Abstract The authors present the results of experimental investigations on the damage evaluation of AISI 304 steel under tension and cyclic loading based on coercive force measurements. It was established that kinetics of the coercive force demonstrates descending and ascending sections on the kinetic curve independently on the loading type. The increase of coercive force is caused by the deformation-induced transformation of the paramagnetic austenite into ferromagnetic martensite. The increasing coercive force is observed during the deformation process up to the loss of metal continuity (initiation and propagation of cracks and voids). While the coercive force shows a decreasing tendency due to the loss of metal continuity (stage of crack propagation). In the coercive force monitoring, it is required to pay attention to the variation in the direction of the kinetic curve and not to the absolute values of coercive force. Thus, the coercive force monitoring in the most critical zones of the structural elements allows one to control for the damage accumulation at each stage of crack initiation or propagation.

中文翻译：

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基于矫顽力测量的循环载荷下AISI 304钢的损伤评估

摘要 作者介绍了基于矫顽力测量的 AISI 304 钢在拉伸和循环载荷下损伤评估的实验研究结果。已确定矫顽力的动力学在动力学曲线上独立于加载类型显示下降和上升部分。矫顽力的增加是由顺磁性奥氏体向铁磁性马氏体的变形诱导转变引起的。在变形过程中观察到矫顽力增加直至金属连续性丧失（裂纹和空隙的产生和传播）。由于金属连续性的丧失（裂纹扩展阶段），矫顽力呈下降趋势。在强制力监控中，需要注意的是动力学曲线方向的变化，而不是矫顽力的绝对值。因此，结构元件最关键区域的矫顽力监测允许人们控制裂纹萌生或扩展的每个阶段的损伤累积。