Title :

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

Author(s) :

Dadbakhsh, Sasan [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
KTH Royal Institute of Technology [Stockholm] [KTH]
Mertens, Raya [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Vanmeensel, Kim [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Ji, Gang [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Kruth, Jean-Pierre [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]

Journal title :

Scientific Reports

Abbreviated title :

Sci Rep

Volume number :

10

Publisher :

Springer Science and Business Media LLC

Publication date :

2020-06-29

ISSN :

2045-2322

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Chimie/Matériaux

English abstract : [en]

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 ...
Show more >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.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2020-06-30T07:08:02Z
2020-08-26T07:47:31Z