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High Cycle Fatigue Performance of Precipitate Strengthened Aluminium Alloys

thesis
posted on 2019-05-07, 03:54 authored by QI ZHANG
The high cycle fatigue (HCF) performance of a model Al-4Cu-0.05Sn alloy and three commercial AA2024, AA7050 and AA6061 alloys with different ageing conditions is studied in this thesis. The origin of enhanced fatigue performance in under aged Al alloys is due to the coupling of precipitate free zones (PFZ's) and dynamic precipitation during deformation. A pre-fatigue cyclic training process is applied to utilise the origin to develop a modified initial microstructure and a better fatigue performance is achieved.

History

Campus location

Australia

Principal supervisor

Christopher Ross Hutchinson

Additional supervisor 1

Matthew Barnett

Year of Award

2019

Department, School or Centre

Materials Science and Engineering

Course

Doctor of Philosophy

Degree Type

DOCTORATE

Faculty

Faculty of Engineering

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    Faculty of Engineering Theses

    Categories

    Keywords

    Aluminium AlloyFatigueDynamic PrecipitationMetals and Alloy Materials

    Licence

    In Copyright

    Exports

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