The influence of solution heat treatment temperature on mechanical and structural properties of the EN AW-6060 and EN AW-6082 aluminium alloys
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Date
2023
Authors
Stamenković, Uroš
Marković, Ivana
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Fakultet Tehničkih nauka, Kosovska Mitrovica
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Zbornik izvoda radova - Jedanaesti simpozijum o termodinamici i faznim dijagramima sa međunarodnim učešćem, Kosovska Mitrovica, 23-24. jun 2023, 2023, 19-20
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Abstract
Aluminium alloys from the 6000 series are very susceptible to precipitation hardening (ageing). The process of precipitation hardening includes solution heat treatment (heating and quenching) and ageing at a defined temperature and time. The parameters that define all three of these processes have a direct impact on mechanical, physical, and structural properties. One of these parameters is the solution heat treatment temperature. The influence of solution heat treatment temperature on the microhardness and microstructure of the EN AW-6060 and EN AW-6082 aluminium alloys was studied in this paper. The investigated alloys were solution heat treated (SHT) at five different temperatures, ranging from 510 °C to 590 °C. The influence of solution heat treatment temperature on microhardness was investigated in three different stages: immediately after quenching, after quenching and partial ageing (180 °C, 1 h) and after quenching and full ageing (180 °C, 5-6 h). The samples that exhibit the lowest and highest values of microhardness after the quenching and full ageing were separated and examined by optical microscopy. Results show that the increase in solution heat treatment temperatures leads to an increase in microhardness due to better homogenization and better dissolution of the equilibrium phases.
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ISBN
978-86-81656-63-1
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ARR