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首页> 外文会议>ASME(American Society of Mechanical Engineers)/JSME Pressure Vessels and Piping Conference: Fitness for Service, Life Extension, Remediation, Repair, and Erosion, Corrosion Issues for Pressure Vessels and Components; 20040725-20040729; San Diego,CA; US >AN ESTIMATOR FOR THE INFLUENCE OF SERVICE TEMPERATURE ON CREEP RUPTURE LIFE
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AN ESTIMATOR FOR THE INFLUENCE OF SERVICE TEMPERATURE ON CREEP RUPTURE LIFE

机译：服务温度对蠕变断裂寿命影响的估计

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摘要

The 2001 ASME B31.1 Code (Code) has a warning to the piping designer regarding materials susceptible to creep damage. However, the Code does not prescribe a methodology to determine the accelerated life reduction for a component due to events resulting in operating temperatures in excess of the design temperature. In general, the quantitative evaluation of the service life of a component subject to creep damage is very complex. Nevertheless, the amount of accelerated creep damage due to increased temperature can be approximately estimated. This paper is the technical basis for a recent modification to the Code. It provides an approximate relationship of operating temperature and time for equivalent creep damage of typical power piping materials. Piping designers, plant operators, and plant engineers may use this information as a rough idea of the relationship of temperature and time to maintain an equivalent safety margin on creep rupture life. This evaluation includes a discussion of tolerance to temperature increase for some low chrome ferritic, intermediate chrome martensitic, and austenitic stainless steel alloys.
机译：2001 ASME B31.1规范（规范）向管道设计者发出警告，告知其易受蠕变损坏的材料。但是，该规范并未规定一种方法来确定由于导致工作温度超过设计温度的事件而导致的组件加速寿命降低。通常，对遭受蠕变损坏的组件的使用寿命进行定量评估非常复杂。然而，由于温度升高而引起的蠕变加速损伤的数量可以近似估算。本文是最近对《守则》进行修改的技术基础。它为典型的动力管道材料的等效蠕变损伤提供了工作温度和时间的近似关系。管道设计人员，工厂操作人员和工厂工程师可能会将这些信息用作温度和时间关系的粗略概念，以在蠕变断裂寿命上保持等效的安全裕度。该评估包括对某些低铬铁素体，中等铬马氏体和奥氏体不锈钢合金对温度升高的耐受性的讨论。

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