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Information × Registration Number 0219U003014, 0118U000485 , R & D reports Title Development of surface nanostructurization method of structural steels to increase fracture resitance in corrosion-hydrogenating media popup.stage_title Head Khaburskyi Yaroslav, Registration Date 29-01-2019 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 The fatigue and corrosion fatigue of 50KhN and 60Kh2M roll steels in the initial state and with the surface nanocrystalline structure formed by mechanical-pulse treatment were studied. It was shown the increment of fatigue limit and corrosion fatigue limit of these steels in 3% water solution of NaCl. Such increment is reached due to surface nanocrystallization, residual compression stresses and favorable redistribution of alloying elements in the surface layer. It has been established that contact endurance and wear resistance of 60Kh2M steel after mechanical pulse treatment increased in 3.6 and 1.8-2 respectively. The contact fatigue of carburized and grinded 20KhN3A steel with surface nanocrystalline structure in oil and water solution with quartz sand was studied. It was shown, that mechanical-pulse treatment improved its contact fatigue and it depends on processing regimes and used working medium. Product Description popup.authors Максимів Ольга Володимирівна popup.nrat_date 2020-04-02 Close