Study on microstructure and properties of Mg/steel laser welding-brazing joint assisted by alternating magnetic field with Ni interlayer
| Autor: | Zhaoze Liu, Yi Rong, Zhenyu Xiong, Haitao Li, Donghai Cheng, Yiping Chen, Wenjie Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Technology Materials science Intermetallic 02 engineering and technology Welding Industrial and Manufacturing Engineering Tensile and shear strength law.invention Fusion welding 020901 industrial engineering & automation 0203 mechanical engineering law Ultimate tensile strength Mechanical occlusion Shear strength Brazing General Materials Science Composite material Laser welding-brazing technology Alternating magnetic field Laser beam welding Microstructure 020303 mechanical engineering & transports Mechanics of Materials |
| Zdroj: | International Journal of Lightweight Materials and Manufacture, Vol 4, Iss 4, Pp 416-422 (2021) |
| ISSN: | 2588-8404 |
| Popis: | The laser welding-brazing technology assisted by alternating magnetic field was adapted to Mg/steel dissimilar materials with Ni interlayer. Microstructure and mechanical properties of joints were compared with and without alternating magnetic field. The results showed that the weld width L was enlarged and ensured good weld formation and weld quality by applying the alternating magnetic field. The joint was comprised of Mg side weld zone, intermetallic compound (IMC) layer and steel side weld zone. The effect of mechanical occlusion was enhanced by the appearce of zonal structures of Fe–Ni solid solution in the Mg side weld zone and the serrated Mg2Ni in the brazing zone of IMC layer. A continuous nano scale AlNi layer formed in the fusion welding zone of IMC layer, which is conducive to strengthen the joint. The optimal joint assisted by appropriate alternating magnetic field was obtained with tensile and shear strength enhanced by nearly 15%. |
| Databáze: | OpenAIRE |
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