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Osaki Shuhei

Affiliate Master Yamaguchi University

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
KJ00000156208.pdf
[fulltext] 673 KB
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)
Creators Ohsaki Shuhei
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.
Subjects
機械工学 ( Other)
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