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Intrinsic hardness of constitutive phases in WC–Co composites:Nanoindentation testing, statistical analysis, WC crystal orientation effectsand flow stress for the constrained metallic binder

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Intrinsic hardness WC-Co, J Eur Ceram Soc, 2015.pdf (2,166Mb)
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10.1016/j.jeurceramsoc.2015.04.021
 
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Roa Rovira, Joan JosepMés informacióMés informació
Jiménez Piqué, EmilioMés informacióMés informacióMés informació
Verge, C.
Tarrago, J.M.
Mateo García, Antonio ManuelMés informacióMés informacióMés informació
Fair, Jonathan
Llanes Pitarch, Luis MiguelMés informacióMés informacióMés informació
Document typeArticle
Defense date2015-11-03
PublisherElsevier
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
The intrinsic hardness of the constitutive phases in WC–Co composites is investigated by combining experimental and statistical analysis nanoindentation techniques. It is done on the basis of considering the cemented carbide material as effectively heterogeneous at the microstructure scale, i.e. consisting of three phases defined by either different chemical nature (carbides and binder) or distinct carbide crystal orientation (i.e. with surface normal perpendicular to either basal or prismatic planes). As main outcome, experimentally measured and statistically significant intrinsic hardness values for the defined phases (WC and constrained metallic binder) are analyzed and determined. Besides the evidence of crystal anisotropy for the WC phase, they permit to identify and account the expected strengthening of the plastic-constrained metallic binder, a critical input parameter for hardness and toughness modelling as well as for microstructural design optimization of ceramic composites reinforced by ductile metallic ligaments
CitationRoa, J.J., Jimenez-Pique, E., Verge, C., Tarrago, J., Mateo, A., Fair, J., Llanes, L. Intrinsic hardness of constitutive phases in WC–Co composites:Nanoindentation testing, statistical analysis, WC crystal orientation effectsand flow stress for the constrained metallic binder. "Journal of the european ceramic society", 03 Novembre 2015, vol. 35, núm. 13, p. 3419-3425. 
URIhttp://hdl.handle.net/2117/84037
DOI10.1016/j.jeurceramsoc.2015.04.021
ISSN0955-2219
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0955221915001843
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  • Departament de Ciència dels Materials i Enginyeria Metal·lúrgica - Articles de revista [961]
  • CIEFMA - Centre d'Integritat Estructural, Fiabilitat i Micromecànica dels Materials - Articles de revista [283]
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