Investigation of fracture toughness improvement technique for aluminum 6351-T6

R. N. Ibrahim, Y. C. Lam

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An example of significant industrial application for which the improvement of the apparent fracture toughness will bring a saving in the order of a few million dollars is the manufacturing of gas cylinders and their maintenance. Aluminum cylinders in particular present a challenging task as they are susceptible to crack growth under a static load (internal pressure). In this investigation a new thermo-mechanical technique was used for the improvement of the apparent fracture toughness (K1c). This could increase significantly the safety margin and life of the cylinders. The determination of K1c was carried out using the newly-developed small cylindrical specimen which has considerable cost advantage over the conventional compact tension specimen. Experiments on Aluminum 6351-T6 cylindrical specimens confirmed the ability of this technique for the improvement of the apparent fracture toughness (K1c) of this alloy.

Original languageEnglish
Title of host publicationProceedings of the 5th Australian Aeronautical Conference 1993
Number of pages4
Edition93 pt 6
Publication statusPublished - 1 Dec 1993
EventAustralian Aeronautical Conference 1993 - Melbourne, Australia
Duration: 13 Sept 199315 Sept 1993
Conference number: 5th

Publication series

NameNational Conference Publication - Institution of Engineers, Australia
ISSN (Print)0313-6922


ConferenceAustralian Aeronautical Conference 1993

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