Lightweight Fe–Mn–Al–C Steels: Current State, Manufacturing, and Implementation Prospects

The relevance of research on lightweight Fe–Mn–Al–C alloys is continuously increasing. This is justified by their good comprehensive mechanical properties, as well as their potential to improve fuel efficiency and reduce CO 2 emissions due to their low density. This work examines the effect of alloying elements on the structure and properties of austenitic Fe–Mn–Al–C steels, the trend of formation and distribution of κ‐carbides depending on the content of the main alloying elements. Special attention is paid to the manufacturing process, strengthening methods, and challenges associated with their production. Some issues that require more detailed study for the implementation of lightweight Fe–Mn–Al–C steels in production are also discussed.