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a ti 2 Preparation Technology of Alnb-Based Alloy Ring

A preparation technology and base alloy technology, which is applied in metal rolling, metal processing equipment, mechanical equipment, etc., can solve the problems that the quality stability of ring parts cannot be fully guaranteed, so as to improve quality stability, shorten the preparation process, reduce The effect of production costs

Active Publication Date: 2021-07-02
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by the quality stability of bar metallurgy, the quality stability of rings prepared by traditional processes has not been fully guaranteed

Method used

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  • a ti <sub>2</sub> Preparation Technology of Alnb-Based Alloy Ring
  • a ti <sub>2</sub> Preparation Technology of Alnb-Based Alloy Ring
  • a ti <sub>2</sub> Preparation Technology of Alnb-Based Alloy Ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Using Ti with a diameter of 380mm 2 AlNb-based alloy ingot, the weight percentage of each composition of the alloy is Al: 11.5%, Nb: 42%, Mo: 0.5%, the balance is Ti and other unavoidable impurity elements, and the metallographic method is used to detect the β transformation point of the alloy ingot is 1060°C;

[0032] 1) Ingot billeting: heat the alloy ingot to 1200°C, keep it warm for 20 hours, and then take it out of the furnace for forging, completing one upsetting and elongation deformation, and the deformation rate is 0.1s -1 , the forging ratio of upsetting and elongating is 1.8, and the final forging temperature is not less than 1010°C; then the ingot is heated to 1105°C, and the upsetting and elongating deformation are carried out twice, and one upsetting and one drawing are completed each time , the deformation rate is 0.1s -1 , the forging ratio of upsetting and elongation is 1.8, air cooling after forging, the final forging temperature is not lower than 95...

Embodiment 2

[0042]Using Ti with a diameter of 380mm 2 AlNb-based alloy ingot, the weight percentage of each component of the alloy is Al: 10.8%, Nb: 40.5%, the balance is Ti and other unavoidable impurity elements, and the β transformation point of the alloy ingot detected by metallographic method is 1060°C;

[0043] 1) Ingot billet opening: heat the alloy ingot to 1220°C, keep it warm for 48 hours, and then take it out of the furnace for forging, completing one upsetting and elongation deformation, and the deformation rate is 0.08s -1 , the forging ratio of upsetting and elongating is both 2, and the final forging temperature is not less than 1000°C; then the ingot is heated to 1100°C, and the upsetting and elongating deformation is carried out once, the total forging ratio is 3.5, and the deformation rate 0.1s -1 , the final forging temperature is not lower than 950°C, after forging, it is air-cooled, and then the ingot is heated to 1080°C, and the upsetting and elongation deformation ...

Embodiment 3

[0053] Using Ti with a diameter of 380mm 2 AlNb-based alloy ingot, the weight percentage of each composition of the alloy is Al: 10.5%, Nb: 39%, Mo: 1.0%, Zr: 1.0%, the balance is Ti and other unavoidable impurity elements, the alloy ingot is detected by metallographic method The β phase transition point is 1050°C;

[0054] 1) Ingot billeting: heat the alloy ingot to 1200°C, heat it for 48 hours, and then take it out of the furnace for forging, completing one upsetting and elongation deformation, and the deformation rate is 0.1s -1 , the forging ratio of upsetting and elongating is both 2, and the final forging temperature is not less than 1010°C; then the ingot is heated to 1090°C, and the upsetting and elongating deformation are carried out 2 times, and one upsetting and one drawing are completed each time , the deformation rate is 0.1s -1 , the forging ratio of upsetting and elongation is both 2, air cooling after forging, the final forging temperature is not lower than 9...

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Abstract

The invention discloses a Ti 2 The preparation process of AlNb-based alloy rings, the specific steps are: 1) Ingot billeting: the alloy ingot is heated and kept warm, and then it is taken out of the furnace for forging; then the ingot is heated and subjected to 1 to 3 times of upsetting and elongating deformation , to obtain the billet after blanking in the β phase region; 2) Forging billet preparation: deform the billet at 100-20°C below the β-transition point for 2-5 times of heat deformation; then heat it to 10-40°C above the β-transition point Carry out 1-3 times of heat deformation; then carry out 3-10 times of deformation at 150-40°C below the β transformation point to the target size, and complete the preparation of the forging billet; 3) Preparation of the ring rolling billet: after the forging billet is upset Punching, reaming with horse frame, shaping to obtain ring rolling billet; 4) ring rolling forming: ring rolling billet is rolled to the target size; 5) heat treatment: performing double heat treatment of solid solution and aging to obtain Ti 2 AlNb-based alloy ring blank. This process shortens the production cycle and improves the yield and processing cost from ingot to ring.

Description

technical field [0001] The invention belongs to the field of processing titanium-based intermetallic compounds, and specifically relates to a Ti 2 Preparation process of AlNb-based alloy rings. Background technique [0002] Ti 2 As an intermetallic compound material, AlNb has a long-range ordered superlattice structure, which can ensure its strong metal bonding and excellent high temperature specific strength and creep resistance. The preferred structural material for long-term applications at 750°C. The alloy is expected to replace some high-temperature alloys in the manufacture of rotating parts or casing rings, reduce the weight of the aircraft, improve the thrust-to-weight ratio and fuel efficiency, and better meet the design requirements of high-performance and lightweight engine parts. [0003] Ti 2 AlNb-based rings usually use large-scale semi-finished bars as raw materials, and ring products are obtained through subsequent forging and ring rolling processes. due...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00B21K1/76B21H1/06C22C14/00C22C30/00C22F1/18
CPCB21H1/06B21J5/002B21K1/761C22C14/00C22C30/00C22F1/183
Inventor 赵子博王清江
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI