This helps to the design of thermomechanical processing
conditions for the present research. The as-cast ingots were
reheated to 1200 °C for 4 h, followed by hot-rolling reduction from
30 mm to 3 mm thick plates at 1100 °C and then quenched in cold
water before annealed at 600 °C and 700 °C respectively for 6 h and
then quenched in cold water again.