Effect of anodic polarization on stress corrosion cracking of some aluminum alloys

• Autorzy: Czechowski M.
• Języki publikacji: EN

Abstrakty

EN

The results of same corrosion and stress corrosion tests under constant sustained load, made on Al-Mg and Al-Zn-Mg alloys at corrosion and anodic potentials, are presented. The long term exposure of the alloys at anodic potentials is shown to be accompanied by fast failure, remarkable decrease in the tensile strength, very deep lass of plasticity and substantial uniform or intergranular layer corrosion of surface layer. The artificial aging improves the resistance of the Al-Zn-Mg alloys to failure and corrosion. Stress corrosion cracking is conc1uded to be mainly caused by dissolution mechanism rather than by entry of hydrogen.

Słowa kluczowe

EN

aluminum alloys; potential; stress corrosion cracking

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2007
• Tom: Vol. 7, nr 1(11)
• Strony: 13--20
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Czechowski M.

• Gdynia Maritime University, Faculty of Marine Engineering, Gdynia, Poland

Bibliografia

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• [5] Briant C. L: Metallurgical Aspects of Environmental Fai1ure, Amsterdam: E1sevier, 1985.
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• [7] Nguyen T. H., Brown B. F., Foley R. T.: Corrosion, 38 (1982): p. 319.
• [8] Giba1a R., Hehemann R. F., eds.: Hydrogen Embrittlement and Stress Corrosion Cracking, Metals Park, OH: ASM 1984, p. 271.
• [9] Chu W.Y., Wang Y. B., Hsiao C. M.:, Corrosion, 38 (1982): p. 561.
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• [11] Sprowls D. O., Brown R. H.: "Stress Corrosion Mechanisms for Aluminum Alloys", held September 11-15,1967, Conference on Fundamental Aspects of Stress Corrosion Cracking (Columbus, OH: Ohio State Universit, 1967), p. 466. 12. M.
• [12] Czechowski M., Zie1inski A: Effect of cathodic polarization on failure and degradation of mechanical properties of some aluminium alloys. Scripta Metal. et Mater, 2( 1994, pp. 169-174.
• [13] Christodolou L, Flower H. M., Acta Metall, 28(1980), 481.