[en] A physics-based, uncoupled damage model is calibrated using cylindrical notched round tensile specimens
made of Ti5553 and Ti-6Al-4V alloys. The fracture strain of Ti5553 is lower than for Ti-6Al-4V in the full
range of stress triaxiality. This lower ductility originates from a higher volume fraction of damage sites. By
proper heat treatment, the fracture strain of Ti5553 increases by almost a factor of two, as a result of a
larger damage nucleation stress. This result proves the potential for further optimization of the damage
resistance of the Ti5553 alloy. The damage model is combined with an elastoviscoplastic law in order to
predict failure in a wide range of loading conditions. In particular, a specific application involving bolted
sectors is addressed in order to determine the potential of replacing the Ti-6Al-4V by the Ti5553 alloy.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Ben Bettaïeb, Mohamed; ENSAM Metz France
Van Hoof, Thibault; Cenaero Belgique
Minnebo, Hans; Cenaero Belgique
Pardoen, Thomas; Université Catholique de Louvain - UCL > IMAP
Dufour, Philippe
Jacques, Pascal; Université Catholique de Louvain - UCL > IMAP
Habraken, Anne ; Université de Liège > Département ArGEnCo > Département ArGEnCo
Language :
English
Title :
Micromechanics-Based Damage Analysis of Fracture in Ti5553 Alloy with Application to Bolted Sectors
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