Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8038651 | CIRP Annals - Manufacturing Technology | 2018 | 6 Pages |
Abstract
Following drilling, fatigue life trials were performed on as-drilled and deburred specimens made from Ti-6Al-4V, AA7010 and AA2024, with feed rates varied at 2 levels. Deburring dramatically increased the fatigue performance of the Ti-6Al-4V and AA7010 samples by 69% and 283% respectively, but there was no significant effect on the AA2024 alloy. Fractography showed failure initiated near the exit burrs in Ti-6Al-4V and AA7010 specimens but not in the AA2024 workpieces. Correlation (R2) of fatigue notch factor against the sum of entrance and exit burr height was 0.68 and 0.79 for Ti-6Al-4V and AA7010 respectively, compared to 0.54 for AA2024.
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Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Ali M. Abdelhafeez, Sein Leung Soo, David K. Aspinwall, Anthony Dowson, Dick Arnold,