Response of Partly Recrystallized Microstructure to the Rapid Heat Treatment in TC18 Alloy

Figure 16

The centre regions of specimens with (a) 9.42% NR percentage, (b) 37.36% NR percentage, and (c) 50.75% NR percentage after rapidly heating to 875°C and directly ageing at 500°C for 8 hours; (d) centre region of specimen with 34.62% NR percentage after rapidly heating to 950°C and directly ageing at 500°C for 8 hours.