| Autor: |
Omran, Salman Hussien, AL-Kabi, Sadiq H., Abdulhadi, Hassan. A., Ali, Moaz H. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3051 Issue 1, p1-9, 9p |
| Abstrakt: |
An investigation was conducted on the micro-hardness and microstructural features of 316L-2205 austenitic-duplex stainless steel at different welding speed levels using the pulsed fiber laser system. The welding speed was used to assess the microstructure and hardness of the welded plates. The joints produced at 1.9 mm/s welding speed had better metallurgical features than the other joints. The joints were without any defect (porosity or cracks), showing that the fiber laser welding system is an appropriate method for stainless steel. The superior properties of these joints are due to the development of fine grains and well-distributed uniform precipitates at the fusion zones. The joints fabricated at high welding speed were found to show higher hardness and smaller weld bead size compared to those welded at low speeds. The length of the dendrites and the spacing between the dendrites decreased within the weld zone with increases in the welding speed; this is responsible for the observed changes in the joints' hardness level. Large randomized controlled trials may provide additional definitive evidence of the welding speed effect, as well as the influence of other process parameters on the features of the resulting dissimilar joints. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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