Size Effect on the Tensile Mechanical Behavior of Thin Ti6242S Specimens at 723 K and 823 K - IMT Mines Albi-Carmaux Accéder directement au contenu
Article Dans Une Revue Metallurgical and Materials Transactions A Année : 2023

Size Effect on the Tensile Mechanical Behavior of Thin Ti6242S Specimens at 723 K and 823 K

Résumé

The mechanical behavior of titanium-based alloy Ti6242S was investigated under uniaxial tensile loading at 723 K (450 °C) and 823 K (550 °C) under air and argon environments. Microtensile specimens ranging from 1 mm to 100 µm in thickness were tested to investigate the influence of the decrease in thickness on mechanical properties. Fractographic analyses were carried out using scanning electron microscopy. At 450 °C and 550 °C, a decrease in yield strength, ultimate tensile strength, and strain-to-failure with decreasing thickness was observed. These drops in the macroscopic tensile properties of the thinnest specimens result from a combination of oxidation, which further impairs the specimens with a high surface-to-volume ratio, and the overall lower number of colonies of α lamellae contained in thinner specimens. Ti6242S exhibited dynamic strain aging at 450 °C, especially in specimens with thickness below 500 µm.
Fichier principal
Vignette du fichier
Size-Effect-on-the-Tensile-Mechanical-Behavior-of-Thin-Ti6242S-Specimens-at-723-K-and-823-K.pdf (1.42 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03891784 , version 1 (03-01-2023)

Identifiants

Citer

Kevin Cavé, Damien Texier, E. Fessler, D. Monceau, Dominique Poquillon. Size Effect on the Tensile Mechanical Behavior of Thin Ti6242S Specimens at 723 K and 823 K. Metallurgical and Materials Transactions A, 2023, 54, ⟨10.1007/s11661-022-06898-6⟩. ⟨hal-03891784⟩
138 Consultations
47 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More