“…However, the peak belonging to the β phase was not distinctive after aging according to Figure . This removal of the retained β phase and the increase in α phase during the aging process aligns with findings in other studies. − The variation of the β-phase fraction is related to the diffusive transformation that occurs during aging. This process results in the decomposition of the retained β phase into a thermodynamically more stable microstructure, which contains a higher amount of α phase .…”