Abstract
This work is devoted to highlighting the beneficial effects of compressive residual stresses, their relaxation and the associated fatigue crack initiation and propagation in two contrasting materials. Accordingly, rotating bend fatigue tests were conducted on essentially un-notched specimens made from 7075 T7351 aluminium zinc alloy and 080M40 medium carbon steel. The tests involved assessing the life of un-peened, peened, and re-peened specimens where re-peening was applied after the exhaustion of a proportion of the specimens anticipated fatigue life. Whilst the steel demonstrated a very significant recovery of fatigue life associated with the re-peening treatment, this was not the case for the aluminium even though peening had proved highly beneficial. Residual stress measurements and fractographic examination were used to elucidate this discrepancy.
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References
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© 1990 Springer Science+Business Media Dordrecht
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Hammond, D.W., Meguid, S.A. (1990). Fatigue Fracture and Residual Stress Relaxation in Shot-Peened Components. In: Meguid, S.A. (eds) Surface Engineering. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0773-7_40
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DOI: https://doi.org/10.1007/978-94-009-0773-7_40
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6834-5
Online ISBN: 978-94-009-0773-7
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