Process and properties of titanium-aluminum alloy vacuum diffusion bonding

Mon May 16 09:41:11 CST 2022

Ti3Al alloy has high specific strength and specific elastic modulus [1, 2], and it can still maintain high enough strength and stiffness at high temperature.

It also has excellent creep and oxidation resistance, which make it

It has become a high-temperature structural material that has been mainly developed and widely used in recent years, and is the most preferred material for practical use among Ti-Al intermetallic compounds.

Materials [3-6]. Although there are many advantages, single-phase Ti3Al intermetallic

The room temperature plasticity of the alloy is still less than 1% [7]. In order to improve its plasticity, the second phase niobium is introduced for alloying, and the obtained Ti2AlNb alloy has ideal specific strength, excellent plastic toughness and creep resistance.

Aerospace engine hot end components have considerable applications before

Scenery [8-11]. The application of Ti2AlNb alloy can realize the weight reduction of vehicles. Due to the larger atomic mass of Nb, Ti2AlNb is compared with Ti3Al

The density is high, and the two are often combined under the premise of ensuring strength and reliability.

Used together, the structure with Ti2AlNb as the ring and Ti3Al as the blade

It can better achieve the purpose of weight loss, so study Ti2AlNb and Ti3Al

connection is significant