Microstructures obtained by simulations performed in the dilatometer with the same heating and cooling rate as found in the WAAM process (400 and 30 K s−1, respectively); (a) heated to 1100 °C, slightly above the β transus, (b) and (c) re-heated to peak temperatures of 900 and 950 °C showing increased coarsening, (d) heated to a similar temperature to (c), held longer (for 3 s), and cooled with double the rate.