| 王志,何存富,刘秀成*,陈彬,宋亚虎,王博.应力和组分占比对马氏体-铁素体双相钢中磁巴克豪森噪声的影响[J].实验力学,2021,36(1):43~50 |
| 应力和组分占比对马氏体-铁素体双相钢中磁巴克豪森噪声的影响 |
| Effect of applied stress and phase proportion on the magnetic Barkhausen noise in martensite-ferrite steel |
| 投稿时间：2020-01-19 修订日期：2020-03-06 |
| DOI：10.7520/1001-4888-20-016 |
| 中文关键词: 磁巴克豪森噪声 应力 组分占比 双相钢 |
| 英文关键词:magnetic Barkhausen noise stress phase proportion dual-phase steel |
| 基金项目:国家重点研发计划(2018YFF01012300)资助; 国家自然科学基金(11527801,11872081)资助 |
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| 中文摘要: |
| 磁巴克豪森噪声(MBN)技术在马氏体-铁素体双相钢的微观结构及应力无损评价与表征中具有巨大潜力。为探究拉应力和铁素体占比对磁巴克豪森噪声的影响规律及权重，在0~200MPa范围内实验测得了具有不同铁素体占比的双相钢MBN信号。重点分析了MBN蝶形曲线双峰峰值(分别代表马氏体和铁素体)在应力和铁素体占比两因素耦合条件下的变化趋势。结果表明：受多种竞争机制影响，铁素体对应的MBN信号峰值随应力和铁素体占比增加未呈现明显变化规律；铁素体占比增加过程中，马氏体对应的MBN信号峰值呈先快速后缓慢的两阶段增长趋势，且第二阶段的增长速率在高应力区间更快。应力和铁素体占比增加均会导致马氏体MBN信号峰值升高，当铁素体占比小于12%时，组分占比的影响权重更高；当铁素体占比大于12%时，两因素的影响权重相当。 |
| 英文摘要: |
| Magnetic Barkhausen noise (MBN) technique has great potential in non-destructive evaluation of microstructure and stress in martensite-ferrite steel. To investigate the influence and weight of applied tensile stress and ferrite proportion on MBN, experiments are performed in dual-phase steel with different ferrite proportion under tension in the range of 0~200MPa. The change trends of double peaks (representing martensite and ferrite respectively) of MBN butterfly curve under the coupling condition of stress and ferrite proportion are specially analyzed. The results show that the MBN peak corresponding to ferrite hardly changes obviously with the increase of stress and ferrite proportion due to the complex competition mechanism. The MBN peak corresponding to martensite increases rapidly at first and then increases slowly as the ferrite proportion increases. In addition, the growth rate of the second stage is faster in the high stress range. Stress and ferrite proportion will lead to the increase of MBN peak value. In general, the phase proportion is the dominant influence factor when the ferrite proportion is less than 12%, and the influence weight of stress and ferrite proportion is in the same order when the ferrite proportion exceeds 12%. |
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