Exploració per autor "Crespo Artiaga, Daniel"
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Link between shear modulus and enthalpy changes of Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 high entropy bulk metallic glass
Duan, Y.J.; Qiao, Jichao; Crespo Artiaga, Daniel; Goncharova, E.V.; Makarov, A.S.; Afonin, G.V.; Khonik, V.A. (2020-02-29)
Article
Accés obertMechanical and thermal properties of materials are intricately linked. Particularly, this fully applies to metallic glasses. In this work, we study shear modulus behavior and heat effects occurring upon heating up of ... -
Mechanical relaxation of metallic glasses: an overview of experimental data and theoretical models
Liu, Chaoren; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2015-06)
Article
Accés obertRelaxation phenomena in glasses are a subject of utmost interest, as they are deeply connected with their structure and dynamics. From a theoretical point of view, mechanical relaxation allows one to get insight into the ... -
Microstructural characterization & viscoelastic properties of AlZnMgCu alloys for aerospace applications
Rojas Gregorio, José Ignacio; Crespo Artiaga, Daniel (2010-07)
Proposta de tesi
Accés obertThe mechanical properties of materials (and particularly the viscoelastic properties) are intimately linked to their microstructure. Thereby, microstructural transformations are reflected on the viscoelastic behaviour. ... -
Microstructural characterization and kinetics modelization of vermicular cast irons.
Laneri, Karina; Bruna Escuer, Pere; Crespo Artiaga, Daniel (2007)
Article
Accés obertSeveral experimental techniques are used for phase identification and microstructure characterization of austempered vermicular cast irons (XRD, SEM, TEM and Mössbauer spectroscopy). Acicular structures were found to be ... -
Modeling of the effect of temperature, frequency, and phase transformations on the viscoelastic properties of AA 7075-T6 and AA 2024-T3 Aluminum Alloys
Rojas Gregorio, José Ignacio; Crespo Artiaga, Daniel (2012-12-01)
Article
Accés obertThe viscoelastic response of commercial aluminum alloys 7075-T6 and 2024-T3 as a function of temperature is presented. Experimental data are obtained with a dynamic-mechanical analyzer (DMA) at different loading frequencies ... -
Modeling of the Sub-Tg Relaxation Spectrum of Pd42.5Ni7.5Cu30P20 Metallic Glass
Liu, Chaoren; Pineda Soler, Eloi; Crespo Artiaga, Daniel; Qiao, Jichao (2016-03-17)
Article
Accés obertIn this work we study the mechanical relaxation spectrum of Pd42.5Ni7.5Cu30P20 metallic glass. The effect of aging on the relaxation behavior is analyzed by measuring the internal friction during consecutive heating runs. ... -
Nanoporous copper ribbons prepared by chemical dealloying of a melt-spun ZnCu alloy
Ibrahim, Sawsan; Dworzak, Alexandra; Crespo Artiaga, Daniel; Renner, Frank U.; Dosche, Carsten; Oezaslan, Mehtap (American Chemical Society (ACS), 2021-12-29)
Article
Accés restringit per política de l'editorialDealloying is a powerful and versatile method to fabricate three-dimensional nanoporous (np) materials with high surface area. In this work, we investigated the dealloying processes of Zn80Cu20 alloy ribbons in acidic and ... -
On the static strength of aluminium and carbon fibre aircraft lap joint repairs
Pitta, Siddharth; de la Mora Carles, Victor; Roure Fernández, Francisco; Crespo Artiaga, Daniel; Rojas Gregorio, José Ignacio (2018-10-01)
Article
Accés obertThe behaviour of various aircraft lap joint repair configurations is investigated experimentally and numerically under static loading. The lap joints consist of aluminium alloy (AA) 2024-T3 substrates repaired with twin ... -
On the validity of Avrami formalism in primary crystallization
Bruna Escuer, Pere; Crespo Artiaga, Daniel; González Cinca, Ricardo; Pineda Soler, Eloi (American Institute of Physics, 2006-09-30)
Article
Accés obertCalorimetric data of primary crystallization is usually interpreted in the framework of the Kolmogorov Dokl. Akad. Nauk SSSR 1, 355 1937 , Johnson and Mehl Trans. AIME 135, 416 1939 , and Avrami J. Chem. Phys. 7, ... -
Onset frequency of fatigue effects in pure aluminum and 7075 (AlZnMg) and 2024 (AlCuMg) alloys
Rojas Gregorio, José Ignacio; Crespo Artiaga, Daniel (2016-03)
Article
Accés obert -
Phase-field modeling of microstructural evolution in primary crystallization
Bruna Escuer, Pere; Pineda Soler, Eloi; Rojas Gregorio, José Ignacio; Crespo Artiaga, Daniel (2014)
Comunicació de congrés
Accés obert -
Phase-field modelling of microstructural evolution in primary crystallization
Bruna Escuer, Pere; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2007)
Article
Accés obertOne of the main routes to obtain nanostructured materials is through the primary crystallization of metallic glasses. In such transformations, crystallites with a different composition than the amorphous precursor grow with ... -
Phonon dispersion relation of metallic glasses
Crespo Artiaga, Daniel; Bruna Escuer, Pere; Vallés Sales, Araceli; Pineda Soler, Eloi (American Physical Society, 2016-10-13)
Article
Accés obertExperimental data on the phase sound speed of metallic glasses show anomalies in the terahertz range, reflecting an underlying complex behavior of their phonon dispersion spectrum not yet explained. We determine the phonon ... -
Physical aging effects on the dynamic relaxation behavior and mechanical properties of Cu46Zr46Al8 metallic glass
Qiao, Jichao; Feng, S. D.; Pelletier, J. M.; Crespo Artiaga, Daniel; Pineda Soler, Eloi; Yao, Yao (2017-12-05)
Article
Accés obertMechanical relaxation of glassy materials is strongly influenced by their mechanical and physical properties. In the current study, dynamic mechanical relaxation of Cu46Zr46Al8 metallic glass has been investigated by ... -
Plastic deformation induced anisotropy in metallic glasses: A molecular dynamics study
Velasco Cruz, Jorge Enrique; Concustell, Amadeu; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2017-06-15)
Article
Accés obertThe atomic structure of a Cu13Ni34Pd53 metallic glass was studied by molecular dynamics simulation at different temperatures along a shear deformation cycle. A simulation box of 1 million atoms was deformed in the x axis ... -
Polyamorphic transitions in Ce-based metallic glasses by synchrotron radiation
Duarte Correa, María Jazmín; Bruna Escuer, Pere; Pineda Soler, Eloi; Crespo Artiaga, Daniel; Garbarino, Gaston; Verbeni, Roberto; Zhao, Kun; Wang, Wei Hua; Romero Castro, Aldo Humberto; Serrano Gutiérrez, Jorge (2011-12-01)
Article
Accés obertWe report here on a polyamorphic-phase transition upon application of pressure on a Ce-based metallic glass, Ce70Al10Ni10Cu10, investigated by x-ray diffraction and inelastic x-ray scattering. This alloy is found to display ... -
Pràctiques de Fonaments físics
Crespo Artiaga, Daniel (Universitat Politècnica de Catalunya, 2009)
Pràctica
Accés obert -
Relaxation dynamics of Fe55Cr10Mo14C15B6 metallic glass explored by mechanical spectroscopy and calorimetry measurements
Liu, Chaoren; Madinehei, Seyed Milad; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2016-08-01)
Article
Accés obertIn this work, the mechanical relaxation dynamics of Fe55Cr10Mo14C15B6 metallic glass is explored by mechanical spectroscopy. The temperature-dependent loss modulus E″(T) shows the features of β relaxation well below glass ... -
Relaxation dynamics of metallic systems in the liquid/glass transition region
Liu, Chaoren; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2016)
Text en actes de congrés
Accés obert -
Relaxation of internal friction and shear viscosity in Zr57Nb5Al10Cu15.4Ni12.6 metallic glass
Duan, Y.J.; Qiao, Jichao; Crespo Artiaga, Daniel; Pelletier, J. M. (2020-09-01)
Article
Accés obertRelaxation of internal friction of Zr57Nb5Al10Cu15.4Ni12.6 metallic glass was investigated by mechanical spectroscopy. The stress relaxation of internal friction with different aging temperature was described by ...