An extended morphological stability model for a planar interface incorporating the effect of nonlinear liquidus and solidus

2008 ◽  
Vol 56 (11) ◽  
pp. 2592-2601 ◽  
Author(s):  
Haifeng Wang ◽  
Feng Liu ◽  
Wei Yang ◽  
Zheng Chen ◽  
Gencang Yang ◽  
...  
Keyword(s):  
Planar Interface ◽  
Morphological Stability ◽  
Stability Model

The effect of anisotropic surface tension on the morphological stability of planar interface during directional solidification

2009 ◽  
Vol 18 (4) ◽  
pp. 1691-1699 ◽  
Author(s):  
Chen Ming-Wen ◽  
Lan Man ◽  
Yuan Lin ◽  
Wang Yu-Yan ◽  
Wang Zi-Dong ◽  
...  
Keyword(s):  
Surface Tension ◽  
Directional Solidification ◽  
Planar Interface ◽  
Morphological Stability ◽  
Anisotropic Surface

Morphological stability of a planar interface subject to rapid quenching

1998 ◽  
Vol 186 (1-2) ◽  
pp. 291-297 ◽  
Author(s):  
A. Ludwig ◽  
K. Greven ◽  
P.R. Sahm
Keyword(s):  
Rapid Quenching ◽  
Planar Interface ◽  
Morphological Stability

The Effect of Anisotropic Surface Tension on Directional Solidification in the Extremely Short Wave Region

2011 ◽  
Vol 365 ◽  
pp. 130-134
Author(s):  
Ming Wen Chen ◽  
Xin Feng Wang ◽  
Yan Lin Wang ◽  
Zi Dong Wang
Keyword(s):  
Surface Tension ◽  
Expansion Method ◽  
Short Wave ◽  
Planar Interface ◽  
Morphological Stability ◽  
Tension Parameter ◽  
Anisotropic Surface ◽  
Wave Region ◽  
Short Wave Region ◽  
Perturbation Growth

The morphologicalstability of a planar interface with the inclusion of the anisotropic surface tension is studied. The dispersion relation is obtained by means of the multi-variable expansion method. The result shows that the morphological stability of the solidification system in the extremely short wave region depends on the undercooling. As the anisotropic surface tension parameter increases the perturbation growth rate of the interface increases and the solidification system in the extremely short-wave region tends to destabilize.

Interface Morphological Stability of Unidirectionally Solidified RE123 Superconductor

1997 ◽  
Vol 481 ◽  
Author(s):  
M. Sumida ◽  
Y. Shiohara ◽  
T. Umeda
Keyword(s):  
Growth Rate ◽  
Volume Fraction ◽  
Growth Front ◽  
Single Crystal Growth ◽  
Planar Interface ◽  
Constitutional Supercooling ◽  
Particle Radius ◽  
Morphological Stability ◽  
Growth Interface ◽  
Interface Stability

ABSTRACTA simple model is proposed to analyze the interface stability of the RE123 superconductor in accordance with the constitutional supercooling criterion. As the single crystal growth of the 123 phase is largely dependent on the growth interface stability, a quantitative analysis has been required. From the numerical analysis for the case of peritectically solidified Sm123, it was clarified that the constitutional supercooling must exist in the liquid when the 123 growth interface comes close to a 211 particle. It could also predict that larger 211 particle radius, smaller volume fraction of the 211 particles, larger growth rate, or smaller imposed temperature gradient cause easy occurrence of the constitutional supercooling. The growth rate and a 211 particle radius are determining parameters. Further consideration of the nucleation at the L/211 interface just ahead of the 123 growth front could describe the 123 growth morphological transition from with the planar interface to the equiaxed blocky.

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