CAJ | 학술논문

利用电磁搅拌技术研究了交变磁场作用下400 MPa级超细晶粒低合金高强钢MAG焊缝组织特征，分析了电磁搅拌焊接对焊缝冲击韧性的影响。实验结果表明，电磁搅拌能有效地改变焊缝金属的组织形态，使焊缝金属组织柱状晶转变为等轴晶，有效细化组织，提高了焊缝金属的冲击韧性。
이용전자교반기술연구료교변자장작용하400 MPa급초세정립저합금고강강MAG한봉조직특정，분석료전자교반한접대한봉충격인성적영향。실험결과표명，전자교반능유효지개변한봉금속적조직형태，사한봉금속조직주상정전변위등축정，유효세화조직，제고료한봉금속적충격인성。
The microstructural characteristics of MAG weld meta1 of 400 MPa ultra-fine grained steel under the alternating magnetic field were researched by using electromagnetic stirring technology, and effect of electromagnetical stirring on impact toughness of weld meta1 was investigated. The experimental results show that the electromagnetical stirring can efficiently improve microstructural morphology of weld meta1, convert coarse columnar crystals into fine equiaxed grains, which can enhance the impact toughness of MAG weld meta1.