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研究不同热处理制度对TB2钛合金的组织结构和动态力学性能的影响,利用分离式霍普金森压杆(SHPB)装置,对圆柱形、帽型两种样品进行室温动态压缩实验,进一步研究不同的组织结构对TB2钛合金动态力学性能的影响。结果表明:相变点以上的固溶处理使TB2合金平均晶粒尺寸增大;而相变点以下的固溶时效处理使晶粒内部析出大量的α相,材料强度明显上升。室温动态压缩试验中,在不同应变率加载条件下,固溶时效的样品比固溶的样品屈服强度高,冲击吸收功高;而对于不同冲击速度条件下,固溶时效的样品不易于发生绝热剪切,承载能力强。
The effects of different heat treatment regimes on the microstructure and dynamic mechanical properties of TB2 titanium alloy were investigated. The dynamic compression experiments of cylindrical and cap type samples at room temperature were carried out by using split Hopkinson pressure bar (SHPB) Effect of Structure on Dynamic Mechanical Properties of TB2 Titanium Alloy. The results show that the average grain size of TB2 alloy increases with the solution treatment above the transformation point, while the solution aging treatment below the transformation point causes a large amount of α phase to precipitate in the grains, and the strength of the material increases obviously. In the dynamic compression test at room temperature, under different strain rate loadings, the solution-aging specimens have higher yield strength and higher impact absorption capacity than the solution-hardened specimens. However, for different impact velocities, the solution-aging specimens are not prone to thermal insulation Shear, bearing capacity.