Behavior of Fe-Mn-Al-C steels during cyclic tests

Alloys of the FeMnAlC system have been used for cryogenic purposes and for applications up to 673 K, At low temperatures, they have in general a bette r performance than austenitic Cr-Ni steels as far as fatigue is concerned, but are inferior to martensitic Cr steels, However, since the fatigue stren gth of FeMnAlC alloys in the temperature range of 523 to 823 K is higher th an at room temperature, the present work has been conducted to describe the behavior of such alloys under the action of cyclic loading, including elas to-plastic deformation and cyclic temperatures. It has been concluded that components can be successfully subjected to cyclic loads in the elasto-plas tic regime and to periodic changes in temperature under normal service cond itions.