English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/97145
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

Title

Processing and characterisation of cermet/hardmetal laminates with strong interfaces

AuthorsGotor, F.J. ; Bermejo, Raúl; Córdoba, J.M. ; Chicardi, E. ; Medri, V.; Dalle, Fabbriche D.; Torres, Y.
KeywordsInterface/interphase
Cermet
Residual stress
Mechanical properties
Cemented carbide
Issue Date2014
PublisherElsevier
CitationMaterials & Design 58: 226- 233 (2014)
AbstractCemented carbides and cermets are potential materials for high speed machining tools. However, cemented carbides are not chemically stable at high temperature and cermets present poor fracture toughness. Novel cermet/hardmetal multilayer systems show a huge potential for this intended application. It would be possible to achieve the right balance of the required thermomechanical properties using cermet as temperature protective outer layers and hardmetal as reinforcement layers. In this work, preliminary results on the microstructural and mechanical characterisation of a multilayer TiCxN1-x-Co/WC-Co composite densified by hot pressing are presented, with special attention to the properties of the interface. Microstructural observations revealed the existence of strong bonding interfaces between cermet and hardmetal layers due to chemical interaction during the sintering process. As a consequence, owing to the different coefficient of thermal expansion between cermet and hardmetal, a tensile and compressive biaxial residual stress of σres,Cermet≈+260±50MPa and σres,WC-Co≈-350±70MPa was estimated in the corresponding layers. Microindentation cracks introduced in the cermet layers (the less toughness material) and propagated transversely to the layers were arrested at the interface, showing the combined effect of toughness and compressive stresses on crack shielding. © 2014 Elsevier Ltd.
URIhttp://hdl.handle.net/10261/97145
DOI10.1016/j.matdes.2014.01.076
Identifiersdoi: 10.1016/j.matdes.2014.01.076
issn: 0261-3069
Appears in Collections:(ICMS) Artículos
Files in This Item:
File Description SizeFormat 
Paper_Laminates_Accepted.pdf4,59 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.