CONSTRUCTIVE STRENGTH OF THE TUBE STEEL WITH STRUCTURE OF THE NATURAL FERRIT-MARTENSITIC COMPOSITE MATERIAL

Abstract

Results of experimental determination of the processes of development fatigue crack in tube steel with structure of the natural ferrit-martensitic composite material (NFMC) are presented. It is shown that achievement of constructive heavy-duty is caused by special mechanism of the spreading crack in steel with structure of NFMC.