论文部分内容阅读
对广泛用于电厂主蒸汽管道的耐热钢12Cr1MoV的蠕变曲线进行了研究.将恒应力蠕变与恒载荷蠕变进行对比，证明原始的θ—ConceptProject方法可以成功地描述恒应力蠕变，但它不能用于恒载荷蠕变.根据12Cr1MoV钢的蠕变特性，提出一种修正的θ法，可以成功地描述恒应力和恒载荷蠕变曲线，从而可以利用已有大量的恒载荷蠕变数据，有效地进行的蠕变曲线的外推.
The creep curves of 12Cr1MoV, a heat-resisting steel widely used in the main steam pipelines of power plants, were studied.Comparing constant creep with constant creep shows that the original θ-ConceptProject method can successfully describe creep of constant stress, However, it can not be used for constant load creep. According to the creep characteristics of 12Cr1MoV steel, a modified θ method is proposed to describe the creep curves of constant stress and constant load successfully, so that a large amount of constant load creep Data, extrapolation of creep curves efficiently.