the upsetting and the punching are carried out, and a Ti2AlNb-based alloy cartridge receiver ring blank is obtained; the Ti2AlNb-based alloy cartridge receiver ring blank is rolled at a strain rate being 0.01S<-1>, the rolling process is completed in the heating times being 3 to 5, the lowest temperature in each heating time is 900 DEG C, and the total deformation quantity in the rolling process is 25 percent to 45 percent; after the forging, the Ti2AlNb-based cartridge receiver ring element is subjected to solid solution and aging heat treatment. The roll forming and heat treatment method has the advantages that the Ti2AlNb-based alloy cartridge receiver ring element can be formed at lower deformation temperature, and in addition, fine crystal and basket-weave microstructures with excellent performance are obtained.

Description

technical field [0001] The invention relates to a rolling forming and heat treatment method of casing rings, in particular to a Ti 2 Roll forming and heat treatment method of AlNb-based alloy casing ring. Background technique [0002] Ti 2 AlNb-based alloy is a new type of lightweight high-temperature structural material. It is an intermetallic compound composed of Ti, Al and Nb. This type of alloy has O phase, B2 / β phase and α phase. 2 The phase is a two-phase or three-phase composite structure, which has the advantages of low density, high elastic modulus, high temperature strength, high fracture performance, high creep resistance, low thermal expansion performance, non-magnetic properties and good flame retardancy. Compared with high-temperature titanium alloys, it has higher service temperature, creep resistance and high-temperature strength, and its density and thermal expansion coefficient are significantly lower than nickel-based superalloys. It is the best substitu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21H1/06B21B3/00C22F1/18
Inventor 魏志坚杨晋王莹邹朝江高先模吴涛杨文宇付绪楷
Owner GUIZHOU ANDA AVIATION FORGING
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