The invention relates to a titanium alloy and a preparation method thereof, in particular a tinb-based ultrafine and nanocrystalline titanium alloy and a preparation method thereof, especially a low-level fault energy, large-size ultrafine titanium alloy or nanocrystalline titanium alloy and a preparation method thereof, belonging to the technical field of new materials.
Microsize effects, surface interface effects, macroscopic quantum tunneling, etc., due to the unique structure of ultrafine (ι~ ι μπι) and nanocrystalline (less than 100nm) materials, It shows a series of mechanical, optical, electrical, acoustic and magnetic properties that are fundamentally different from ordinary polycrystalline and amorphous solids. For example, high energy nanomaterials, nano stealth materials, nano magnetic materials have important applications in electronic information, biological engineering, aerospace, national defense technology and daily life.
At the same time, titanium alloy has low density, high strength, corrosion resistance and other advantages. Therefore, titanium alloy materials with ultrafine/nanocrystalline have a broader application prospect. Large size ultrafine crystal/nanomaterial is an important part of nanomaterial research and development because it can better meet the requirements of industrial junction components, and the preparation technology of nanomaterial is the key to the development and application of nanomaterial.
At present, there are many methods to prepare nanomaterials, which can be generally divided into "Bottom up" synthesis method and "Top down" refinement method.
A titanium alloy and its preparation method are provided. Ultrafine titanium alloy or nanocrystalline titanium alloy can be easily obtained by optimized design of the titanium alloy components, which breaks through the limitation of existing titanium alloy nanomaterials. Further optimally, large size ultrafine or nanocrystalline titanium alloys can be easily obtained.
Further optimally, the titanium alloy component designed by the invention can obtain ultrafine titanium alloy or nanocrystalline titanium alloy without the aid of such complicated and difficult to control plastic deformation processes as equal diameter Angle extrusion, high pressure twist and emulsion folding. In particular, large size ultrafine titanium alloy or nanocrystalline titanium alloy can be obtained through low-cost preparation process, which breaks through the limitations of existing technology to prepare titanium alloy nanomaterials, reduces the difficulty of process control and manufacturing cost, improves production efficiency, and has broad application prospects.
