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研究了0~0.84 T的直流磁场对AZ31镁合金凝固组织和力学性能的影响。结果表明:随着磁场强度的增加,合金的初生相和第二相均先细化后粗化,转折点为0.28 T;在直流磁场作用下,α-Mg基体在(0002)面的衍射峰强度减弱,在(1120)、(1122)和(1010)面的衍射峰强度显著增强;在直流磁场的作用下,合金的抗拉强度下降,但伸长率明显提高;当磁场强度为0.28T时,伸长率最高为11.32%,与未处理时相比,提高了141.9%,同时抗拉强度下降最小。
The effects of DC magnetic field of 0 ~ 0.84 T on the microstructure and mechanical properties of AZ31 magnesium alloy were studied. The results show that the primary phase and the secondary phase of the alloy are both refined and roughened with the increase of the magnetic field strength, the turning point is 0.28 T; under the action of direct current magnetic field, the diffraction peak intensity of the α-Mg matrix in the (0002) plane (1120), (1122) and (1010), respectively. The tensile strength of the alloy decreases with the increase of DC magnetic field, but the elongation increases obviously. When the magnetic field strength is 0.28T , The highest elongation of 11.32%, compared with untreated, increased by 141.9%, while the smallest decrease in tensile strength.