Effect of BASC and BASCA Heat Treatment on Microstructure and Mechanical Properties of TC10 Titanium Alloy

The purpose of this study is to investigate two new heat treatment processes on the mechanical properties of TC10 titanium alloy. By changing the beta annealing temperature, the variation in microstructure and mechanical properties of TC10 titanium alloy were investigated. The results showed that with the increase in beta annealing temperature the microstructure type changes from an equiaxed structure to a lamellar structure. The strength of the alloy then increases firstly, followed by a decrease, while the plasticity decreases all the time. Microstructure observation revealed that the alloy is uniformly composed of alpha phase and beta phase after the two processes. In addition, it was found that the fracture morphology of the equiaxed structure is mainly dimples, showing ductile fracture characteristics, while the fracture morphology of lamellar microstructure is mainly crystalline, showing brittle fracture characteristics. These results indicated that reasonable beta annealing temperature can be set according to different requirements to obtain different types of microstructure and mechanical properties, which expands the application field of TC10 titanium alloy.

Automated summary

The purpose of this study is to investigate two new heat treatment processes and their effects on the mechanical properties of TC10 titanium alloy. The results showed that by changing the beta annealing temperature, the microstructure type of the alloy changes from equiaxed to lamellar, leading to an increase in strength and a decrease in plasticity. The fracture morphology also differs depending on the microstructure, with equiaxed structure showing ductile fracture characteristics and lamellar microstructure showing brittle fracture characteristics. These findings suggest that different types of microstructure and mechanical properties can be obtained by setting a suitable beta annealing temperature, thus expanding the application field of TC10 titanium alloy.