METHOD for HEAT TREATMENT OF hypoeutectic cast titanium composites of Ti-Si-Al-Zr system

摘要

A method for heat treatment for improving cyclic crack resistance of hypoeutectic cast titanium composites of Ti-Si-Al-Zr system on air and in corrosion medium includes heating the material to a predetermined temperature, holding at this temperature for a predetermined time and cooling to room temperature. The material is heated and maintained at a temperature above α→&bgr;– transformation in titanium matrix, and rapidly cooled to ensure the lamellar structure of the material matrix.