FACTORS OF CRACK INITIATION AND MICROCRACK PROPAGATION IN ALUMINUM LITHIUM 2091 AND IN ALUMINUM 2024
Résumé
Initiation and microcrack propagation stages were investigated by optical microscopic observations of fatigue darnage. The differences observed at high fatigue lives on S-N curves are found to correlate with the nature of initiation sites. It is shown that microcrack growth rates are equivalent for both 2024 T351 and 2091 T8 alloys, though long crack growth rates for 2091 T8 are lower as compared to those of 2024 T351.
Domaines
Articles anciensOrigine | Accord explicite pour ce dépôt |
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