Heat treatment possibilities for an in ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Heat treatment possibilities for an in situ βTi-TiC composite made by laser powder bed fusion
Auteur(s) :
Dadbakhsh, Sasan [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Mertens, Raya [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Ji, Gang [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Vrancken, Bey [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Vanmeensel, Kim [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Fan, Haiyang [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Addad, Ahmed [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Kruth, Jean-Pierre [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Mertens, Raya [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Ji, Gang [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Vrancken, Bey [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Vanmeensel, Kim [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Fan, Haiyang [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Addad, Ahmed [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Kruth, Jean-Pierre [Auteur]
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
Titre de la revue :
Additive Manufacturing
Pagination :
101577
Éditeur :
Elsevier BV
Date de publication :
2020-12
ISSN :
2214-8604
Discipline(s) HAL :
Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Résumé en anglais : [en]
After laser powder bed fusion (LPBF) of an ultra-strong in situ TiC whisker reinforced β-Ti composite, this paper investigates the evolution of microstructure and mechanical properties in response to heat treatment at ...
Lire la suite >After laser powder bed fusion (LPBF) of an ultra-strong in situ TiC whisker reinforced β-Ti composite, this paper investigates the evolution of microstructure and mechanical properties in response to heat treatment at different temperatures. Using in depth nano-SEM and TEM analyses, it is shown that ageing at 400 °C rounds the whiskers, annihilates the strain fields and grows Mo segregated nano-cells, but without improving the ductility. In contrast, ageing at 600 °C enables the transformation of metastable β to a lamellar β + α, leading to a dual phase matrix embedding TiC particles. This is in such a manner that extra ageing at 600 °C coalesces the nano-lamellar α + β microstructure to form a coarser micro-lamellar α + β matrix. This microstructure achieves 66 % of the compressive deformation of Cp-Ti, and over 1400 MPa compressive strength after 1 h of ageing at 600 °C. Despite this success under compression, hard and stiff TiC particles may still cause large spherical fractured voids, severely limiting the plastic deformation under tension.Lire moins >
Lire la suite >After laser powder bed fusion (LPBF) of an ultra-strong in situ TiC whisker reinforced β-Ti composite, this paper investigates the evolution of microstructure and mechanical properties in response to heat treatment at different temperatures. Using in depth nano-SEM and TEM analyses, it is shown that ageing at 400 °C rounds the whiskers, annihilates the strain fields and grows Mo segregated nano-cells, but without improving the ductility. In contrast, ageing at 600 °C enables the transformation of metastable β to a lamellar β + α, leading to a dual phase matrix embedding TiC particles. This is in such a manner that extra ageing at 600 °C coalesces the nano-lamellar α + β microstructure to form a coarser micro-lamellar α + β matrix. This microstructure achieves 66 % of the compressive deformation of Cp-Ti, and over 1400 MPa compressive strength after 1 h of ageing at 600 °C. Despite this success under compression, hard and stiff TiC particles may still cause large spherical fractured voids, severely limiting the plastic deformation under tension.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Équipe(s) de recherche :
Métallurgie Physique et Génie des Matériaux
Date de dépôt :
2020-10-04T13:17:05Z
2020-10-08T08:06:55Z
2020-10-08T08:06:55Z
Fichiers
- Sasan paper.pdf
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- Accès libre
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