DSC study on carbide precipitation reaction in Inconel 600

Study of solid state transformations and their effect on mechanical response in the stoichiometric Ni2Cr using in-situ synchrotron radiation diffraction experiments

“…Journal Pre-proof Cr 23 C 6 , as the carbides observed in the E3 state (Figure 4b), that precipitate during heating. This precipitation has been extensively described in Ni-Cr alloys [9][10][11][12][13].…”

“…In the E0 condition, material heat treated at 1100 °C for 24 hours, carbon atoms remain totally in solid solution. This carbide precipitation has been extensively described in nickel-based alloys [9][10][11][12][13].…”

“…Due to their small size and the large matrix effect in semi-quantitative microanalyses, it is difficult to establish the precise stoichiometry of these carbides. Nevertheless, they could probably correspond to M 26 C 3 , Cr 7 C 3 and M 6 C type carbides, which are the most common carbides in nickel-based alloys with similar chromium contents [9][10][11][12][13]. As these particles are not found in the E0 condition, but the remaining samples, this implies a precipitation of carbides during the heat treatment at 500 °C.…”

“…Additionally, the sensitization phenomenon reported in nickel-based alloys should be equally considered. Formation of carbides at grain boundaries could embrittle the material by results in a reduction of the ductility and promoting intergranular failure [9][10][11][12][13].…”