Structure-phase states of silumin surface layer after electron beam and high cycle fatigue

12th International Conference on Gas Discharge Plasmas and Their Applications

Konovalov, S.V.^1 ; Alsaraeva, K.V.^1 ; Gromov, V.E.^1 ; Ivanov, Yu F.^2,3,4

Siberian State Industrial University, Novokuznetsk, Russia^1

Institute of High Current Electronics Siberian Branch, Russian Academy of Science, Tomsk, Russia^2

National Research Tomsk State University, Tomsk, Russia^3

National Research Tomsk Polytechnic University, Tomsk, Russia^4

关键词: High cycle fatigue;    High intensity;    Irradiation modes;    Nanosized structures;    Near-surface layers;    Pulsed electron beams;    Stress concentrators;    Surface layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/652/1/012028/pdf
DOI  :  10.1088/1742-6596/652/1/012028

来源: IOP

【 摘 要 】

Modification of eutectic silumin surface has been implemented by high-intensity pulsed electron beam. The irradiation mode has been revealed; it allows increasing silumin fatigue life in more than 3.5 times. It has been established that the main reason of this fact is the formation of a multiphase submicro- and nanosized structure. It has been elicited that the most danger stress concentrators are large silicon plates situated on the surface and near-surface layers.