The Relationship between Stress Corrosion Cracking and Corrosion Behaviors in 7NO1 Alloy : Studies on Stress Corrosion Cracking in Al-Zn-Mg Alloy (2nd Report)
Memoirs of the Faculty of Engineering, Yamaguchi University Volume 28 Issue 2
Page 259-264
published_at 1978
Title
7NO1 合金の応力腐食割れと腐食挙動の関係 : Al-Zn-Mg 系合金の応力腐食割れに関する研究(第 2 報)
The Relationship between Stress Corrosion Cracking and Corrosion Behaviors in 7NO1 Alloy : Studies on Stress Corrosion Cracking in Al-Zn-Mg Alloy (2nd Report)
Source Identifiers
In the present paper the relationship between stress corrosion cracking (SCC) and corrosion behaviors of Al-Zn-Mg 7NO1 alloy in NaCl solutions was investigated metallurgically and electro chemically. For lower temperature (below 60℃)-and shorter time-aged (ie. cold aged) alloys, the susceptibilities to SCC and intergranular corrosion were in a good correlation, and the values of the observed activation energy of SCC and dissolution were equal approximately. The SCC is essentially caused by active-path corrosion of pre-existed anodic zone along grain boundaries. For higher temperature-and longer time-aged (ie. warm aged) alloys, the contribution of corrosion actions to SCC process was relatively small. The crack growth involved a mechanical rupture process. For high temperature (above 85℃)-and shorter time-aged alloys, the SCC was assisted by easy crack initiation due to highly selective exfoliation corrosion.
Languages
jpn
Resource Type
departmental bulletin paper
Publishers
山口大学工学部
Date Issued
1978
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools
工学部