*2.2. Heat Treatment of As-Cast Alloys*

Table 2 shows the heat treatment cycles used to produce the as-cast alloy. First, they were solution treated at 510 ◦C for 2 h and then 530 ◦C for 20 h. Subsequently, water quenched (WQ) and immediately subjected to natural aging for different lengths of time (unaged, 24 h, 96 h). Finally, artificial aging was performed with T7 tempering at 190 ◦C for 5 h.


**Table 2.** Heat treatment cycles for preparation of as-cast alloys.
