Potential Energy Curves &amp;amp; Material Properties

Padmavathi, D. A.

doi:10.4236/msa.2011.22013

Cited by 28 publications

(20 citation statements)

References 1 publication

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“…According to the general relationship between the property and potential energy, the small thermal expansion coef cient indicates the potential energy curve is deep and narrow, and the bonding energy is large. 17) These thermal stabilities of the atomic bond are consistent with the high melting point and high modulus of elastic properties of LPSO Mg alloys. Furthermore, the transition metals such as Zn and Y are brittler than typical metals such as Mg due to the covalent bonding with 3d-electron.…”

Section: Resultssupporting

confidence: 61%

Measurement of Thermal Expansion Coefficient of 18<i>R</i>-Synchronized Long-Period Stacking Ordered Magnesium Alloy

Yasuda

Kimura

2016

Mater. Trans.

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We measured the thermal expansion coef cients of an 18R-synchronized long-period stacking ordered magnesium alloy (Mg 85 Zn 6 Y 9 ) and an α-phase pure magnesium (α-Mg). This was achieved by using a Gandol camera, which was attached on a high precision diffractometer at SPring-8 BL40XU beamline. By using this system, ne powder diffraction data could be obtained even from a highly oriented Mg 85 Zn 6 Y 9 polycrystal at different temperatures between 95 and 440 K. The thermal expansion coef cients along a-and c-axes were determined from the re ned cell parameters. The thermal expansion coef cients of the Mg 85 Zn 6 Y 9 are smaller than those of the α-Mg.

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Section: Resultssupporting

confidence: 61%

Measurement of Thermal Expansion Coefficient of 18<i>R</i>-Synchronized Long-Period Stacking Ordered Magnesium Alloy

Yasuda

Kimura

2016

Mater. Trans.

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“…Metastable states of a system of interacting particles determine much of the system's behaviour, yet they can be difficult to find and study computationally because they can be very sensitive to the choice of interaction potential between the particles [1][2][3]. For mesoscale particles like colloids, the interaction potential is not always well known, because it can depend on a combination of factors that occur on a much smaller scale than the particles, such as electrostatic interactions, van der Waals interactions, the presence of impurities in solution, complex surface interactions created by tethered polymers, and other physical effects.…”

Section: Introductionmentioning

confidence: 99%

From canyons to valleys: Numerically continuing sticky-hard-sphere clusters to the landscapes of smoother potentials

Trubiano

Holmes-Cerfon

2020

Phys. Rev. E

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We study how the energy landscape for particles with short-range interactions varies as one increases the range of the interaction potential. We start with the local minima for 6 ≤ N ≤ 12 sticky hard spheres, which interact with a delta-function potential at their point of contact, and use numerical continuation to evolve the clusters as the range of the potential increases, using both the Lennard-Jones and Morse families of interaction potentials. As the range increases, clusters (local minima) merge, until at long ranges only one or two clusters are left. We compare the corresponding bifurcation diagrams for different potentials and find them to be insensitive to the interaction strength or particular potential at short range; they are identical up to about 5% of particle diameter and very similar up to 8%. The bifurcation diagrams vary significantly for ranges of 30% or longer, with more variation generally with the Lennard-Jones family than the Morse family of potentials. For most merge events, the range at which the merge occurs is possible to predict from the geometry of the starting sticky hard sphere cluster; an exception to this rule occurs with so-called nonharmonic clusters, which have a zero eigenvalue in their Hessian and undergo a more global rearrangement. arXiv:1908.09896v1 [cond-mat.soft]

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“…La resistencia mecánica de un material [6] determina la magnitud de la fuerza o carga que puede soportar un material antes de ceder, y se relaciona con las fuerzas interatómicas de atracción y repulsión que actúan en un material en particular. El esfuerzo o tensión es el resultado de la respuesta interna que exhibe un material cuando se imponen fuerzas, y se puede expresar como la fuerza por unidad de área, como se representa en la ecuación (1):…”

Section: Introductionunclassified

Comportamiento mecánico y microestructural de la aleación AlMgSipara conductores eléctricos

Jiménez¹

2018

revuin

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El propósito del presente trabajo es evaluar las propiedades mecánicas y las características microestructurales de una aleación AlMgSi, sometida a un proceso de trefilado. Se analizaron muestras de alambrón y del alambre, mediante técnicas de espectrometría, ensayos de tracción y dureza, microscopía óptica y electrónica de barrido con EDX. Se confirmó que la aleación cumple con las especificaciones químicas de la AA 6201, y se verificó que los cambios microestructurales que ocurren en el material, durante el conformado en frío y envejecimiento natural, impactan su comportamiento mecánico, lo que sugiere una relación estrecha entre la resistencia mecánica, la ductilidad y la dureza con las características de las fases presentes. Se reveló una microestructura texturizada de granos elongados y la presencia de partículas de precipitados, cuya morfología y distribución dependen de las direcciones longitudinal y transversal, con respecto a la dirección del flujo de material, lo que evidencia que la aleación se endurece por deformación plástica y precipitación.

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Potential Energy Curves & Material Properties

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Cited by 28 publications

References 1 publication

Measurement of Thermal Expansion Coefficient of 18<i>R</i>-Synchronized Long-Period Stacking Ordered Magnesium Alloy

Measurement of Thermal Expansion Coefficient of 18<i>R</i>-Synchronized Long-Period Stacking Ordered Magnesium Alloy

From canyons to valleys: Numerically continuing sticky-hard-sphere clusters to the landscapes of smoother potentials

Comportamiento mecánico y microestructural de la aleación AlMgSipara conductores eléctricos

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