在对铁磁平板试样进行不同载荷的静拉伸试验基础上,利用粉纹法观察该试样的磁畴形貌变化,对比分析相同部位在不同应力作用下磁畴组织的变化特征。试验结果表明:随着拉应力的增大,被观察部位的磁畴结构由180°片状畴逐渐转变为迷宫畴;且两组对比试验结果反映出的变化趋势相同。试验可为进一步进行磁记忆检测微观机理的研究提供直观的依据。 On the basis of the static tensile test of ferromagnetic flat specimens under different loads, the morphological changes of the magnetic domains were observed by the grit pattern. The changes of the magnetic domain structure under the different stresses of the same part were analyzed. The experimental results show that with the increase of tensile stress, the domain structure of the observed region gradually changes from 180 ° lamellar domain to a labyrinth domain; and the comparison results of the two groups reflect the same trend. The test can provide an intuitive basis for the further study on the microscopic mechanism of magnetic memory testing.