Investigation on some factors affecting crack formation in high resistance aluminum alloys

Aluminum alloys having good mechanical properties are Al-ZnMg alloys (7xxx) and Al-Cu-Li alloys (Weldalite). These alloys may be subjected to stress corrosion cracking. In order to overcome this problem the Al 7050 alloy has been developed and it is widely used for aerospace applications. Despite t...

Full description

Bibliographic Details
Main Authors: A. Brotzu, F. Felli, D. Pilone
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2017-10-01
Series:Frattura ed Integrità Strutturale
Subjects:
Online Access:http://www.gruppofrattura.it/pdf/rivista/numero42/numero_42_art_29.pdf
Description
Summary:Aluminum alloys having good mechanical properties are Al-ZnMg alloys (7xxx) and Al-Cu-Li alloys (Weldalite). These alloys may be subjected to stress corrosion cracking. In order to overcome this problem the Al 7050 alloy has been developed and it is widely used for aerospace applications. Despite that, some components made of this alloy cracked during the manufacturing process including machining and chemical anodization. In a previous work cracked Al 7050 components have been analyzed in order to identify possible causes of crack formation. In this work the susceptibility of this alloy to intergranular corrosion has been analysed and compared with that of other high resistance aluminum alloys
ISSN:1971-8993