Liquation and Crystallization Cracks in Aluminum Alloy AA2024 during Selective Laser Melting
| Autor: | I. S. Loginova, Alexey N. Solonin, N.A. Popov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Radiation
Materials science Alloy Metallurgy chemistry.chemical_element engineering.material Condensed Matter Physics Indentation hardness law.invention chemistry law Aluminium visual_art Aluminium alloy visual_art.visual_art_medium engineering General Materials Science Crystallization Selective laser melting Liquation |
| Zdroj: | Defect and Diffusion Forum. 410:203-208 |
| ISSN: | 1662-9507 |
| Popis: | In this work we studied the microstructure and microhardness of standard AA2024 alloy and AA2024 alloy with the addition of 1.5% Y after pulsed laser melting (PLM) and selective laser melting (SLM). The SLM process was carried out with a 300 W power and 0.1 m/s laser scanning speed. A dispersed microstructure without the formation of crystallization cracks and low liquation of alloying elements was obtained in Y-modified AA2024 aluminum alloy. Eutectic Al3Y and Al8Cu4Y phases were detected in Y-modified AA2024 aluminum alloy. It is led to a decrease in the formation of crystallization cracks The uniform distribution of alloying elements in the yttrium-modified alloy had a positive effect on the quality of the laser melting zone (LMZ) and microhardness. |
| Databáze: | OpenAIRE |
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