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首页> 外文期刊>Materials at High Temperatures >Correlation and capability of using site inspection data and small specimen creep testing for a service-exposed CrMoV pipe section
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Correlation and capability of using site inspection data and small specimen creep testing for a service-exposed CrMoV pipe section

机译：使用现场检查数据的相关性和能力曝光CRMOV管段的现场检查数据和小型标本蠕变测试

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This paper presents for the first time an investigation on the creep damage evolution of an ex-service CrMoV pipe section through impression creep test (ICT) and metallurgical inspection data. The study emphasises the importance of correlating the operating conditions (temperature and stress) of power plant components with the results from metallurgical examinations and small specimen creep tests. The paper seeks for a correlation among micro- and macro-hardness measurements, surface replicas data and minimum creep strain rates (obtained by ICTs) of the parent material of the pipe section. Also, optical and scanning electron microscope (SEM) micrographs have been used to assess possible metallurgical differences through the thickness of the pipe section. This investigation shows how miniature creep test specimen data could be practically used in a holistic approach for the evaluation of life consumption of power plant components and concludes that the studied parent material could have been retired from service too early.
机译：本文首次介绍了通过印模蠕变试验（ICT）和冶金检验数据进行前所未防的CRMOV管道切片蠕变损伤演化的调查。该研究强调了将发电厂组分的操作条件（温度和应力）与冶金检查和小标本蠕变试验相关的结果相关的重要性。本文寻求在管道部分的母材的微观和宏观测量，表面复制数据和最小蠕变应变率（通过ICT获得的最小蠕变应变速率（通过ICT获得）的相关性。而且，光纤和扫描电子显微镜（SEM）显微照片已被用于通过管段的厚度评估可能的冶金差异。本研究表明，微型蠕动试样数据如何实际上用于评估电厂组件的生命消耗的整体方法，并得出学习的母材可以过早退出服务。

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