Microstructure and Mechanical Properties of Resistance Spot Welds for Fe-based Metallic Glass
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2018年第4期
论文作者：王善林 GONG Yubing LI Juan LI Hongxiang MAO Yuqing KE Liming
文章页码：946 - 951
摘 要：The lap joints of Fe-based metallic glass ribbons were carried by resistance spot welding, and the microstructures of spot welds were investigated by X-ray diffraction and transmission electron microscopy. The results indicated that the perfect formations of joints without typical defects such as spatter were achieved with optimized parameters. Except for little nano-particle Fe2B, no other crystalline particle was detected by TEM, revealing that the most microstructure in spot weld remains amorphous. The maximum tensile-shearing force was 45.0 N with the optimized parameters of 1 kA weld current, 30 N electrode force and 0.02 ms weld time. The spot weld failed as pullout failure mode propagating along the interface of nugget zone. The study demonstrates that resistance spot welding is an effective and practical welding process for Fe-based metallic glass.
王善林1，GONG Yubing1，LI Juan1，LI Hongxiang2，MAO Yuqing1，KE Liming1
1. National Defence Key Disciplines Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing
摘 要：The lap joints of Fe-based metallic glass ribbons were carried by resistance spot welding, and the microstructures of spot welds were investigated by X-ray diffraction and transmission electron microscopy. The results indicated that the perfect formations of joints without typical defects such as spatter were achieved with optimized parameters. Except for little nano-particle Fe2B, no other crystalline particle was detected by TEM, revealing that the most microstructure in spot weld remains amorphous. The maximum tensile-shearing force was 45.0 N with the optimized parameters of 1 kA weld current, 30 N electrode force and 0.02 ms weld time. The spot weld failed as pullout failure mode propagating along the interface of nugget zone. The study demonstrates that resistance spot welding is an effective and practical welding process for Fe-based metallic glass.
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