Influence of the Dispersoid Material and Forming Process on the Creep Behaviour of Dispersion Strengthened Aluminium

✍ Scribed by Univ.-Prof. Dr.-Ing. E. El-Magd; Assistant Prof. Y. Ismail; Dr. G.-J. Brockmann; Dr. J. Baumgarten

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 628 KB
• Volume: 28
• Category: Article
• ISSN: 0933-5137
• DOI: 10.1002/mawe.19970280111

✦ Synopsis

Abstract

The effect of small percentages of Al4C3 and Al2O3 in dispersion hardened aluminium on the creep behaviour has been investigated. A comparative study was conducted on the group of AlC3Ol and AlC2O2. These two groups were produced by cold isostatic pressing (CIP), but the second group was produced by four several methods of powder forming processes. Creep rupture properties in these alloys were characterized in terms of the stress and temperature dependence of minimum creep strain rate ε~min~, rupture lives t~R~ and creep rate parameter α. Within the stress ranges used in this work, the stress dependence of both ε~min~ and t~R~ at various temperatures of these groups can be represented by power laws:

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