Study Precipitation of Semi-Solid Cast 2024 Aluminium Alloy for Friction Stir Welding
DOI: 10.14416/j.ind.tech.2025.04.012
Keywords:
Friction Stir Welding, Precipitate, Dislocation, GP ZoneAbstract
The purpose of this research was to study precipitation in friction stir welded semi solid 2024 aluminium alloy (SSM Al2024). The shape of stir head is cylindrical was employed with 3 parameters which composed of rotational speed (790 rpm), welding speed (22 and 36 mm/min). The results showed that mechanism and effect of precipitated on welded in various areas. The region of base metal (BM) was illustrated the dispersion of precipitate GP zone in matrix obviously and eutectic phase was found dispersedly at grain boundary of globular alpha-aluminium grain (α-Al) and rod-T phase dispersed within the Al matrix. The region stir zone consists of precipitate S´/ S (Al2CuMg) and rod-T phase (Al20Cu2Mn3). While, region TMAZ of the RS and AS was GP zone, precipitate S´/ S, rod-T phase and dislocation. Effect of precipitation on mechanical properties wherewith difference between structure and volume.
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