The Effect of Y Element on the Microstructure and Mechanical Properties of Ti-Fe-Mo Alloy after Forging Heat Treatment
Two types of samples were designed based on whether Y element was added.Titanium alloy sintered billets were prepared by air cooling and furnace cooling processes.The metallographic microstructure was examined by room temperature tensile testing to analyze the influence mechanism of Y element on the microstructure and mechanical properties of Ti-Fe-Mo alloy.The results show that the annealing temperature for the optimal matching state of alloy strength and plasticity is 650 ℃.If it is higher than the β transformation point temperature,the a phase transforms into the β phase.Due to the influence of rare earth oxide particles,the retained β grains cannot grow,with a size of about 80～100 µm.The room temperature tensile strength and elongation of Ti-Fe-Mo alloy were improved by adding YH2,and the tensile strength was 50～70 MPa higher than that of the sample without YH2 alloy.
NETL
NSTL
万方数据
