In situ transformations during SLM of an ultra-strong TiC reinforced Ti composite - Université de Lille Accéder directement au contenu
Article Dans Une Revue Scientific Reports Année : 2020

In situ transformations during SLM of an ultra-strong TiC reinforced Ti composite

Résumé

This work demonstrates a successful in situ method capable of producing an ultra-strong novel Ti composite without aluminium and vanadium. In this method, selective laser melting is used to conduct in situ alloying and reinforcing of a Ti/10.5 wt% Mo2C powder mixture. It is shown that this leads to a metastable β-Ti matrix homogeneously reinforced by high aspect ratio, 50–200 nm wide and up to several micrometre long TiC whiskers. The transformations of the phases are controlled by decomposition, dissolution, diffusion, and reformation of constituents. The whisker morphology of in situ formed TiC particles is associated with directional crystal growth along the TiC<110> direction. The developed TiC reinforced β-Ti alloy combines a hardness over 500 HV, a Young’s modulus of 126 GPa, and an ultimate compressive strength of 1642 MPa. Improving the ductility of this composite is the subject of another work.
Fichier principal
Vignette du fichier
s41598-020-67434-3.pdf (3.41 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02922333 , version 1 (26-08-2020)

Licence

Identifiants

Citer

Sasan Dadbakhsh, Raya Mertens, Kim Vanmeensel, Gang Ji, Jean-Pierre Kruth. In situ transformations during SLM of an ultra-strong TiC reinforced Ti composite. Scientific Reports, 2020, Scientific Reports, 10 (1), pp.1-12. ⟨10.1038/s41598-020-67434-3⟩. ⟨hal-02922333⟩
35 Consultations
101 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More