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本文用粉纹法研究了硅钢中几种典型磁畴结构在外加应力作用下变化的细节及其规律。揭示了张应力使畴细化的机制:反向磁化核在张应力作用下长大、伸长并转变成新的180°条状畴,并从畴结构变化的角度解释了φ≈2°时损耗降低出现极值这一实验事实的物理本质。 实验表明,施加纵向压应力时畴结构发生大范围的重新排列,并转化为横条状和人字形压应力畴纹。本文依据畴壁取向原则及实验事实提出了人字形应力畴模型
In this paper, the details and regularities of several typical magnetic domain structures in silicon steel under the applied stress were studied by using the graining method. The mechanism of grain refinement by tensile stress was revealed: the nuclei of reverse magnetization grew up under tensile stress, elongated and transformed into new 180 ° striped domains, and explained that when φ ≈ 2 ° from the change of domain structure Losses reduce the extreme nature of the experimental facts of the nature of the experiment. Experiments show that when the longitudinal compressive stress is applied, the domain structures are rearranged in a wide range and transformed into transverse stripes and chevron-shaped compressive stress domain patterns. In this paper, based on the principle of domain wall orientation and experimental facts, a herringbone stress domain model is proposed