NANO GRAINED TITANIUM ALLOY HAVING LOW TEMPERATURE SUPERPLASTICITY AND MANUFACTURING METHOD OF THE SAME

摘要

The present invention relates to a nanocrystalline titanium alloy and manufacturing method whereby for preparing a nanocrystalline titanium alloy having excellent properties by performing a processing ECAP (equal channel angular pressing) on ​​the titanium alloy materials. The production method of the present invention is a nanocrystalline titanium alloy in accordance with, the processing by introducing the titanium alloy material to a channel (channel) of the bending device ECAP. If more specifically, the method of producing nanocrystalline titanium according to the present invention, includes a preparation step, and ECAP process comprising at least two times performing the ECAP process in isothermal conditions with the titanium alloy material to prepare a titanium alloy material . Here, in the ECAP process step, when the second and subsequent processing of the ECAP ECAP for the previous processing is processed by introducing the titanium alloy material to a rotating state based on a center axis passing through the center of the channel inlet. ; Titanium alloys, ECAP (equal channel angular pressing), lamellar structure, static isometric organizations