| Autor: |
UMUNAKWE, Reginald, EZE, Jeremiah C., UMUNAKWE, I. J., BORISADE, Sunday G., ADIGUN, Oluwole D., EZE, Wilson Uzochukwu, OLANREWAJU, E. O., OYETUNJI, Akinlabi, MADUEKE, Chioma Ifeyinwa, MBAH, Oguejiofor Miracle |
| Předmět: |
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| Zdroj: |
Annals of the Faculty of Engineering Hunedoara - International Journal of Engineering; Nov2022, Issue 4, p187-192, 6p |
| Abstrakt: |
The effect of natural and artificial age hardening and varied quenching temperatures on the mechanical properties and microstructure of secondary Al-Zn-Cu alloy were studied. Stir casting was used to produce rods from aluminium scraps; some of the rods were homogenized in a heat treatment furnace at 550°C for 5 hours before cooling under the atmospheric air at room temperature. Some of the machined specimens from the homogenized alloy were subjected to natural ageing after quenching in water at different temperatures. The specimens for artificial ageing were reheated in the furnace to 177°C after quenching, held for 5 hours and brought out to cool under air at room temperature. XRD reveal the precipitation of Si after age hardening process while the micrographs show the precipitated phases. The optimal combinations of mechanical properties were achieved by quenching in water at room temperature (32°C) and 60°C respectively and natural ageing. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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