Browsing by Subject "Alloys"
Now showing items 1-20 of 31
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A phenomenological model for the solidification of eutectic and hypoeutectic alloys including recalescence and undercooling
(2018-05)
Article
Open AccessIn this work, a novel phenomenological model is proposed to study the liquid-to-solid phase change of eutectic and hypoeutectic alloy compositions. The objective is to enhance the prediction capabilities of the solidification ... -
Analysis of the mechanical relaxations of 6061 and 6082 (Al–Mg–Si) alloys by using the time-temperature superposition principle
(2017)
Conference report
Restricted access - publisher's policyThe viscoelastic response of commercial 6061 and 6082 (Al–Mg–Si) alloys was measured with a dynamic-mechanical analyzer (DMA) as a function of both the temperature (in the range 30 to 425ºC) and the loading frequency (in ... -
Can surface modification enhance the mechanical properties through microstructural changes of magnesium alloys?
(Universitat Politècnica de Catalunya, 2021-02-12)
Master thesis
Open AccessEl objectivo principal de este trabajo final de máster (TFM) consiste en estudiar el efecto de la modificación microestructural, así como la directa modificación de las propiedades mecánicas bajo diferentes campos de ... -
Caracterització electroquímica d'aliatges "High-Entropy"
(Universitat Politècnica de Catalunya, 2020-10-22)
Bachelor thesis
Open AccessEn aquest treball s’han produït una sèrie de composicions d’uns aliatges anomenats high-entropy metallic glasses. Aquest tipus d’aliatges són una combinació d’aliatges high-entropy, creats a partir de la fusió a alta ... -
Caracterización de la microestructura de una aleación de Ti libre de Ni con memoria de forma y bajo módulo para aplicaciones biomédicas ante diferentes velocidades de enfriamiento
(Universitat Politècnica de Catalunya, 2010-06-17)
Master thesis (pre-Bologna period)
Open AccessEn aquest projecte s’ha caracteritzat una aleació de titani sense níquel disenyada per tenir un baix mòdul elàstic i/o memòria de forma, destinada a ser utilitzada per la creació d’implants biomèdics. La aleació va ser ... -
Caracterización y optimización de aleaciones de Ti libres de Ni con bajo módulo elástico y/o memoria de forma
(Universitat Politècnica de Catalunya, 2009-04)
Master thesis (pre-Bologna period)
Open AccessCon el propósito de obtener una aleación de Ti libre de Ni que posea bajo módulo elástico y/o memoria de forma, el presente trabajo tiene como objetivo la caracterización y optimización de dos aleaciones del sistema ... -
Characterization of high-entropy alloys: study of the addition of aluminum to the high entropy system HfMoTaTi+Al
(Universitat Politècnica de Catalunya, 2018-01)
Bachelor thesis
Open AccessHigh Entropy Alloys (HEA) are alloy systems that are formed with five or more principal elements of alloy or have an entropy of mixture higher than 1.5R. Although at first it may seem like if it is extrapolated from binary ... -
Contact damage and fracture micromechanism of multilayered TiN/CrN coatings at micro- and nano-length scales
(2014)
Article
Restricted access - publisher's policyIn this study, systematic nanomechanical andmicromechanical studies have been conducted in threemultilayer TiN/CrN systems with different bilayer periods (8, 19 and 25 nm). Additionally, experimental work has been ... -
Degradation of azo dyes by rapidly solidified metallic particles
(2015)
Conference lecture
Open AccessAzo compounds are one of the most common families of dyes used in textile and leather treatments. An important step during the treatment of water polluted by these compounds, is the degradation of the compounds by ... -
Efecto de los elementos microaleantes en las aleaciones de aluminio para fundición
(Universitat Politècnica de Catalunya, 2019-06)
Bachelor thesis
Restricted access - author's decision
Covenantee: Bostlan / Aleastur / CIE Automotive. Componentes Vilanova[CASTELLÀ] El objetivo principal de este trabajo es realizar un estudio de los diferentes elementos de aleación añadidos al AlSi9Cu3, proporcionado por CIE Componentes VIlanova, también denominado EN AC 46500. Estos elementos ... -
Effect of TiO 2 nanoshape on the photoproduction of hydrogen from water-ethanol mixtures over Au 3 Cu/TiO 2 prepared with preformed Au-Cu alloy nanoparticles
(2019-07-05)
Article
Open AccessA series of TiO2 nanoshapes (microurchins, nanobelts, nanowires, microrods and nanotubes) were prepared and decorated with preformed nanoparticles of Au-Cu alloy (Au:Cu¿=¿3:1 molar, 1¿wt.% metal content). The resulting ... -
Equal channel angular pressing of Cu-Al bimetallic rods
(2012)
Article
Restricted access - publisher's policyCoextrusion and corolling are the major processes to produce bimetallic rods, tubes and wires, the objective being to perform clad metals, bimetallic joints or seals. The aim of the present work is to produce bimetallic ... -
Estudi de l'anoditzat d'alumini: A6061/AI203/26p T6, A359/SiC/20p T6 i A356 (New-Rheocasting)
(Universitat Politècnica de Catalunya, 2007-07-16)
Master thesis (pre-Bologna period)
Open AccessEn aquest projecte es pretén l’estudi de la capa d’anoditzat d’alumini amb tres materials bases diferents. A6061/Al2o3/26p T6 conformat per forja, A359/SiC/20p T6 conformat per fundició i A356 conformat en estat semi-sólid pel ... -
Estudi de l'efecte de l'anisotropia sobre el comportament electroplàstic d'aliatges d'alumini
(Universitat Politècnica de Catalunya, 2016-04-26)
Bachelor thesis
Open AccessEn aquest treball s’ha investigat si el fenomen de la electroplasticitat en provetes de microtracció es veu afectat per la influència de la direcció de laminació del material i la velocitat d’assaig durant la tracció. El ... -
Estudio del efecto de la modificación con estroncio en la microestructura y las propiedades mecánicas de aleaciones Al-Si-Mg
(Universitat Politècnica de Catalunya, 2020-07-14)
Master thesis
Open AccessUn dels principals defectes que apareixen en els aliatges d'alumini obtinguts per fosa són els causats per la porositat. En aquest treball s’ha analitzat un aliatge Al-Si-Mg utilitzat per la fabricació de connectors d'alta ... -
How relevant are molecular electronic parameters for predicting corrosion inhibition efficiency: imidazoles as corrosion inhibitors of Cu/Zr materials in NaCl solution
(2021-12-01)
Article
Restricted access - publisher's policyCorrelations between corrosion inhibition efficiencies and DFT calculated molecular parameters are critically evaluated for nine imidazole-based compounds on eight Cu/Zr materials in 3 wt% NaCl solution. To this end, 31 ... -
Improvement of the prototype machine to obtain light alloys in semi-solid state
(Universitat Politècnica de Catalunya, 2018-06-11)
Bachelor thesis
Restricted access - author's decisionWhen casting metals, many aspects must be controlled to produce a metal alloy that has the optimum physical qualities possible. One such way of improving these physical properties is casting alloys in a semi-solid state. ... -
Magnetic properties, martensitic and magnetostructural transformations of ferromagnetic Ni-Mn-Sn-Cu shape memory alloys
(2020-04-03)
Article
Open AccessThe influence of Cu doping on structural and magnetic properties of Ni50-xMn36Sn14- yCux, y (x=0, 1,2 and y=1 at. %) ribbons has been investigated. The crystalline structures of the alloys were resolute by X-ray diffraction ... -
Microstructural analysis of a partially recrystallized nickel-based superalloy undergoing delta-processing
(2022-06-25)
Article
Restricted access - publisher's policyLarge volume fractions of stable d-phase in nickel-based superalloys, such as in Inconel 718 (IN718), are being avoided in the forging industry because of their deleterious effect in causing brittleness. However, it has ... -
Microstructural effects of strain aging on NiTi pseudoelastic wires by synchrotron X-ray micro-diffraction
(2015)
Conference lecture
Open AccessIn this work, we explore the consequences of strain aging NiTi wires (2.46 mm diameter) at moderate temperatures (100ºC). The changes of the stress-strain behaviour on aged, as compared with non-aged wires, with comparatively ...
