论文部分内容阅读
对采用两种不同热处理工艺的钛合金TC4材料进行了Hopkinson拉伸实验、圆筒爆炸实验和数值仿真,从而确定了两种不同热处理工艺的优劣并通过微观分析揭示了钛合金TC4材料微观组织结构对内爆炸载荷下圆筒膨胀半径的影响。实验和数值分析表明:采用双重退火热处理工艺的钛合金TC4材料具有良好的动态力学性能。在相同的加载条件下,经此工艺处理的TC4圆筒在爆轰产物未泄漏之前有着充分的膨胀半径,而且也不容易形成绝热剪切破坏。同时,给出的依据高速摄影照片确定筒壳断裂点的方法是切实可行的,获得的断裂时间与数值分析结果吻合。
Hopkinson tensile test, cylinder explosion experiment and numerical simulation of titanium alloy TC4 with two different heat treatment processes were carried out to determine the advantages and disadvantages of two different heat treatment processes and to reveal the microstructure of titanium alloy TC4 by microanalysis Influence of Structure on Cylinder Expansion Radius under Explosive Loading. Experiments and numerical analyzes show that TC4 titanium alloy with double annealing heat treatment has good dynamic mechanical properties. Under the same loading conditions, the TC4 cylinder treated by this process has a sufficient expansion radius before the detonation product is leaked, and adiabatic shear failure is not easily formed. At the same time, the method of determining the fracture point of cylinder shell based on high-speed photography photos is feasible, and the fracture time obtained is in good agreement with the numerical analysis.