Structure Formation and Corrosion Resistance of Austenitic Steel Treated with High-Temperature Energy Sources

Ekaterina A. Krivonosova, Ekaterina K. Krivonosova and Ilya S.Ponomarev

Modern Applied Science, 2015, vol. 9, issue 9, 179

Abstract: The results obtained in investigations of stress corrosion specimens of 08Cr18Ni10Ti steel, produced by welding with electrodes with basic and rutile coatings, are discussed. We present the results of metallographic analysis of the surface of corrosion failure. Investigation of stress corrosion cracking tests performed by automatic measurement of deflection patterns, depending on the test time, using the displacement sensor. We found that two structural factors – structure homogeneity of weld metal and morphology of non-metallic inclusions – provide high corrosion resistance. The experimental results show that the metal of the welded joints in the high-alloy chromium-nickel austenitic steels produced with the electrodes with a basic coating has higher resistance to corrosion failure in the corrosive medium of chloride salts in comparison with the weld metal produced with the rutile electrodes.

Date: 2015
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