Spall fracture in wrought and additively manufactured Ni-based superalloys subjected to high pressure laser-driven shocks - Laboratoire pour l'utilisation des lasers intenses (LULI)
Article Dans Une Revue Materials Science and Engineering: A Année : 2024

Spall fracture in wrought and additively manufactured Ni-based superalloys subjected to high pressure laser-driven shocks

Résumé

The impact response of Nickel-based superalloys is still poorly documented with respect to the industrial interest in these materials. Here, laser-driven shocks are used to study and compare the dynamic behavior of Rene 65 superalloy with different microstructures at very high strain rates in the order of 106 s−1. Rene 65 specimens studied here are either in cast and wrought or additively manufactured (laser powder bed fusion) and subjected to different heat treatment conditions. Time-resolved velocity measurements provide the yield strength (Hugoniot elastic limit) and spall strength (resistance to dynamic tension) of each variant. In addition, post-recovery characterization gives insight into the initiation and propagation of dynamic fracture, which are shown to depend on the different manufacturing routes and thermal histories.
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Dates et versions

hal-04681806 , version 1 (30-08-2024)

Identifiants

Citer

Etienne Barraud, Thibaut de Rességuier, Samuel Hémery, Jonathan Cormier, Tommaso Vinci, et al.. Spall fracture in wrought and additively manufactured Ni-based superalloys subjected to high pressure laser-driven shocks. Materials Science and Engineering: A, 2024, 911, pp.146944. ⟨10.1016/j.msea.2024.146944⟩. ⟨hal-04681806⟩
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