Effects of different annealing cooling methods on the microstructure and properties of TA10 titanium alloys

Abstract

The microstructure, mechanical properties, and corrosion resistance of TA10 titanium alloy annealed via different cooling methods were investigated. After annealing, the intergranular β phase decreases, and most of the strip α phase changes to the equiaxed α phase. The grain size of the equiaxed α phase is the largest, and the content of the primary α phase is the lowest at the longest annealing cooling time. The TA10 titanium alloy sheet with furnace cooling shows better plasticity than that with air cooling. The tensile strength and Vickers hardness gradually decrease with increasing furnace cooling time, and the elongation increases Different annealing cooling methods result in the same corrosion behavior, but the corrosion resistance is different. The sample with the longest cooling time has the highest corrosion resistance. Prolonging the cooling time after annealing is helpful to improve the corrosion resistance of titanium alloy.

Keywords

• Titanium alloy
• Annealing
• Microstructure
• Mechanical properties
• Corrosion resistance