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Preparation method of Ti2AlNb alloy wires

A technology for alloy wires and rods, which is applied in the field of preparation of Ti2AlNb alloy wires, can solve problems such as the inability to apply automatic repair welding processes, and achieve the effects of avoiding crack defects and improving plasticity

Active Publication Date: 2017-07-04
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, under laboratory conditions, the wire cutting method is used to cut strips on the ingot to prepare welding filler materials. Due to the length limitation, the wire prepared by this method cannot be used in the automatic repair welding process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment one, the preparation diameter is the Ti2AlNb wire material of 1.6mm, adopts the steps of the method of the present invention as follows:

[0020] 1. Pulling: the Ti2AlNb ingot with a diameter of 45mm is free forged, and the pulling is repeated twice, and the diameter of the ingot is still 45mm;

[0021] 2. Forging: Put the pier-drawn Ti2AlNb ingot into the furnace for heat treatment, the furnace temperature is 900°C, then raise the temperature to 1100°C with the furnace, keep it for 20 minutes, and then start forging, the forging temperature is 1050°C, and the final forging temperature is 950°C, according to Follow-up mill caliber requirements, to obtain forged bars with a diameter of 30mm;

[0022] 3. Rolling: The forged bar is firstly held at 930°C for 30 minutes, then heated to 980°C with the furnace, and held for 10 minutes, and then rolled. The rolling temperature is about 980°C, and the final rolling temperature is 800°C. Wire rods with a diameter of 8...

Embodiment 2

[0025] Embodiment two, the preparation diameter is the Ti2AlNb wire material of 1.2mm, adopts the steps of the method of the present invention as follows:

[0026] 1. Pier drawing: the Ti2AlNb ingot with a diameter of 60mm is free forged, and the piercing is repeated 5 times, and the diameter of the ingot is still 60mm;

[0027] 2. Forging: Put the pier-drawn Ti2AlNb ingot into the furnace for heat treatment, the furnace temperature is 900°C, then raise the temperature to 1200°C with the furnace, keep it for 20 minutes, and then start forging, the forging temperature is 1050°C, and the final forging temperature is 900°C, according to Follow-up mill caliber requirements, to obtain forged bars with a diameter of 28mm;

[0028] 3. Rolling: The forged bar is firstly held at 950°C for 30 minutes, then heated to 1050°C with the furnace, and held for 15 minutes, and then rolled. The rolling temperature is about 980°C, and the final rolling temperature is 850°C. Wire rods with a diam...

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Abstract

The invention provides a preparation method of Ti2AlNb alloy wires. The method comprises the steps that a Ti2AlNb alloy ingot is forged, rolled and annealed through a specific technology, repeated drawing is carried out according to the specific reducing amplitude, and finally the Ti2AlNb alloy wires with the needed diameter are obtained. The low-plasticity difficult-to-machine material Ti2AlNb intermetallic compound wires are prepared through the drawing technology, the high-quality Ti2AlNb wires can be obtained, batch high-quality production of the wires is achieved, and the method can be applied in the field of welding, 3D printing and the like and is wide in application prospect.

Description

technical field [0001] The invention relates to a method for preparing Ti2AlNb alloy wire, which belongs to the technical field of metal material processing. Background technique [0002] Ti2AlNb is an intermetallic compound with an ordered orthorhombic O phase as the main constituent phase. The alloy is an excellent structural material, with the characteristics of low density, high specific strength, good corrosion resistance, good creep resistance and oxidation resistance, and has great hope as a substitute material for nickel-based superalloys. Widely used in the aerospace field. However, a huge obstacle affecting its use is its low room temperature plasticity and poor thermal deformation ability. Although it is slightly better than TiAl-based alloys, it is still a difficult-to-deform material. [0003] At present, due to the characteristics of poor room temperature plasticity and difficult machining of Ti2AlNb alloy, in actual work, the main forming method of the alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/04B21C9/02C22F1/16
CPCB21C9/02B21C37/047C22F1/16
Inventor 施瀚超李建崇郑涛乔燕琦
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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