EFFECT OF MICROSTRUCTURE ON STRESS-CORROSION CRACKING OF AN AL-ZN-MG-CU ALLOY

Authors
PUIGGALI M ZIELINSKI A OLIVE JM RENAULD E DESJARDINS D CID M
Citation
M. Puiggali et al., EFFECT OF MICROSTRUCTURE ON STRESS-CORROSION CRACKING OF AN AL-ZN-MG-CU ALLOY, Corrosion science, 40(4-5), 1998, pp. 805-819
Citations number
20
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
Corrosion science → ACNP
ISSN journal
0010938X
Volume
40
Issue
4-5
Year of publication
1998
Pages
805 - 819
Database
ISI
SICI code
0010-938X(1998)40:4-5<805:EOMOSC>2.0.ZU;2-B
Abstract
The susceptibility to stress corrosion cracking (SCC) of the Al-Zn-Mg- Cu French 7010 alloy of different temper has been investigated by Slow Strain Rate Testing. The tests have been carried out at strain rate r anged between 10(-5) and 10(-7) s(-1), at corrosion potential and at c athodic polarisation, in NaCl and NaCl + As2O3 solution. The lowest su sceptibility to SCC of overaged alloy has been explained by presence o f large phase precipitates which increased the alloy resistance to pit ting and intergranular corrosion, changed the conditions of crack init iation and trapped the absorbed hydrogen. (C) 1998 Published by Elsevi er Science Ltd. All rights reserved.