利用Instron电子拉伸机和分离式霍普金生压杠(SHPB)实验装置,研究了准静态和动态压缩条件下热轧TB2钛合金织构多晶板的力学性能.对TB2钛合金板材的轧向、横向以及轧制平面内与轧向成45等3个方向进行了压缩实验,得到了不同应变速率下的应力-应变曲线.结果表明:热轧TB2钛合金板材不同方向上的流变应力均随应变速率的增加而增加,表现出明显的应变速率强化效应.准静态和动态力学性能均表现出各向异性,且准静态和动态压缩行为规律不一致.考虑准静态和动态变形时可能的塑性变形机制,基于微观晶体塑性变形理论,定性讨论了热轧织构多晶TB2钛合金板屈服强度的各向异性.
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