Effect of Heat Treatment on the Microstructural Characteristics of IN738 Turbine Blade
It was observed that both primary and secondary gamma prime precipitates were more significantly influenced by the solid solution treatment temperature as compared to the following cooling rate. Single and duplex size precipitate distribution with different average size could be obtained through the appropriate solid solution and aging treatment. Micro-hardness test result indicated that single size distribution of gamma prime precipitates provides higher hardness than duplex size distribution.
Hyungsun Kim, Jian Feng Yang, Chuleol Hee Han, Somchai Thongtem and Soo Wohn Lee
H. S. Yun et al., "Effect of Heat Treatment on the Microstructural Characteristics of IN738 Turbine Blade", Materials Science Forum, Vol. 695, pp. 405-408, 2011