Non-destructive testing on creep degraded 12% Cr-Mo-W-V ferritic test samples using Barkhausen noise
Non-destructive testing on creep degraded 12% Cr-Mo-W-V ferritic test samples using Barkhausen noise
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DOI：
10.1016/j.jmmm.2019.166102
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发表时间：
2020-03
影响因子：
2.7
通讯作者：
B. Gupta;B. Ducharne;T. Uchimoto;G. Sebald;T. Miyazaki;T. Takagi
中科院分区：
文献类型：
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作者：
B. Gupta;B. Ducharne;T. Uchimoto;G. Sebald;T. Miyazaki;T. Takagi
微磁无损检测有助于通过局部磁性表征来评估铁磁部件（主要是钢）的机械和结构完整性。巴克豪森噪声测量方法作为揭示磁畴壁运动的一种手段，是一种很有潜力和研究兴趣的微磁无损检测方法。磁巴克豪森噪声能量（MBNenergy）方法可用于从巴克豪森噪声测量重建局部磁滞循环。这些周期构成了很好的指标，了解磁化过程和微观组织和机械性能的影响。本文用MBN能量法研究了高铬钢在不同应力和温度条件下的蠕变/时效引起的组织变化。相应的磁性参数进行了调查，沉淀和位错。在实验分析的基础上，基于Jiles-Atherton理论对准静态磁行为进行了模拟。这种模拟方法产生物理上有意义的模型参数，可以分析和链接到样品的微观结构特征，从而使物理解释。
Micro-magnetic non-destructive testing helps in evaluating the mechanical and structural integrity of ferromagnetic components (mostly steel) via local magnetic characterization. As a means of revealing the magnetic domain wall movements, the Barkhausen noise measurement method is a micro-magnetic non-destructive testing method of considerable potential and interest. The Magnetic Barkhausen Noise Energy (MBNenergy) method can be used to reconstruct local hysteresis cycles from Barkhausen noise measurements. These cycles constitute good indicators for understanding the magnetization process and the influence of microstructural and mechanical properties. In this article, the MBNenergymethod is employed for evaluating the microstructural changes induced by creep/ageing of high chromium steel subjected to different creep test conditions as stress and temperature. The corresponding magnetic parameters are investigated in relation to precipitations and dislocations. After the experimental analysis, simulations are performed based on the Jiles-Atherton theory for the quasi-static magnetic behavior. This simulation approach yields physically meaningful model parameters that can be analyzed and linked to the sample microstructural characteristics, thereby enabling physical interpretation.