Abstract This second part of the work estimates the reading depth of the magnetic Barkhausen noise, testing surface-treated steels. The concomitant changes of the surface microstructure result in a pronounced two-peak profile of the Barkhausen noise signal: an additional peak arising from the surface-treated layer suppresses the initial peak generated in the bulk material. To confirm and explain the results obtained for semi-hard steel ribbons in the first part of this work (Stupakov et al., 2020), the steels with opposite surface treatments (soft decarburized and hard milled layers of different thickness) have been measured by commonly used detection sensors: classical sample-wrapping and industrial surface-mounted coils. To obtain physically accurate data, dynamic variations of the Barkhausen noise signal have been corrected using the recently proposed dH / dt normalization of its rms envelopes.

中文翻译：

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磁性巴克豪森噪声的读取深度。二、两相表面处理钢。

摘要 该工作的第二部分估计了磁性巴克豪森噪声的读取深度，测试了表面处理过的钢。表面微结构的伴随变化导致巴克豪森噪声信号的明显双峰分布：来自表面处理层的附加峰抑制了在大块材料中产生的初始峰。为了确认和解释在本工作的第一部分（Stupakov 等人，2020 年）中获得的半硬钢带的结果，采用相反的表面处理（不同厚度的软脱碳和硬铣削层）的钢测量了常用的检测传感器：经典的样品包裹和工业表面贴装线圈。为了获得物理上准确的数据，