Evolution of the phase composition and defect substructure of rail steel subjected to high-intensity electron-beam treatment

Structural-Scale Levels of Fatigue Durability Increase of Steels and Alloys by Electron-Beam Treatment

“…Электронно-пучковая обработка стали Э76Ф [17] , N = 3 имп.) сопро-вождается плавлением поверхностного слоя толщиной примерно 10 мкм, полным растворением субмикрон-ных частиц карбида типа Мe 23 С 6 , присутствующих в стали в исходном состоянии.…”

Structural evolution of silumin treated with a high-intensity pulse electron beam and subsequent fatigue loading up to failure

“…For 20Kh13 and 08Kh18N10T steels, the main factors are refining the grain and subgrain structure, along with dissolving the carbide phase par ticles in the surface layer [4][5][6][7][8][9][10]. The preferential site for the formation of stress concentrators in rail steel [11][12][13] irradiated with an electron beam is the inter face between the high speed crystallization layer and the thermal effect layer (the melt bath bottom). It has been established that the longer fatigue life of steel irradiated with an electron beam is due to the forma tion of a needle like interface profile, which disperses the stress concentrators and promotes a more uniform plastic flow in the substrate.…”

Temperature field calculation with allowance for heat of chemical reactions under electroexplosion nickel plating of aluminum

“…The disruption of homogeneity of materials by the formation of clearly marked transition layers results in the formation of microcracks at their boundaries. Their presence leads to the decrease in the fatigue life [11], wearresistance, hardness [12] and other characteristics. On the other hand, the availability of the gradient structures favors the increase in the operational properties of the articles [13].…”