对钛合金高压容器的失效机制的分析

Analysis of the Failure Mechanism of Titanium Alloy High Pressure Vessels

为确保钛合金压力容器失效机制分析的精准性,本次研究提出采用热力耦合模拟的方式进行失效机制检测,利用微观分析法和有限元软件模型分析法来对TC18钛合金压力容器进行承压检验。整个实验过程利用JR-3DSS光学扫描仪来确定钛合金高压容器表面情况,并利用相关公式计算容器性能。研究表明,造成钛合金高压容器断裂的主要原因为腐蚀和高压气体冲击容器的薄弱位置形成沟槽,在冲击荷载和腐蚀的相互作用凸显为断裂特征。

In order to ensure the accuracy of failure mechanism analysis for titanium alloy pressure vessels,this study proposes to use thermal coupling simulation for failure mechanism detection,and use micro analysis method and finite element software model analysis method to conduct pressure testing on TC18 titanium alloy pressure vessels.The entire experimental process was carried out using a JR-3DSS optical scanner to determine the surface condition of titanium alloy high-pressure containers,and the container performance was calculated using relevant public displays.Research has shown that the main reasons for the fracture of titanium alloy high-pressure vessels are corrosion and the formation of grooves in the weak positions of the vessels due to high-pressure gas impact.The interaction between impact load and corrosion highlights the fracture characteristics.