Wear resistance of blade materials subjected to stress corrosion
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We study the influence of preliminarily made notches on the fatigue resistance of 12Kh13 steel specimens and the influence of the magnitude of constant and variable loading and the time of holding in corrosive media (in a saturated and deaerated solution of sodium chloride) on the development of pit corrosion. It is shown that the effect of hardening observed after preliminary stress corrosion for 240 h affects the durability of the material in air. At the same time, in corrosive media, this effect is not observed if the time of preliminary holding is greater than 24 h. We also establish the dependences of the diameters of corrosion pits at the bottom of the notch on the loading mode and on the time of holding in the medium.
KeywordsSodium Chloride Fatigue Wear Resistance Sodium Chloride
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