Year: 2025
Type: article
Abstract: : The industrial 6063 Al-Mg-Si alloy was subjected to solution heat treatment, water quenching, and ageing at different heat treatment times and temperatures, such as natural ageing (NA) at room temperature, pre-ageing (PA) at elevated temperatures of 80-120 °C, and artificial ageing (AA) at 180 °C. This study investigates how clusters and precipitates formed during various ageing processes impact the mechanical properties of 6063 Al-Mg-Si alloy. The results showed that the PA temperature plays a crucial role in the formation of clusters, while AA is critical for the formation of hardening precipitates (β’’). PA at ≤ 100 °C produced clusters similar to those formed during NA, while PA at 120 °C produced more stable clusters (pre-hardening precipitates) (β’’ nuclei). PA followed by AA at 180 °C for 6 hours increased the hardness and the tensile strength to values similar to AA without prior PA for PA ≤ 100 °C. AA after PA at 120 °C resulted in higher values of hardness and tensile strength. A good correlation was found between Vickers hardness, yield strength, and tensile strength, which agrees with the literature.
Source: Jordan Journal of Physics
DOI: 10.47011/18.3.6
Author: Mazen A. Madanat
Institution: Royal Scientific Society
Language: English
Subfield: Metals and Alloys
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7202346646