Exploració per autor "Llanes Pitarch, Luis Miguel"
Ara es mostren els items 148-167 de 177
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R-Curve approach to describe the fracture resistance of tool steels
Picas Anfruns, Ingrid; Casellas Padró, Daniel; Llanes Pitarch, Luis Miguel (2016-06)
Article
Accés obertThis work addresses the events involved in the fracture of tool steels, aiming to understand the effect of primary carbides, inclusions, and the metallic matrix on their effective fracture toughness and strength. ... -
Residual strength of WC-Co cemented carbides after being subjected to abrupt temperature changes
Tarragó Cifre, Jose María; Serra, Ignacio; Al-Dawery, Ihsan; Llanes Pitarch, Luis Miguel (2014)
Text en actes de congrés
Accés obertThermal shock and thermal fatigue are recognized as common failure modes for WC - Co cemented carbides (hardmetals) in several applications in volving service temperature changes. However, information on microst ... -
Resistencia mecánica de carburos cementados: influencia de la temperatura y la microestructura
Moyano, I; Bermejo, Raul; Salán Ballesteros, Maria Núria; Chicardi, E; Gotor Martínez, Francisco José; Llanes Pitarch, Luis Miguel; Torres Hernández, Yadir (2015-04)
Article
Accés obertEn esta investigación se ha evaluado el efecto de la temperatura en la resistencia mecánica de carburos cementados (WC-Co) con diferente camino libre medio de la fase ligante. La misma se determinó a 600°C con discos ... -
Robocasting of dense 8Y zirconia parts: Rheology, printing, and mechanical properties
Zhang, Junhui; Yarahmadi, Mona; Cabezas i Peñalva, Laura; Serra Fanals, Marc; Elizalde Huitrón, Sergio Alberto; Cabrera Marrero, José M.; Llanes Pitarch, Luis Miguel; Fargas Ribas, Gemma (Elsevier, 2023-07-08)
Article
Accés obertAdvanced ceramics with complex geometry have become indispensable in engineering applications. Due to limitations of traditional ceramic fabrication processes, additive manufacturing represents a revolution for shaping and ... -
Scale effect in mechanical characterization of WC-Co composites
Sandoval Ravotti, Daniela Andreina; Rinaldi, Antonio; Tarragó, José María; Roa Rovira, Joan Josep; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2018-04-01)
Article
Accés obert© 2017 Elsevier LtdThe study of mechanical response of materials at small length scales has gained importance due to the recent advances in micro- and nano-fabrication as well as testing systems. However, most of the ... -
Small scale fracture behaviour of multilayer TiN/CrN systems: Assessment of bilayer thickness effects by means of ex-situ tests on FIB-milled micro-cantilevers
Roa Rovira, Joan Josep; Rodríguez, R.; Lamelas, Victor; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel; Martínez, R. (Elsevier, 2016-12-25)
Article
Accés obertTiN/CrN multilayered PVD coatings are known to exhibit outstanding micromechanical properties and wear resistance. On the other hand, information on their small scale fracture behaviour is rather scarce. The present work ... -
Small scale mechanical response of WC-Co cemented carbides
Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Sandoval, Daniela A.; Tarrago, Jose María; Fair, Jonathan; Tarrés, E.; Llanes Pitarch, Luis Miguel (2017)
Text en actes de congrés
Accés restringit per política de l'editorialIn recent years, many efforts have been invested to determine the intrinsic mechanical properties for each constitutive phase of composite materials. The outstanding behaviour of WC-Co composites is mainly attributed to ... -
Small-scale assessment of corrosion-induced damage in hardmetals
Zheng, Yafeng; Fargas Ribas, Gemma; Besharatloo, Hossein; Roa Rovira, Joan Josep; Lavigne, Olivier; Llanes Pitarch, Luis Miguel (2019)
Text en actes de congrés
Accés obertIn this work, the effect of corrosion-induced damage on the mechanical response of hardmetals was evaluated at small-scale level by means of nanoindentation and nanoscratch. Damage was introduced in a controlled way through ... -
Small-scale mechanical properties of constitutive phases within a polycrystalline cubic boron nitride composite
Besharatloo, Hossein; Gordon Pozuelo, Sandra; Rodríguez Suárez, Teresa; Llanes Pitarch, Luis Miguel; Roa Rovira, Joan Josep (Elsevier, 2019-01-01)
Article
Accés obertMicromechanical properties of a polycrystalline cubic boron nitride (PcBN) composite have been assessed by statistical analysis of data gathered from experimental massive nanoindentation. The mechanical study was complemented ... -
Spherical indentation of polycrystalline cubic boron nitride (PcBN): contact damage evolution with increasing load and microstructural effects
Gordon Pozuelo, Sandra; García Marro, Fernando; Rodríguez Suárez, Teresa; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (Elsevier, 2023-02)
Article
Accés obertThe extremely severe conditions at which cutting tools are exposed in hard machining operations require tool materials with outstanding mechanical properties. Excellent combinations of high hardness and fracture toughness ... -
Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
Tarragó Cifre, Jose María; Coureaux Mustelier, David; Torres Hernández, Yadir; Jiménez Piqué, Emilio; Schneider, Ludwig; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2018-02)
Article
Accés obertStrength and reliability of WC-Co cemented carbides (hardmetals) are dependent on effective fracture toughness as well as on nature, size and distribution of processing flaws. Regarding toughness, they exhibit a crack ... -
Strength degradation of cemented carbides due to thermal shock
Tarragó Cifre, Jose María; Dorvlo, Selassie; Al-Dawery, Ihsan; Llanes Pitarch, Luis Miguel (2015)
Comunicació de congrés
Accés obertDespite the recognition of thermal shock and thermal fatigue as common failure modes in cemented carbide applications, the information on the influence of the microstructure on the resistance of hardmetals to abrupt ... -
Strengthening zones in the Co matrix of WC-Co cemented carbides
Konyashin, Igor Yu; Lachmann, Frank Friedrich; Ries, Bernd Heinrich; Mazilkin, Andrei A.; Straumal, Boris B.; Kübel, Christian; Llanes Pitarch, Luis Miguel; Baretzky, Brigitte (2014-07-15)
Article
Accés restringit per política de l'editorialFor conventional structural and tool materials, in particular WC-Co cemented carbides, hardness and wear-resistance can usually be increased only at the expense of toughness and strength. For the first time we have achieved ... -
Substrate surface finish effects on scratch resistance and failure mechanisms of TiN-coated hardmetals
Yang, Jing; Roa Rovira, Joan Josep; Odén, Magnus; Johansson Joesaar, M.P; Esteve, Joan; Llanes Pitarch, Luis Miguel (Elsevier, 2015-03-15)
Article
Accés obertIn this study, the influence of substrate surface finish on scratch resistance and associated failure mechanisms is investigated in the case of a TiN-coated hardmetal. Three different surface finish conditions are studied: ... -
Surface integrity assessment of laser treated and subsequently coated cemented carbides
Fang, Shiqi; García Marro, Fernando; Salán Ballesteros, Maria Núria; Cruz, Marlon; Colominas Guardia, Carles; Baehre, Dirk; Llanes Pitarch, Luis Miguel (2019)
Article
Accés obertCemented carbides, referred to as hardmetals, are forefront engineering materials widely implemented in industry for chip-removal cutting tools and supporting parts. As a newly developed technology for surface modification ... -
Surface integrity of new dry-electropolishing technology on WC-Co cemented carbides
Riu Perdrix, Guiomar; Weil, Dominik; Llanes Pitarch, Luis Miguel; Johanns, Kurt; Oliver, Warren C.; Roa Rovira, Joan Josep (Elsevier, 2022)
Article
Accés obertThis study is focused on WC-Co dry-electropolished by DryLyte® technology that allows to obtain corrosion-free surfaces with a roughness below 9 nm. The main goal behind this research is to investigate the surface integrity ... -
Surface modification approaches for enhancing fracture and fatigue resistance of electrical discharge machined hardmetals
Llanes Pitarch, Luis Miguel; Casas, B.; Torres, Yadir; Anglada Gomila, Marcos Juan (2010)
Text en actes de congrés
Accés restringit per política de l'editorialElectrical discharge machining (EDM) provides an effective means of shaping hardmetals. However, it is also known that surface integrity of these materials may be affected by EDM, degrading their tribomechanical characteristics. ... -
Surface patterning of cemented carbides by means of nanosecond laser
Fang, Shiqi; Pérez, Víctor; Salán Ballesteros, Maria Núria; Baehre, Dirk; Llanes Pitarch, Luis Miguel (2020)
Article
Accés obertA nanosecond laser combined with a two-axis reflection control unit is used to shape polygonal pyramids with defined geometry on a specific cemented carbide grade. In total, 12 different surface patterns have been fabricated, ... -
Surface topography quantification of super hard abrasive tools by laser scanning microscopy
Fang, Shiqi; Llanes Pitarch, Luis Miguel; Engstler, M.; Baehre, D.; Soldera, Flavio; Muecklich, F. (2016)
Article
Accés obertNon-conventional super hard abrasive tools are made of composite materials containing super hard grains, e.g., diamond or cubic boron nitride (CBN) grains, bound by a metallic constitutive phase. These tools are usually ... -
Testing length-scale considerations in mechanical characterization of WC-Co hardmetal produced via binder jetting 3D printing
Cabezas i Peñalva, Laura; Berger, Christian; Jiménez Piqué, Emilio; Pötschke, Johannes; Llanes Pitarch, Luis Miguel (2023-02-01)
Article
Accés obertThe extreme versatility of additive manufacturing (AM) as processing technology results in “AMed pieces” with intrinsic characteristics linked to the shaping route followed, which are also key for defining mechanical ...