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在探讨了无取向电工钢工业检测{100}面织构的需求和当前所面临的测量不准或测量方法过于繁杂的基础上,尝试了一种{100}面织构简便的定量测算方法。以市场上3种无取向电工钢板为实验材料,测量了{200}不完整极图。把极图中心附近10°范围内极密度分布的累积定义为{100}面织构,推导出了计算钢板{100}面织构的简便方法。其中根据{200}极图的对称性和极图的已知数据近似推导出了极图的未知部分,从而完成了定量计算过程。定量计算结果与实测极图所表现{100}面织构的强弱趋势一致。利用相似的原理也有可能发展出对其它织构简便而准确的定量测算方法。 相似文献
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最终退火温度的设计是无取向电工钢实现最终磁性十分重要的工艺参数,本文着重研究了0.25%Si无取向电工钢退火过程中晶粒组织的变化对磁性的影响。研究表明其磁感最高点出现在纤维组织完全消失,{111}(112)、{554}(225)织构组分较弱的组织状态。铁损的降低主要依赖于磁滞损耗的降低,织构的影响不大。 相似文献
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0.1%Si无取向电工钢晶粒长大对织构和磁性的影响 总被引:3,自引:0,他引:3
本文研究了0.1%Si无取向电工钢退火过程中晶粒长大对织构和磁感、铁损和交流磁导率的影响,结果表明晶粒尺寸越大,(1)有利面织构(0k1)强度降低;(2)较低磁场下磁感升高,高磁场下磁感降低;(3)铁损降低实际上是磁滞损耗降低;(4)交流导磁率增加。 相似文献
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研究了含碳量约(20~30)×10-6的50W 800冷轧无取向硅钢板的织构与磁时效行为的关系。200℃×24 h的磁时效试验结果表明,α-Fe{100}面的平均弹性模量最低,且与渗碳体的弹性模量接近,因此渗碳体易沿{100}面片状析出,造成磁时效,使硅钢板的铁损升高。磁化时180°磁畴畴壁的驱动力与硅钢板织构有密切关系,其100平行于外磁场方向的织构有利于减小磁时效导致的铁损增幅,降低钢板的磁时效效应。 相似文献
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Rudskoy A. I. Kononov A. A. Kondrat’ev S. Yu. Matveev M. A. 《Metal Science and Heat Treatment》2019,60(11-12):689-694
Metal Science and Heat Treatment - Processes of structure and texture formation in hot rolling of electrical anisotropic steel are studied. It is shown that the structure of the surface layers of... 相似文献
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研究了热轧板常化后的晶粒尺寸对成品组织、织构和磁性能的影响。结果表明,随着热轧板晶粒尺寸的增加,成品晶粒尺寸增加;成品织构中γ纤维织构,特别是{111}<110>织构组分明显降低,磁感应强度B50显著提高。 相似文献
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《金属学报(英文版)》2017,(9)
In this study, high-and low-grade grain-oriented electrical steels were used as the initial materials to produce0.08-mm-thick sheet with one-step cold-rolling method. Electron backscattering diffraction analysis technique and X-ray diffraction texture analysis technique were adopted to investigate the effect of initial Goss texture sharpness on texture evolution and magnetic properties of ultra-thin grain-oriented electrical steel. The results showed that primary recrystallization and secondary recrystallization were the main processes that occurred during annealing. The induced factors for secondary recrystallization of two grades samples were not consistent. The high-grade samples presented texture induction mechanism, while the low-grade samples revealed strong surface-energy induction mechanism. The initial Goss texture sharpness had a great impact on texture evolution and magnetic properties of ultra-thin grain-oriented electrical steel. The Goss texture component formed after primary recrystallization was stronger, and better magnetic properties were obtained at low frequencies. For low-grade samples, secondary recrystallization enhanced the intensity of Goss texture, and both grain size and texture contributed to better high-frequency magnetic properties after secondary recrystallization. By controlling the annealing process, the magnetic properties of low-grade products could be significantly improved, thus achieving conversion from low-grade to high-grade products. 相似文献