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首页> 外文期刊>Physica, C. Superconductivity and its applications >Detecting fatigue damage in 2.25Cr-1Mo steel with scanning SQUID gradiometry
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Detecting fatigue damage in 2.25Cr-1Mo steel with scanning SQUID gradiometry

机译：用扫描SQUID梯度仪检测2.25Cr-1Mo钢的疲劳损伤

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摘要

in order to develop a new method for detecting fatigue damage nondestructively in 2.25Cr-1Mo steel, which is used in high temperature steam piping of fossil power plants and petroleum chemical facilities, fractured and interrupted samples in low-cycle fatigue (LCF) tests were investigated using scanning superconducting quantum interference device (SQUID) gradiometer. High temperature LCF experiments on 2.25Cr-1Mo steel were conducted to obtain various fatigue damage ratio, D-f. Simultaneously. we also examined the fatigued samples by optical microscopy, electron back scatter diffraction pattern, magnetic force microscopy and hardness measurements to analyze the damage level. Except for a couple of samples, SQUID integrated intensity decreased with increasing Df, suggesting the potential of SQUID to evaluate fatigue damage in 2.25Cr-1Mo steel.
机译：为了开发一种新的无损检测2.25Cr-1Mo钢的疲劳损伤的方法，该方法用于化石电厂和石油化学设施的高温蒸汽管道，对低周疲劳（LCF）测试中的断裂和间断样品进行了测试。使用扫描超导量子干涉仪（SQUID）梯度仪进行了研究。在2.25Cr-1Mo钢上进行了高温LCF实验，获得了各种疲劳损伤率D-f。同时。我们还通过光学显微镜，电子背散射衍射图，磁力显微镜和硬度测量检查了疲劳样品，以分析损伤程度。除了几个样品外，SQUID的综合强度随Df的增加而降低，这表明SQUID有潜力评估2.25Cr-1Mo钢的疲劳损伤。

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