Research on microstructure and mechanical properties of a new α + Ti₂Cu alloy after semi-solid deformation

The microstructures and tensile mechanical properties of Ti14, a new typical α + Ti₂Cu alloy, after semi-solid forging were researched. The results reveal that its microstructure is coarse and the grain boundary is wide after semi-solid forging, leading to low plasticity at room temperature. Recrystallization heat treatment leads to fine microstructure, which is similar to that of conventional forging, resulting in improvement of tensile mechanical properties. The mechanical properties of semi-solid forging are similar to that of conventional one at high temperature.