Carbides in 110G13L steel

Structural characterization of M7C3-type carbide precipitated in the aging treated 100Mn13 steel

“…By calculating and analyzing the diffraction pattern and comparing it with the parameters of a variety of carbides which may appear in the high manganese steel, it shows that the lamellar pearlite is composed of the ferrite and M 7 C 3 . The spacing between the two adjacent carbides is about The type of carbides in pearlite is M 7 C 3 , which is neither the previously reported M 3 C, [13,14] nor M 13 C 4 , M 5 C 2 and M 3 C 2 . [15] The reason of M 7 C 3 precipitating is that Mn has an effect on decreasing transition temperature and stabilizing M 7 C 3 carbides.…”

“…After aging at 650 C, the flaky carbides at the grain boundaries started re-dissolution and spheroidization. [12,13] The type of carbides and carbides in the pearlite in the high-carbon high manganese steel by the aging treatment was reported as M 3 C by the literature [13] and [14]. Further, Chirc a [15] found many other types of carbides, such as M 13 C 4 , M 5 C 2 and M 3 C 2 .…”

Multiple Interface Structures of M23C6 carbides at Grain Boundary in an Aged 100Mn13 High Carbon High Manganese Steel

“…Thus, the type, orientation relationship, and growth process of carbide precipitated at the interface will have a significant impact on the mechanical properties of steel. Several researchers have investigated that no phase transformations were observed in high carbon high manganese steel even with longer aging temperatures below 400 °C, but a small amount of film-like or granular carbides, such as M 3 C, M 7 C 3 , and M 23 C 6 , began to precipitate from austenite grain boundary in different alloying high manganese steels at low aging temperature from 400 to 500 °C. − Although both phase transformation driving force and nucleation driving force, as thermodynamic conditions of carbide precipitation in the steel, are important factors to determine the carbide precipitation type, some phases are inhibited from precipitation, attributed to competitive mechanisms when multiple phase transformations occur simultaneously in the steel to precipitate different types of carbides. According to thermodynamic theory, carbide with larger nucleation driving force is precipitated preferentially.…”