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所属单位：材料科学与技术学院
发表刊物：APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
关键字：SOLIDIFICATION KEYHOLE SURFACE FLOW MELT
摘要：Additional external steady magnetic fields were applied to investigate the influence of a steady magnetic field aligned perpendicular to the welding direction during laser beam welding of 2024 aluminum alloy. The flow pattern in the molten pool and the weld seam geometry were significantly changed by the induced Lorentz force distribution in the liquid metal. It revealed that the application of a steady magnetic field to laser beam welding was helpful to the suppression of the characteristic wineglass-shape and the depth-to-width ratio because of the Marangoni convection. The microstructures and component distributions at various laser power and magnetic field intensity were analyzed too. It was indicated that the suppression of the Marangoni convection by Lorentz force was beneficial to accumulation of component and grain coarsening near the fusion line.
ISSN号：0947-8396
是否译文：否
发表时间：2017-01-01
合写作者：Zhou, Junjie,Sun, Weihua,Chen, Jicheng,魏艳红
通讯作者：占小红