Search Results - "Prado, T. M."

Origin of the twinning to slip transition with grain size refinement, with decreasing strain rate and with increasing temperature in magnesium by Cepeda-Jiménez, C.M., Molina-Aldareguia, J.M., Pérez-Prado, M.T.

“…The aim of this paper is to elucidate the origin of the transition from twinning to slip dominated flow in pure Mg. With that purpose, two polycrystals with…”
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Measuring the critical resolved shear stresses in Mg alloys by instrumented nanoindentation by Sánchez-Martín, R., Pérez-Prado, M.T., Segurado, J., Bohlen, J., Gutiérrez-Urrutia, I., Llorca, J., Molina-Aldareguia, J.M.

“…One of the main limiting factors in the development of new magnesium (Mg) alloys with enhanced mechanical behavior is the need to use vast experimental…”
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Effect of grain size on slip activity in pure magnesium polycrystals by Cepeda-Jiménez, C.M., Molina-Aldareguia, J.M., Pérez-Prado, M.T.

“…The aim of this work is to investigate the effect of grain size on slip activity, a critical issue for materials design that remains unsolved. Three pure…”
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Machine learning dislocation density correlations and solute effects in Mg-based alloys by Salmenjoki, H., Papanikolaou, S., Shi, D., Tourret, D., Cepeda-Jiménez, C. M., Pérez-Prado, M. T., Laurson, L., Alava, M. J.

“…Magnesium alloys, among the lightest structural materials, represent excellent candidates for lightweight applications. However, industrial applications remain…”
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Mechanical behavior and microstructural evolution of a Mg AZ31 sheet at dynamic strain rates by Ulacia, I., Dudamell, N.V., Gálvez, F., Yi, S., Pérez-Prado, M.T., Hurtado, I.

“…The mechanical behavior of an AZ31 Mg sheet has been investigated at high strain rate (10 3 s −1) and compared with that observed at low rates (10 −3 s −1)…”
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Microplasticity-based rationalization of the room temperature yield asymmetry in conventional polycrystalline Mg alloys by Cepeda-Jiménez, C.M., Pérez-Prado, M.T.

“…The aim of the present work is to assess the activity of the dominant deformation slip systems in the commercial cast alloy Mg-9%wt. Al-1%wt. Zn (AZ91) in the…”
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First experimental observation of shear induced hcp to bcc transformation in pure Zr by Pérez-Prado, M T, Zhilyaev, A P

“…Shear stresses are shown to induce the alpha (hcp) to omega (simple hexagonal) plus beta (bcc) transformation in pure Zr at room temperature. The beta Zr thus…”
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Effect of the heat treatment on the microstructure and hardness evolution of a AlSi10MgCu alloy designed for laser powder bed fusion by Martin, A., San Sebastian, M., Gil, E., Wang, C.Y., Milenkovic, S., Pérez-Prado, M.T., Cepeda-Jiménez, C.M.

“…The aim of this work is to investigate the influence of the addition of Cu on the microstructure and on the microhardness of a laser powder bed fusion…”
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Three-dimensional investigation of grain boundary–twin interactions in a Mg AZ31 alloy by electron backscatter diffraction and continuum modeling by FERNANDEZ, A, JERUSALEM, A, GUTIERREZ-URRUTIA, I, PEREZ-PRADO, M. T

“…The effect of grain boundary (GB) misorientation (θ) on twinning in a Mg AZ31 alloy is investigated using a three-dimensional (3-D) experimental and modeling…”
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In situ analysis of the tensile and tensile-creep deformation mechanisms in rolled AZ31 by Boehlert, C.J., Chen, Z., Gutiérrez-Urrutia, I., Llorca, J., Pérez-Prado, M.T.

“…A rolled AZ31 alloy was tensile tested in a scanning electron microscope at 323K (50°C), 423K (150°C), and 523K (250°C) in order to analyze the deformation…”
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Influence of texture on the recrystallization mechanisms in an AZ31 Mg sheet alloy at dynamic rates by Dudamell, N.V., Ulacia, I., Gálvez, F., Yi, S., Bohlen, J., Letzig, D., Hurtado, I., Pérez-Prado, M.T.

“…► The DRX mechanisms of a Mg AZ31 sheet at impact rates depend on the texture. ► DDRX predominates during compression along the rolling and normal directions…”
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Texture, microstructure and mechanical properties of equiaxed ultrafine-grained Zr fabricated by accumulative roll bonding by Jiang, L., Pérez-Prado, M.T., Gruber, P.A., Arzt, E., Ruano, O.A., Kassner, M.E.

“…The texture, microstructure and mechanical behavior of bulk ultrafine-grained (ufg) Zr fabricated by accumulative roll bonding (ARB) is investigated by…”
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Microstructural evolution in adiabatic shear localization in stainless steel by Meyers, M.A., Xu, Y.B., Xue, Q., Pérez-Prado, M.T., McNelley, T.R.

“…Shear bands were generated under prescribed and controlled conditions in an AISI 304L stainless steel (Fe–18%Cr–8%Ni). Hat-shaped specimens were deformed in a…”
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Effect of indentation size on the nucleation and propagation of tensile twinning in pure magnesium by Sánchez-Martín, R., Pérez-Prado, M.T., Segurado, J., Molina-Aldareguia, J.M.

“…Tensile twinning is a key deformation mode in magnesium and its alloys, as well as in other hcp metals. However, the fundamentals of this mechanism are still…”
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On the relation between the microstructure and the mechanical behavior of pure Zn processed by high pressure torsion by Srinivasarao, B., Zhilyaev, A.P., Langdon, T.G., Pérez-Prado, M.T.

“…Pure Zn was processed by high pressure torsion (HPT) at room temperature in order to evaluate the effect of this severe plastic deformation (SPD) technique on…”
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Effect of ZrH2 particles on the microstructure and mechanical properties of IN718 manufactured by selective laser melting by Galera-Rueda, C., Nieto-Valeiras, E., Gardon, M., Pérez-Prado, M.T., LLorca, J.

“…The influence of Zr additions (in the form of ZrH2 particles) on the microstructure and mechanical properties of IN718 Ni-based superalloy manufactured by…”
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Origin of the reversed yield asymmetry in Mg-rare earth alloys at high temperature by Hidalgo-Manrique, P., Herrera-Solaz, V., Segurado, J., Llorca, J., Gálvez, F., Ruano, O.A., Yi, S.B., Pérez-Prado, M.T.

“…The mechanical behaviour in tension and compression of an extruded Mg–1wt.% Mn–1wt.% Nd (MN11) alloy was studied along the extrusion direction in the…”
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Grain refinement of Mg–Al–Zn alloys via accumulative roll bonding by Pérez-Prado, M.T., Valle, del, Ruano, O.A.

“…An increase in the Al content of Mg AZ alloys from 3% to 9% allows obtaining ultra-fine grain sizes via severe plastic deformation by accumulative roll…”
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Texture evolution during large-strain hot rolling of the Mg AZ61 alloy by del Valle, J.A., Pérez-Prado, M.T., Ruano, O.A.

“…Grain refinement in a Mg-based AZ61 alloy of initially coarse, recrystallized microstructure was successfully achieved by thermomechanical processing (TMP)…”
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Effect of Nd Additions on Extrusion Texture Development and on Slip Activity in a Mg-Mn Alloy by Hidalgo-Manrique, Paloma, Yi, S. B., Bohlen, J., Letzig, D., Pérez-Prado, M. T.

“…Two Mg-1 wt pct Mn alloys containing 0.5 wt pct and 1 wt pct Nd have been processed by indirect extrusion at temperatures ranging from 548 K (275 °C) to 633 K…”
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