A kind of titanium alloy rotary part and its preparation method

Abstract

The crystal form of a titanium alloy rotating member has diffraction peaks at the diffraction angle 2theta of 35.1+ / -0.2 degrees, 38.7+ / -0.2 degrees, 40.5+ / -0.2 degrees, 53.4+ / -0.2 degrees and 63.7+ / -0.2 degrees. Formed titanium alloy has crystal grains with the ultrafine size, metallographic phases are regularly arranged, the mechanical property is good, the Rockwell hardness HRA of the titaniumalloy reaches 48-57, the compression resistance yield strength reaches 180 MPa or above, the deformation amount is large, deformation is remarkable, products with various shapes can be manufactured easily, the product forming property is good, the product can be formed at a time with the large deformation amount, the finished product hardness is high, the product is not prone to being oxidized, and the surface is free of oxidization phenomenon; and in the material forming process, material dynamic recrystallization and recovering can occur continuously, accordingly, the breaking phenomenon isavoided, the product quality is good, no crack occurs, the texture strength is high, the borne external force is large, breaking and deformation are avoided, the toughness is good, the production efficiency is high, the preparation method is easy to implement, and the titanium alloy rotating member is worthy of application and popularization in the market.

Description

technical field [0001] The invention specifically relates to a titanium alloy rotating part and a preparation method thereof. Background technique [0002] Titanium is an important structural metal developed in the 1950s. Titanium alloys have the characteristics of low density, high specific strength, and good corrosion resistance. They are widely used in aviation, aerospace, medical, sporting goods and other fields. However, the unique hexagonal close-packed structure of titanium alloy makes its forming difficult. At present, titanium alloy rotating parts are mainly produced by cutting. Pendulum rolling forging is a special metal plastic processing method. It is a rotary forming process that undergoes continuous multiple partial forming and finally overall forming. From the perspective of its working principle and deformation law, this technology combines the advantages of high mechanical properties of ordinary forging, high surface quality of rolling process, more materi...

AI Technical Summary

Problems solved by technology

[0005] The production of titanium alloy rotating parts in the existing technology not only has low production efficiency and leads to a large amount of material waste, but also mechanical processing cannot obtain the specific metal texture required to enhance the mechanical properties of the material

[0006] From the current point of view, the grain size of titanium alloy rotary parts is large, the mechanical properties are not ideal, and it is not easy to deform. The surface of titanium alloy is easy to oxidize. The product is prone to fracture during the preparation process, and the finished product is prone to cracks. Poor ability, prone to fracture and deformation, poor toughness of finished products

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