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首页> 外文期刊>Materials Science and Engineering >Nondestructive characterization of microstructure and mechanical properties of intercritically annealed dual-phase steel by magnetic Barkhausen noise technique
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Nondestructive characterization of microstructure and mechanical properties of intercritically annealed dual-phase steel by magnetic Barkhausen noise technique

机译：Barkhausen电磁噪声技术对临界退火双相钢的组织和力学性能进行非破坏性表征

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Detection of microstructural changes is a great importance matter in production line of steel parts. To implement such a task, many destructive tests are involved in industries. Current work examines the effects of different microstructures and mechanical properties on the magnetic Barkhausen noise technique as a suitable alternative testing method. In this study, different dual-phase steels with different martensite percentages were manufactured using various intercritical annealing temperatures from 750 to 850 ℃. The results concerning magnetic Barkhausen noise were discussed in terms of position, height and shape of Barkhausen noise profiles, taking into account the effect of different percentages of martensite. Since this method is nondestructive after calibration, some beneficial relations for nondestructive characterization of microstructure as well as mechanical properties of any unknown dual-phase steel sample were achieved. Additionally, the feasibility of using the magnetic Barkhausen noise to detect microstructural changes during tempering of dual-phase steels was evaluated. The results revealed this magnetic method had a high potential to be used as a reliable nondestructive tool to detect microstructural changes occurring during manufacturing of dual-phase steels.
机译：显微组织变化的检测是钢零件生产线中的重要课题。为了执行此任务，行业中涉及许多破坏性测试。当前的工作研究了不同的微观结构和机械性能对巴克豪森磁性噪声技术的影响，作为一种合适的替代测试方法。在这项研究中，使用不同的临界退火温度（从750到850℃）制造了具有不同马氏体百分比的不同双相钢。考虑到不同百分比的马氏体的影响，从Barkhausen噪声分布的位置，高度和形状方面讨论了有关Barkhausen电磁噪声的结果。由于该方法在校准后是非破坏性的，因此获得了一些对组织的非破坏性表征以及任何未知双相钢样品的力学性能的有益关系。此外，评估了使用巴克豪森磁性噪声检测双相钢回火过程中微观组织变化的可行性。结果表明，这种磁性方法具有很高的潜力，可以用作检测双相钢制造过程中发生的微观结构变化的可靠无损工具。

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