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首页> 外文会议>International Conference on Microalloying for New Steel Processes and Applications; 20050907-09; Basque Country(ES) >Characterization of the Residual Stresses in Plastically Deformed Ferrite-Martensite Steels using Barkhausen Noise Measurements
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Characterization of the Residual Stresses in Plastically Deformed Ferrite-Martensite Steels using Barkhausen Noise Measurements

机译：使用巴克豪森噪声测量表征塑性变形铁素体-马氏体钢中的残余应力

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摘要

In this work, we show that the measurement of the Barkhausen noise allows the residual stresses in each of the two phases of ferrite-martensite steels to be characterized. We have first studied the effect of a tensile and a compressive stress on the Barkhausen noise signature. We observed that for a ferrite-martensite steel, the application of a tensile stress increases the Barkhausen activity of the martensite and ferrite phases, whereas a compressive one reduces it. In a second time, we induced residual stresses by applying a plastic deformation to ferrite-martensite steels. After a tensile plastic deformation, we observed that (ⅰ) compressive residual stresses appear in ferrite, and (ⅱ) tensile residual stresses appear in martensite. An opposite behavior is observed after a compressive plastic deformation. These results show that the Barkhausen noise measurement makes it possible to highlight in a nondestructive way the distribution of the stresses in each of the two phases of a ferrite-martensite steel. This result could be used to characterize industrial Dual-Phases steels that are plastically deformed during mechanical processes.
机译：在这项工作中，我们证明了Barkhausen噪声的测量可以表征铁素体-马氏体钢两相中每相的残余应力。我们首先研究了拉应力和压应力对巴克豪森噪声特征的影响。我们观察到，对于铁素体-马氏体钢，施加张应力会增加马氏体和铁素体相的Barkhausen活性，而压缩性会降低它。第二次，我们通过对铁素体-马氏体钢施加塑性变形来引起残余应力。拉伸塑性变形后，我们观察到（ⅰ）压缩残余应力出现在铁素体中，（ⅱ）拉伸残余应力出现在马氏体中。在压缩塑性变形后观察到相反的行为。这些结果表明，巴克豪森噪声测量可以以非破坏性的方式突出显示铁素体-马氏体钢两相中每相的应力分布。该结果可用于表征在机械过程中发生塑性变形的工业双相钢。

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