Ara es mostren els items 108-127 de 177

    • Laser surface texturing of a WC-CoNi cemented carbide grade: surface topography design for honing application 

      Fang, Shiqi; Llanes Pitarch, Luis Miguel; Bähre, Dirk (2018-06)
      Article
      Accés obert
      Abrasive effectiveness of composite-like honing stones is related to the intrinsic surface topography resulting from the cubic boron nitride (CBN) grains protruding out of the metallic matrix. Within this framework, Laser ...
    • Laser surface texturing of PECM tools and the validation 

      Ernst, Andreas T.; Llanes Pitarch, Luis Miguel (Elsevier, 2020)
      Article
      Accés obert
      As a non-contact unconventional machining approach, Electrochemical Machining (ECM), it is widely used for the machining of modern high-strength materials in the automotive, aerospace, or medical industry. ECM is also ...
    • Mapping of mechanical properties at microstructural length scale in WC-Co cemented carbides: Assessment of hardness and elastic modulus by means of high speed massive nanoindentation and statistical analysis 

      Roa Rovira, Joan Josep; Phani, P. Sudharshan; Oliver, Warren C.; Llanes Pitarch, Luis Miguel (2018-09-01)
      Article
      Accés obert
      This paper studies the correlation between the microstructure and the mechanical properties at the nanometric length scale of individual WC grains as well as the metallic cobalt binder in cemented carbide systems. The ...
    • Materiales en ingeniería : problemas resueltos 

      Cabrera Marrero, José M.; Maspoch Rulduà, M. Lluïsa; Llanes Pitarch, Luis Miguel; Salán Ballesteros, Maria Núria (Edicions UPC, 2000)
      Llibre
      Accés restringit a la comunitat UPC
      En este libro se han planteado una serie de problemas complementarios al temario de la asignatura de Materiales, divididos en seis grandes apartados: 1. Estructura cristalina. 2. Propiedades físicas de los materiales. 3. ...
    • Measuring the fracture toughness of single WC grains of cemented carbides by means of microcantilever bending and micropillar splitting 

      Ortiz Membrado, Laia; Cuadrado Lafoz, Nuria; Casellas Padró, Daniel; Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (2021-08-01)
      Article
      Accés obert
      The main goal of this work is to obtain a reliable value of the fracture toughness of single grains of tungsten carbide (WC). It is attempted by testing microcantilever and micropillar samples shaped out, by means of focused ...
    • Mechanical behavior of PVD coatings deposited on ADI 

      Colombo, Diego Alejandro; Márquez, Adriana Beatriz; García Marro, Fernando; Llanes Pitarch, Luis Miguel; Sosa, Amadeo Daniel (2019-01-01)
      Article
      Accés obert
      In this work, the mechanical behavior of the coated ADI system is studied. For this purpose, single layer Ti and bilayer Ti/TiN and TiAl/TiAlN coatings, with different thicknesses, were deposited by the PVD technique of ...
    • Mechanical deformation of WC-Co composite micropillars under uniaxial compression 

      Tarragó Cifre, Jose María; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Keown, Eugene; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2016-07-27)
      Article
      Accés obert
      In this work, WC–Co micropillars machined by focused ion beam have been tested under uniaxial compression to investigate the stress–strain behavior and associated deformation mechanisms. The results indicate that yielding ...
    • Mechanical deformation of WC–Co composite micropillars under uniaxial compression 

      Tarragó Cifre, Jose María; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Keown, Eugene; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2015-07-17)
      Article
      Accés obert
      In thiswork,WC–Co micropillars machined by focused ion beamhave been tested under uniaxial compression to investigate the stress–strain behavior and associated deformation mechanisms. The results indicate that yielding ...
    • Mechanical integrity of PVD TiAlN-coated PcBN: Influence of substrate bias voltage and microstructural assemblage 

      Gordon Pozuelo, Sandra; Rodriguez Suarez, Teresa; Roa Rovira, Joan Josep; M'Saoubi, Rachid; Andersson, J. M.; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (Elsevier, 2023-12)
      Article
      Accés obert
      Polycrystalline cubic boron nitrides (PcBN) have been increasingly used together with PVD coatings, mainly for hard turning operations. Within this context, effectiveness of coated PcBN as cutting tool is usually addressed ...
    • Mechanical performance of AlCrSiN and AlTiSiN coatings on inconel and steel substrates after thermal treatments 

      Liang, Jing; Almandoz Sanchez, Eluxka; Ortiz Membrado, Laia; Rodríguez Trias, Rafael; Fernández de Ara, Jonathan; Fuentes, Gonzalo G.; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (Multidisciplinary Digital Publishing Institute (MDPI), 2022-12-01)
      Article
      Accés obert
      The objective of this study was to explore the mechanical properties of AlCrSiN and AlTiSiN coatings deposited on Inconel and steel substrates after thermal treatments of 500 °C and 800 °C. Nanoindentation was used to ...
    • Mechanical performance of AlCrSiN coating with Zr/Ta ion implantation on WC-Co hard metals 

      Liang, Jing; Ortiz Membrado, Laia; García González, S.; Orrit Prat, Jordi; Bonet, R.; Caro, J.; Fernández de Ara, J.; Almandoz, E.; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (Universitat Politècnica de Catalunya, 2022-06-15)
      Comunicació de congrés
      Accés obert
    • Mechanical properties of Al2O3 inverse opals by means of nanoindentation 

      Roa Rovira, Joan Josep; Coll Valentí, Arnau; Bermejo, Sandra; Jiménez Piqué, Emilio; Alcubilla González, Ramón; Castañer Muñoz, Luis María; Llanes Pitarch, Luis Miguel (2016)
      Article
      Accés obert
      In order to understand the mechanical behaviour of Al2O3 inverse opals, nanoindentation techniques have been implemented in material layers with three different microstructures, in terms of hollow or polystyrene spheres, ...
    • Mechanical response under contact loads of AlCrN-coated tool materials 

      Yang, Jing; Botero Vega, Carlos Alberto; Cornu, Nicolas; Ramírez Sandoval, Giselle; Mestra Rodríguez, Álvaro Miguel; Llanes Pitarch, Luis Miguel (Institute Of Physics Publishing Ltd, 2014)
      Text en actes de congrés
      Accés obert
      The mechanical behavior under contact loading of systems consisting of PVD AlCrN film deposited onto two distinct hard substrates - cemented carbides and tool steel is studied by means of indentation testing techniques, ...
    • Mechanical strength of ground WC-Co cemented carbides after coating deposition 

      Yang, Jing; Odén, Magnus; Johansson-Jõesaar, M.P.; Esteve Pujol, Joan; Llanes Pitarch, Luis Miguel (2017-03-24)
      Article
      Accés obert
      Manufacturing of hardmetal tools often involves surface grinding, ion etching and final coating. Each stage throughout the manufacturing chain introduces surface integrity changes which may be critical for defining the ...
    • Mechanics and mechanisms of fatigue in a WC-Ni hardmetal and a comparative study with respect to WC-Co hardmetals 

      Tarragó Cifre, Jose María; Ferrari, Claudio; Reig, Begoña; Coureaux Mustelier, David; Schneider, Ludwig; Llanes Pitarch, Luis Miguel (2015-01-01)
      Article
      Accés obert
      There is a major interest in replacing cobalt binder in hardmetals (cemented carbides) aiming for materials with similar or even improved properties at a lower price. Nickel is one of the materials most commonly used as a ...
    • Micromecanismos de daño sub-superficiales inducidos por indentación esférica en aceros herramientas recubiertos 

      Ramírez Sandoval, Giselle; Jiménez Piqué, Emilio; Mestra Rodríguez, Álvaro Miguel; Vilaseca, Montse; Casellas Padró, Daniel; Llanes Pitarch, Luis Miguel (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
    • Micromechanical investigations of CVD coated WC-Co cemented carbide by micropillar compression 

      El Azhari, Idriss; García, José Luis; Zamanzade, Mohammad; Soldera, Flavio; Pauly, Christoph; Motz, Christian; Llanes Pitarch, Luis Miguel; Mücklich, Frank T. (Elsevier, 2020-01-15)
      Article
      Accés obert
      Deformation behavior of an industrial coated cemented carbide (WC-Co substrate coated with CVD multilayer of TiN/Zr(C,N)/Ti(C,N,O)/Al2O3) was investigated by means of micropillar compression method. In addition to the WC-Co ...
    • Micromechanical mapping of high entropy carbide based hardmetals 

      Cabezas i Peñalva, Laura; Vornberger, Anne; Jiménez Piqué, Emilio; Pötschke, Johannes; Llanes Pitarch, Luis Miguel (2023)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      High Entropy Alloys (HEA) are materials consisting of a mixture of five or more elements in equal or relatively large proportions. They are a promising alternative material due to their desirable properties such as good ...
    • Micromechanical mapping of polycrystalline cubic boron nitride composites by means of high-speed nanoindentation: Assessment of microstructural assemblage effects 

      Gordon Pozuelo, Sandra; Besharatloo, Hossein; Wheeler, Jeffrey; Rodriguez Suarez, Teresa; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (Elsevier, 2022-08-28)
      Article
      Accés obert
      Polycrystalline cubic boron nitrides (PcBNs) are composites widely used as cutting tool materials due to their exceptional high hardness and wear resistance. Investigation of their micromechanical properties is key for ...
    • Micromechanical properties of WC-(W,Ti,Ta,Nb)C-Co composites 

      Sandoval, Daniela A.; Roa Rovira, Joan Josep; Ther, O; Tarrés, E.; Llanes Pitarch, Luis Miguel (2019-03-10)
      Article
      Accés obert
      A deep knowledge of micromechanical properties of each constitutive phase of cemented carbides is crucial to improve their performance on the basis of microstructural design optimization. In the present work, a systematic ...