Exploració per autor "Crespo Artiaga, Daniel"
Ara es mostren els items 46-65 de 99
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Identifying the high entropy characteristic in La-based metallic glasses
Zhang, LangTing; Duan, Yajuan; Crespo Artiaga, Daniel; Pineda Soler, Eloi; Wada, T.; Kato, Hidemi; Pelletier, J. M.; Qiao, Jichao (2021-08-05)
Article
Accés obertHigh temperature deformation was probed in a La-based high entropy metallic glass with an evident slow ß relaxation. The correlation between high configurational entropy and high temperature deformation mechanism was ... -
Inelastic deformation of metallic glasses under dynamic cyclic loading
Duan, Y.J.; Qiao, Jichao; Wada, T.; Kato, Hidemi; Wang, J. y.; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2021-03-15)
Article
Accés obertDynamic mechanical analysis was performed in two metallic glasses that show markedly distinct ß relaxation features. The confined flow defects of free-volume zones and the inelastic deformation behavior result into a ... -
Influence of carbon content on microstructure and properties of a steel matrix cermet
Alvaredo Olmos, Paula; Bruna Escuer, Pere; Crespo Artiaga, Daniel; Gordo Odériz, Elena (2018-09-01)
Article
Accés obertThere is a marked correlation between the composition, microstructure and properties in TiCN-based cermets. In the case of using iron alloys as metallic matrix the carbon content is of particular significance, as not only ... -
Influence of magnetic field heat treatment on the microstructures and coercivity in ferromagnetic amorphous alloys
Zhao, Chengliang; Bruna Escuer, Pere; Wang, Hao; He, Aina; Wang, Anding; Xie, Chenyang; Xie, Chunxiao; Sun, Zhen-zhong; Chang, Chuntao; Crespo Artiaga, Daniel; Inoue, Akihisha (Elsevier, 2022-11)
Article
Accés obertTo clarify the effect of small magnetic fields on the magnetic properties and microstructure in FeCoSiBPC amorphous alloys, a magnetic field with different directions and various intensities was applied. The results show ... -
Innovative NDT technique based on ferrofluids for detection of surface crack
Rojas Gregorio, José Ignacio; Cabrera, Blai; Musterni Girbau, Gerard; Nicolas, Jorge; Tristancho Martínez, Joshua; Crespo Artiaga, Daniel (2015-11)
Article
Accés obertAn innovative NDT technique is proposed for surface inspection of materials not necessarily magnetic or conductive, based on local magnetic field variations due to ferrofluid deposited in the cracks. The feasibility of the ... -
Innovative NDT technique for detection of surface cracks based on ferrofluids excited with DC and AC magnetic fields
Rojas Gregorio, José Ignacio; Cabrera, Blai; Musterni, Gerard; Nicolas, Jorge; Tristancho Martínez, Joshua; Crespo Artiaga, Daniel (2015-03-31)
Report de recerca
Accés obertAn innovative NDT technique is proposed for surface inspection of materials not necessarily magnetic or conductive, based on local magnetic field variations due to ferrofluid deposited in the cracks. The feasibility of the ... -
Intrinsic correlation between the fraction of liquidlike zones and the beta relaxation in high-entropy metallic glasses
Duan, Yajuan; Zhang, Langting; Qiao, J. C.; Wang, Yun-Jiang; Yang, Y.; Wada, T.; Kato, Hidemi; Pelletier, J. M.; Pineda Soler, Eloi; Crespo Artiaga, Daniel (American Institute of Physics (AIP), 2022-10-21)
Article
Accés obertLacking the structural information of crystalline solids, the origin of the relaxation dynamics of metallic glasses is unclear. Here, we report the evolution of stress relaxation of high-entropy metallic glasses with ... -
Investigation on repairs of aircraft composite structures made with various joining techniques
Pitta, Siddharth; Roure Fernández, Francisco; Crespo Artiaga, Daniel; Rojas Gregorio, José Ignacio (2018)
Comunicació de congrés
Accés restringit per política de l'editorialIn the race for developing aircraft with lighter airframe, aiming at increasing aircraft payload and/or fuel efficiency, the shift from conventional metal structures to light-weight composite structures has attracted ... -
Jun ware glaze colours: An X-ray absorption spectroscopy study
Yuan, Mingyue; Hou, Jiayu; Gorni, Giulio; Crespo Artiaga, Daniel; Li, Yuan; Pradell Cara, Trinitat (Elsevier, 2022-06)
Article
Accés obertJun ware is stoneware created in the late Northern Song dynasty (12th century) with a blue glaze combining transparent-blue and whitish-opaque submillimetric areas. The glaze has a glass nanostructure with lime-rich droplets ... -
Kinetics and crystallization path of a Fe-based metallic glass alloy
Duarte, Maria Jazmin; Kostka, Aleksander; Crespo Artiaga, Daniel; Jiménez Rodríguez, José Antonio; Dippel, A. C.; Renner, Frank U.; Dehm, G. (2017-04-01)
Article
Accés obertThe thermal stability and the quantification of the different transformation processes involved in the overall crystallization of the Fe50Cr15Mo14C15B6 amorphous alloy were investigated by several characterization techniques. ... -
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