Laser Welding of Dissimilar Metal Joint of 6061 Al Alloy and Al Matrix Composite
| Autor: | Wei Jiang, Hla Min Htun, Banglong Yu, Jun Dai, Zheng Liu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Article Subject Alloy General Engineering Laser beam welding 02 engineering and technology Welding engineering.material 021001 nanoscience & nanotechnology Microstructure 01 natural sciences law.invention Corrosion Lap joint law 0103 physical sciences lcsh:TA401-492 engineering lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science Grain boundary Laser power scaling Composite material 0210 nano-technology |
| Zdroj: | Advances in Materials Science and Engineering, Vol 2019 (2019) |
| ISSN: | 1687-8442 1687-8434 |
| DOI: | 10.1155/2019/2359841 |
| Popis: | In this paper, dissimilar metal joints of 6061 aluminum alloy and aluminum matrix composite material are investigated by laser welding. TiB2 particles were added into the lap joint. The welding process, microstructure, and the corrosion properties of welding joints are examined. The results demonstrate that the selected optimization process parameters are laser power 6 kW, welding speed 0.6 mm/s, pulse width 11.5 ms, and laser frequency 4.5 Hz. There are a few obvious pores in the molten pool. Al2Ti, Fe2Si, and Al0.5Fe3Si0.5 are present in the microstructure. During the welding process, some TiB2 particles are decomposed and reacted with molten Al. Other TiB2 particles are nucleated and solidified, and the excess TiB2 particles are pushed to the grain boundaries by molten Al. TiB2 particles are wetted well by molten matrix metal. The corrosion resistance of alloys in different conditions decreased in the following order: the weld beam >6061 Al > AMC. |
| Databáze: | OpenAIRE |
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