Plastic deformation delocalization at cryogenic temperatures in a nickel-based superalloy - IMT Mines Albi-Carmaux Accéder directement au contenu
Article Dans Une Revue Acta Materialia Année : 2024

Plastic deformation delocalization at cryogenic temperatures in a nickel-based superalloy

Milan Heczko
Mike Reynolds
Kun Zhang
Damien Texier
Valery Valle

Résumé

A nickel-based superalloy is examined during monotonic deformation from ambient to cryogenic temperatures, reaching as low as liquid helium temperature. A detailed multimodal analysis of the microstructure and plasticity is conducted to discern changes in deformation mechanisms and plastic deformation localization under cryogenic conditions. This study employs high-resolution digital image correlation and transmission electron microscopy to identify the deformation mechanisms and understand their influence on plastic deformation localization as the temperature varies. At cryogenic temperatures, unusual plastic deformation localization processes are observed, attributed to the competing activation of a range of deformation processes. Furthermore, a mechanism of slip delocalization, i.e., local plastic deformation homogenization through closely spaced slip, is noted at these extreme temperatures. Ultimately, the impact of the microstructure is identified across the temperature range, from room to cryogenic temperatures.
Fichier sous embargo
Fichier sous embargo
0 5 2
Année Mois Jours
Avant la publication
mercredi 18 décembre 2024
Fichier sous embargo
mercredi 18 décembre 2024
Connectez-vous pour demander l'accès au fichier

Dates et versions

hal-04617366 , version 1 (12-07-2024)

Identifiants

Citer

Dhruv Anjaria, Milan Heczko, Rephayah Black, Chris Bean, Mike Reynolds, et al.. Plastic deformation delocalization at cryogenic temperatures in a nickel-based superalloy. Acta Materialia, 2024, 276, pp.120106. ⟨10.1016/j.actamat.2024.120106⟩. ⟨hal-04617366⟩
2 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More