Now showing items 21-40 of 61

  • Effect of shot peening on metastable austenitic stainless steels 

    Fargas Ribas, Gemma; Roa Rovira, Joan Josep; Mateo García, Antonio Manuel (2015-08-12)
    Article
    Open Access
    In this work, shot peening was performed in a metastable austenitic stainless steel EN 1.4318 (AISI 301LN) in order to evaluate its effect on austenite to martensite phase transformation and also the influence on the fatigue ...
  • Effect of thermal treatments on the wear behaviour of duplex stainless steels 

    Fargas Ribas, Gemma; Mestra Rodríguez, Álvaro Miguel; Anglada Gomila, Marcos Juan; Mateo García, Antonio Manuel (2009-11-04)
    Article
    Restricted access - publisher's policy
    Duplex stainless steel (DSS) is a family of steels characterized by two-phase microstructure with similar percentages of ferrite (α) and austenite (y).Their attractive combination of mechanical properties and corrosion ...
  • Empirical expression for the prediction of penetration in butt joints for duplex stainless steel SAF 2205 

    Dorta Almenara, Minerva; Vidal, Jorge; Mateo García, Antonio Manuel; Fargas Ribas, Gemma; Camejo, Franklin (2011-10)
    Article
    Open Access
    La presente investigación muestra dos modelos empíricos que permiten predecir la geometría del cordón de soldadura a tope de un acero inoxidable dúplex tipo 2205. Para obtener dichos modelos se empleó una metodología que ...
  • Estudio del efecto del límite de grano en los mecanismos de deformación de los aceros TRIP mediante compresión de micropilares 

    Roa Rovira, Joan Josep; Wheeler, J.M.; Fargas Ribas, Gemma; Mateo García, Antonio Manuel (2017)
    Conference lecture
    Restricted access - publisher's policy
    Los aceros TRIP (Transformation-Induced Plasticity) se caracterizan por presentar transformación de fase de austenita a martensita por deformación, hecho que les confiere una mayor capacidad de endurecimiento que los aceros ...
  • Evaluación mecánica mediante técnicas de indentación de soldaduras por fricción lineal en aleaciones de titanio 

    Corzo Rueda, M. Clemencia; Casals, O.; Alcalá Cabrelles, Jorge; Mateo García, Antonio Manuel; Anglada Gomila, Marcos Juan (2005-11)
    Article
    Open Access
    Este artículo presenta los resultados de un proyecto cuyo objetivo es evaluar la integridad estructural de soldaduras por fricción lineal entre diferentes aleaciones de titanio de aplicación aeronáutica. Concretamente se ...
  • Evaluation of the bulk and alpha-case layer properties in Ti-6Al-4V at micro- and nano-metric length scale 

    Sefer, Birhan; Roa Rovira, Joan Josep; Mateo García, Antonio Manuel; PEDERSON, R; Antti, Marta-Lena (WILEY, 2016)
    Part of book or chapter of book
    Restricted access - publisher's policy
    In the present study the hardness of individual alpha ( )-Ti grains in Ti-6Al-4V was measured by nanoindentation using Berkovich tip indenter. Additionally, alpha-case layer was induced by performing isothermal heat ...
  • Fatiga isotérmica de aceros para herramientas de trabajo en caliente 

    Mateo García, Antonio Manuel; Llanes Pitarch, Luis Miguel; Casas, B.; Mir, J.; Molas, S. (2011-06-20)
    Article
    Open Access
    El trabajo reportado en este artículo forma parte de un proyecto de investigación en el cual se tratan de desarrollar aceros de herramientas para conformado en caliente con prestaciones optimizadas. Para ello se comenzó ...
  • Fatiga isotérmica de aceros para herramientas de trabajo en caliente 

    Mateo García, Antonio Manuel; Casas, B.; Mir Carbonell, Jordi; Molas, S.; Llanes Pitarch, Luis Miguel (2010)
    Conference report
    Restricted access - publisher's policy
    El trabajo reportado en este artículo forma parte de un proyecto de investigación en el cual se tratan de desarrollar aceros de herramientas para conformado en caliente con prestaciones optimizadas. Para ello se comenzó ...
  • Fatigue crack growth behavior of WC-Co and WC-CoNi cemented carbides 

    Tarragó Cifre, Jose María; Roa Rovira, Joan Josep; Valle, Vladimir; Jessica, Marshall; Mateo García, Antonio Manuel; Llanes Pitarch, Luis Miguel (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
    Conference report
    Open Access
    En este trabajo se investigó el crecimiento de grietas por fatiga para diversas calidades de metal duro en función de la microestructura y el cociente de carga aplicada (R). De esta forma, se evaluó la influencia de la ...
  • Fatigue crack growth of a metastable austenitic stainless steel 

    Martelo, D.F.; Mateo García, Antonio Manuel; Chapetti, M.D. (2015-11-01)
    Article
    Open Access
    The fatigue crack growth behavior of an austenitic metastable stainless steel AISI 301LN in the Paris region is investigated in this work. The fatigue crack growth rate curves are evaluated in terms of different parameters ...
  • Fatigue propagation of long cracks in metastable austenitic stainless steels 

    Martelo, D.F.; Mateo García, Antonio Manuel; Fargas Ribas, Gemma; Chapetti, M.D. (2013)
    Conference report
    Open Access
    Fatigue crack growth of a metastable austenitic stainless steel was investigated in thin specimen under positive stress ratio. Annealed and Co l d rolled conditions were used to test the influence of the microstructure. ...
  • Fractura de materiales 

    Alcalá Cabrelles, Jorge; Llanes Pitarch, Luis Miguel; Mateo García, Antonio Manuel; Salán Ballesteros, Maria Núria (Edicions UPC, 2002)
    Book
    Restricted access to the UPC academic community
    Todos los componentes de aplicación en ingeniería están sometidos, en mayor o menor grado, a procesos de fatiga y fractura. La fractura de los materiales es un fenómeno que comenzó a cobrar importancia a partir de la ...
  • Hall-Petch strengthening of the constrained metallic binder in WC-Co cemented carbides: Experimental assessment by means of massive nanoindentation and statistical analysis 

    Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Salla Tarragó, José María; Mateo García, Antonio Manuel; Sandoval, Daniela A.; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2016-10-31)
    Article
    Open Access
    WC–Co cemented carbides are geometrically complex composites constituted for two interpenetrating networks of the constitutive ceramic and metal phases. Accordingly, assessment of microstructural effects on the local ...
  • High Cycle Fatigue of Metastable Austenitic Stainless Steels 

    Fargas Ribas, Gemma; Zapata Dederle, Ana Cristina; Anglada Gomila, Marcos Juan; Mateo García, Antonio Manuel (IOP PUBLISHING LTD., 2009-11-04)
    Article
    Restricted access - publisher's policy
    Metastable austenitic stainless steels are currently used in applications where severe forming operations are required, such as automotive bodies, due to its excellent ductility. They are also gaining interest for its ...
  • Improvement of mechanical properties on metastable stainless steels by reversion heat treatments 

    Mateo García, Antonio Manuel; Zapata, A.; Fargas Ribas, Gemma (IOP Publishing. Institute of Physics, 2013-03-21)
    Article
    Open Access
    AISI 301LN is a metastable austenitic stainless steel that offers an excellent combination of high strength and ductility. This stainless grade is currently used in applications where severe forming operations are required, ...
  • Influence of cyclic thermal treatments on the oxidation behavior of Ti-6Al- 2Sn-4Zr-2Mo alloy 

    Fargas Ribas, Gemma; Roa Rovira, Joan Josep; Sefer, B.; Mateo García, Antonio Manuel (2018-11-01)
    Article
    Restricted access - publisher's policy
    Ti-6Al-2Sn-4Zr-2Mo is one of the most common titanium alloys for aerospace industry. This alloy experiences oxidation phenomenon at elevated temperatures. In the present study, cyclic thermal treatments were performed in ...
  • Influence of cyclic thermal treatments on the oxidation behavior of Ti-6Al-2Sn-4Zr-2Mo alloy 

    Fargas Ribas, Gemma; Roa Rovira, Joan Josep; Sefer, Birhan; Mateo García, Antonio Manuel (2018-11-01)
    Article
    Restricted access - publisher's policy
    Ti-6Al-2Sn-4Zr-2Mo is one of the most common titanium alloys for aerospace industry. This alloy experiences oxidation phenomenon at elevated temperatures. In the present study, cyclic thermal treatments were performed in ...
  • Influence of laser cutting on the fatigue limit of two high strenght steels 

    Mateo García, Antonio Manuel; Fargas Ribas, Gemma; Calvo Muñoz, Jessica; Roa Rovira, Joan Josep (2015-03-05)
    Article
    Open Access
    Laser cutting is widely used in the metal industry, particularly when components of high strength steel sheets are produced. However, the roughness of cut edges produced by laser differs from that obtained by other methods, ...
  • INFLUENCE OF LASER CUTTING ON THE FATIGUE LIMIT OF TWO HIGH STRENGTH STEELS 

    Mateo García, Antonio Manuel; Fargas Ribas, Gemma; Calvo Muñoz, Jessica; Roa Rovira, Joan Josep (2013)
    Conference report
    Open Access
    Laser cutting is widely used in the metal industry, particularly when components of high strength steels sheets are produced. On the other hand, the roughness of cut - edges produced by laser differs from that obt ained ...
  • Influence of pre-existing martensite on the wear resistance of metastable austenitic stainless steels 

    Fargas Ribas, Gemma; Roa Rovira, Joan Josep; Mateo García, Antonio Manuel (2016)
    Article
    Open Access
    The effect of pre-existing martensite on the sliding wear behavior of a commercial metastable austenitic stainless steel was investigated. Two different steel conditions were considered: annealed (with a fully austenitic ...