2015•Applied Mechanics and MaterialsOpen access

Effect of Deformation Parameters on Microstructure Evolution of Hot Deformed Superalloy GH4169

Tong He, Jing Hong Tuo, Zhihua Li, Qing An Tai

Abstract

The evolution of the microstructure of a typical nickel-based superalloy GH4169 is investigated by the hot compression tests. The microstructural parameters such as fraction of recrystallization and grain size were analysed quantitatively. The results show that the effects of deforming temperature and strain rate on the dynamic recrystallized grain size are significant. With the deformed temperature increase and the strain rate decrease, the dynamic recrystallized grain size increases.

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Key concepts: Superalloy, Materials science, Dynamic recrystallization, Microstructure, Grain size, Metallurgy, Strain rate, Recrystallization (geology)