ABSTRACT
Using a 10 kW high temperature box-type furnace, the solution treatment processes were 1050°C × 1 h, 1100°C × 1 h, 1150°C × 1 h, followed by water-cooling. For the ageing treatment, using a 4 kW moderate box-type furnace, the processes were 450°C × 8 h, 470°C × 8 h, 490°C × 8 h and 510°C × 8 h, then water-cooling.
