Solid-liquid surface energy in the AlMg system

Gündüz, Mehmet; Hunt, J. D.

doi:10.1016/0001-6160(89)90068-0

Cited by 136 publications

(78 citation statements)

References 19 publications

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“…To observe the equilibrated grain boundary groove shapes in opaque materials, Gündüz and Hunt [10,12] designed a radial heat flow apparatus. Maraşli and Hunt [13,14] improved the experimental apparatus for higher temperature.…”

Section: A Experimental Apparatusmentioning

confidence: 99%

“…When the interface energy is isotropic, the force balance can be expressed as [11] where A and B are the angles that the solid-liquid interfaces make with the y-axis, as shown in Figure 1. If the grains s SS ϭ s SL A cos u A ϩ s SL B cos u B on either side of the interface are the same phase, then the grain boundary energy can be expressed by [12] where is the angle that the solid-liquid interfaces make with the y-axis. As can be seen from Eqs.…”

Section: The Grain Boundary Energymentioning

confidence: 99%

“…This technique has been used to directly measure the solid-liquid interface energy for transparent materials. [1][2][3][4][5][6][7][8][9] Gündüz and Hunt [10,11,12] extended the technique to measure solid-liquid interface energies for opaque materials. The Gibbs-Thomson coefficient, ⌫, is expressed in the form of a change in undercooling, ⌬T r , with radius, r, for a cylinder as [1] Equation [1] may be integrated in the y direction (perpendicular to the macroscopic interface) from the flat interface to a point on the cusp: [11] [2] Ύ y 0 ⌬T r dy ϭ ⌫ Ύ y 0 1 r dy…”

Section: Introductionmentioning

confidence: 99%

“…[10,11,12] performed measurements of the solid-liquid interface energies in the Al-Cu, Al-Si, Pb-Sn, and Al-Mg eutectic-based systems.…”

Section: Introductionmentioning

confidence: 99%

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Experimental determination of solid-liquid interfacial energy for Zn solid solution in equilibrium with the Zn-Al eutectic liquid

Keşlıoğlu

Maraşlı

2004

Metall Mater Trans A

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The equilibrated grain boundary groove shapes for the Zn solid solution in equilibrium with the Zn-Al eutectic liquid were observed by rapid quenching. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient and the solid-liquid interfacial energy for the Zn solid solution in equilibrium with the Zn-Al eutectic liquid have been determined to be (5.80 Ϯ 0.18) ϫ 10 Ϫ8 Km and (93.496 Ϯ 7.57) ϫ 10 Ϫ3 Jm Ϫ2 with the numerical method and from the GibbsThomson equation, respectively. The grain boundary energy for the same material has been calculated to be (182.302 Ϯ 18.23) ϫ 10 Ϫ3 Jm Ϫ2 from the observed grain boundary groove shapes. The thermal conductivities of the solid and liquid phases for Zn-5 wt pct Al and Zn-0.5 wt pct Al alloys have also been measured.

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Section: A Experimental Apparatusmentioning

confidence: 99%

Section: The Grain Boundary Energymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…[10,11,12] performed measurements of the solid-liquid interface energies in the Al-Cu, Al-Si, Pb-Sn, and Al-Mg eutectic-based systems.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental determination of solid-liquid interfacial energy for Zn solid solution in equilibrium with the Zn-Al eutectic liquid

Keşlıoğlu

Maraşlı

2004

Metall Mater Trans A

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“…Moreover, the equilibrium shape of the grain boundary groove in rapidly quenched samples obtained by annealing in a temperature gradient is often used to estimate the solid-liquid interfacial energy. [4][5][6][7] That is, the balance between the solid-liquid interfacial energy and grain boundary energy at a triple point determines the equilibrium shape of the grain boundary groove. In addition, the solid-liquid interfacial energies for alloys have recently been estimated from the relation between the tip radius and growth velocity of dendrites obtained from the in-situ observation of solidification using synchrotron radiation X-rays.…”

Section: Introductionmentioning

confidence: 99%

Large-scale Molecular Dynamics Study on Evolution of Grain Boundary Groove of Iron

2012

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The kinetics of a solid-liquid interface of iron with a triple point is investigated by performing a largescale molecular dynamics (MD) simulation. A grain boundary groove evolves at the triple point of a solidliquid interface with a bccΣ3(111) tilt grain boundary during solidification, whereas a solid-liquid interface with a twin boundary of small grain boundary energy is almost planar except in the vicinity of the triple point. The propagation velocity of the solid-liquid interface without a triple point is almost proportional to the degree of undercooling. On the other hand, that of the interface with the triple point deviates from linearity as the degree of undercooling decreases due to the balance between the driving force of the solidliquid interface induced by undercooling and the pulling force excited by the grain boundary. Moreover, it is found that the equilibrium temperature at which the solid-liquid interface does not move is in close agreement with the curvature undercooling estimated by the Gibbs-Thomson effect. These insights are newly obtained by the large-scale MD simulation performed on a graphic processing unit (GPU), which achieves about 100 times the speed of our previous simulation performed on a single central processing unit (CPU).

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