Contents Menu

Electrochemical Behaviors and Stress Corrosion Cracking of 5083 Aluminum Alloy (2nd Report)

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 26 Issue 2 Page 125-132
published_at 1976
KJ00000156111.pdf
[fulltext] 892 KB
Title
5083合金の電気化学的挙動と応力腐食割れ(第 2報)
Electrochemical Behaviors and Stress Corrosion Cracking of 5083 Aluminum Alloy (2nd Report)
Creators Osaki Shuhei
Source Identifiers
Strained electrode reactions of 5083 aluminum alloy in 5.3% NaCl + 0.3% H_2O_2 aqueous solutions were studied as a function of tensile stress, strain, electrode potential, solution pH and grain boundary β precipitate by means of a constant strain rate method. An increase in rate of anodic dissolution was observed on application of plastic strain. The shape of the current / strain curves suggested that the anodic dissolution was controlled by the rate of oxide film rupture and by the subsequent rate of repassivation. The grain boundary with β precipitates was readily attacked at lower potential and by smaller strain than those when grain began to be attacked. Only at potentials higher than the breakdown potential, corresponding to oxide film rupture, of grain boundary stress corrosion cracking could occur. It was suggested that the susceptibility to stress corrosion cracking would depend on the difference in breakdown potential between grain boundary and grain.
Subjects
工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1976
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部