Effect of applied potential on stress corrosion cracking of 2017 aluminum alloy

The relationship between stress corrosion and applied potential has been investigated in 1M NaCl solution by using 2017 aluminum alloy with various aging structure. Potentiostatic stress corrosion test showed that corrosion form (roughness general corrosion, uniform general corrosion, pitting corros...

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Bibliographic Details
Published inJournal of Japan Institute of Light Metals Vol. 35; no. 2; pp. 85 - 91
Main Authors SHIOKAWA, Makoto, IZU, Masaya, WATANABE, Yasuyuki, SATO, Eiichi
Format Journal Article
LanguageEnglish
Japanese
Published The Japan Institute of Light Metals 1985
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Summary:The relationship between stress corrosion and applied potential has been investigated in 1M NaCl solution by using 2017 aluminum alloy with various aging structure. Potentiostatic stress corrosion test showed that corrosion form (roughness general corrosion, uniform general corrosion, pitting corrosion, intergranular corrosion) was depend on the applied potential and it was separated in four potential regions. The similar tendency could be seen in any aging structure. The critical potential of region that intergranular corrosion occured in was in the vicinity of pitting potential of each aging specimen. Cathodic polarization curves under stress showed the limiting current. From this result, it was considered that intergranular corrosion is governed by cathode, and the reduction of dissolved oxygen plays an important part in cathodic reaction of this alloy.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0451-5994
1880-8018
DOI:10.2464/jilm.35.85