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650 DEG C high temperature-resistant titanium alloy material and preparation method thereof

A high-temperature titanium alloy and alloy technology, applied in the field of titanium alloy materials, can solve the problems of poor strength and plasticity, and achieve the effects of high strength and plasticity, increased content, and excellent comprehensive performance.

Inactive Publication Date: 2017-04-05
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor strength and plasticity of the high-temperature titanium alloy prepared by the existing method when it is used at 650°C, and to provide a new type of high-temperature-resistant titanium alloy material resistant to 650°C and its preparation method

Method used

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  • 650 DEG C high temperature-resistant titanium alloy material and preparation method thereof
  • 650 DEG C high temperature-resistant titanium alloy material and preparation method thereof
  • 650 DEG C high temperature-resistant titanium alloy material and preparation method thereof

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Embodiment 1

[0023] A new 650°C high-temperature resistant titanium alloy material according to the present embodiment consists of Al: 6.5%, Sn: 2.5%, Zr: 9%, Mo: 0.5%, Nb: 1%, W: 1%, Si: 0.25%, Er: 0.1% and the rest made of Ti.

[0024] The preparation method of a novel 650°C high-temperature resistant titanium alloy material according to this embodiment is carried out according to the following steps:

[0025] 1. Use zero-grade sponge titanium, high-purity aluminum, sponge zirconium, high-purity silicon, and TiSn, AlMo, AlNb, AlW, and AlEr master alloys as raw materials, weigh them, and press the weighed raw materials in a mold to form a Cylindrical blanks are convenient for later smelting preparation. Put the pressed billet into a resistance furnace and heat it to about 100°C to remove the moisture of the billet.

[0026] 2. The alloy ingot is prepared by using a water-cooled copper crucible vacuum induction suspension melting furnace. Put the pressed billet into the crucible, vacuum...

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Abstract

The invention relates to a 650 DEG C high temperature-resistant titanium alloy material and a preparation method thereof, and belongs to the field of titanium alloy materials. The 650 DEG C high temperature-resistant titanium alloy material is prepared from, by mass, 6-7% of Al, 2-3% of Sn, 8-10% of Zr, 0.4-1% of Mo, 0.5-1.2% of Nb, 0.5-1.2% of W, 0.2-0.4% of Si, 0.1-0.3% of Er, and the balance of Ti. The preparation method comprises the following steps: batching, melting, casting and isothermal forging for finally obtaining the novel high temperature titanium alloy material. The tensile strength of the prepared high temperature titanium alloy at 650 DEG C reaches 672.6 MPa, the yield strength of the high temperature titanium alloy at 650 DEG C is 538.9 MPa, the elongation of the high temperature titanium alloy at 650 DEG C is 22.9%, and the high temperature titanium alloy also has excellent room temperature strength and plasticity, excellent service performances and wide application prospect.

Description

technical field [0001] The invention relates to a novel 650°C high-temperature-resistant titanium alloy material and a preparation method thereof, belonging to the field of titanium alloy materials. Background technique [0002] High-temperature titanium alloys are widely used in the aerospace field due to their low density, high specific strength, high temperature resistance and weldability. They are mainly used in aircraft engine fans, compressor discs, blades, casings, connecting rings, etc. Aeroengine components serve in the harsh environment of high temperature, complex stress, airflow erosion, high-speed vibration, and environmental stress corrosion, and the performance requirements of their materials are very strict. In order to meet the needs of use, high-temperature titanium alloys need to have a good match between strength, plasticity, toughness, creep and fatigue properties, and have high oxidation resistance and structural stability at service temperatures. [0...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03C22F1/18
CPCC22C14/00C22C1/03C22F1/186
Inventor 陈子勇李涛柴丽华石少辉李丹丹崔永双史国栋
Owner BEIJING UNIV OF TECH
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