Conclusions
The fatigue and corrosion-fatigue resistance of low-alloy steels increases as degree of plastic prestraining increases to 29%. The resistance of the 08kp steel prestrained and hardened by surface plastic deformation and its welded joints to fatigue and corrosion-fatigue fracture is higher than for the 08GSYuT alloyed steel. The procedures of pneumatic shot blasting and shot blasting prove to be efficient methods for increasing the cyclic and low-cycle durability of welded joints both in air and corrosive media. The corrosive medium considerably decreases the low-cycle durability of welded joints of sheet steels. The effect of the medium is more pronounced for alloyed steels and becomes weaker as the amplitude of strains increases.
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Reference
M. P. Berezhnyts’ka. S. M. Kyrylenko. and O. V. Paustovskyi, “Determination of residual stresses after surface hardening.”Fiz- Khim. Mekh. Mater.,33. No. 6. 105–109 (1997).
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Translated from Fizyko-Khimichna Mekhanika Materially, Vol. 36, No. 3, pp. 121–122. May-June, 2000.
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Berezhnyts’ka, M.P., Huslyakova, H.P. & Tkachov, V.I. Enhancement of the durability of structural steels and their welded joints by plastic deformation. Mater Sci 36, 463–465 (2000). https://doi.org/10.1007/BF02769613
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DOI: https://doi.org/10.1007/BF02769613