Precipitation kinetics and morphology of grain boundary carbides in Ni-base superalloy Haynes 282
C Joseph, C Persson… - Metallurgical and Materials …, 2020 - Springer
C Joseph, C Persson, M Hörnqvist Colliander
Metallurgical and Materials Transactions A, 2020•SpringerPrecipitation of grain boundary carbides in a mill-annealed Haynes 282 in the temperature
range 650° C to 1120° C was investigated. The kinetics of M 23 C 6 was significantly faster
than that of M 6 C. With increasing aging temperature, the morphology changes from
continuous film to an interconnected brick wall structure and finally to discrete particles. No
morphological changes were observed with aging time. Serrated grain boundaries formed
during aging around 750° C. The solvus temperature for both M 23 C 6 and M 6 C was …
range 650° C to 1120° C was investigated. The kinetics of M 23 C 6 was significantly faster
than that of M 6 C. With increasing aging temperature, the morphology changes from
continuous film to an interconnected brick wall structure and finally to discrete particles. No
morphological changes were observed with aging time. Serrated grain boundaries formed
during aging around 750° C. The solvus temperature for both M 23 C 6 and M 6 C was …
Abstract
Precipitation of grain boundary carbides in a mill-annealed Haynes 282 in the temperature range 650 °C to 1120 °C was investigated. The kinetics of M23C6 was significantly faster than that of M6C. With increasing aging temperature, the morphology changes from continuous film to an interconnected brick wall structure and finally to discrete particles. No morphological changes were observed with aging time. Serrated grain boundaries formed during aging around 750 °C. The solvus temperature for both M23C6 and M6C was approximately 1100 °C.
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