304不锈钢构件的高温蠕变特性分析

High-temperature Creep Numerical Simulation of 304 Stainless Steel Component

根据304不锈钢的单轴蠕变试验数据,运用ANSYS有限元方法,建立了304不锈钢在高温下的时间硬化隐式蠕变模型,对该模型进行了数值模拟,模拟结果与实验数据吻合度较好。在此基础上,研究了304不锈钢钢管在高温条件下的蠕变极限,并通过分析得到了温度与蠕变极限之间的关系,为正确预测在多轴应力状态下高温部件蠕变特性提供了理论依据,对评估高温构件的安全性和经济性具有十分重要的应用价值。

According to the 304 stainless steel single shaft creep test data,using the ANSYS finite element method,a model for the time hardening implicit creep of 304 stainless steel at high-temperature was established.Through the numerical simulation,good fitting belween simulation results and experimental data was obtained.On this basis,the creep limit of 304 stainless steel pipe was studied under the condition of high-temperature,and through the analysis the relationship between temperature and creep limit was obtained.The results provide a theoretical basis for correctly predicting the creep properties of high temperature components at axial stress state,and have application value in evaluate the safety and economy of high temperature components.