Effect of Traverse Speed on the Defect Characteristic, Microstructure, and Mechanical Property of Friction Stir Welded T-Joints of Dissimilar Mg/Al Alloy
| Autor: | Jin Jiayi, Lu Jiazhu, Qin Tianxiang, Sun Tao, Yifu Shen, Wu Siyu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Article Subject Scanning electron microscope Alloy General Engineering 02 engineering and technology Welding engineering.material 021001 nanoscience & nanotechnology Microstructure 01 natural sciences law.invention Optical microscope law 0103 physical sciences Ultimate tensile strength engineering TA401-492 Friction stir welding General Materials Science Lamellar structure Composite material 0210 nano-technology Materials of engineering and construction. Mechanics of materials |
| Zdroj: | Advances in Materials Science and Engineering, Vol 2020 (2020) |
| ISSN: | 1687-8434 |
| DOI: | 10.1155/2020/4515079 |
| Popis: | The AZ31 B/2024-T4 T-lap-joint was successfully fabricated by friction stir welding (FSW) with different welding parameters. The defect characteristics and metallurgical structure were observed and analyzed using optical microscope (OM) and scanning electron microscopy (SEM). Besides, the effects of defects and welding parameters on mechanical properties were investigated. The results show that an effective metallurgical reaction zone can be formed between Mg and Al (Mg-Al MRZ) and the island structures and lamellar structures appeared in the Mg-Al MRZ. The T-joints without tunnel defects can be obtained and the excellent mechanical properties of the T-joint were achieved using the welding speed of 50 mm/min. The tensile strength along the skin and the stringer was mainly affected by the kiss bonding defects. |
| Databáze: | OpenAIRE |
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