scholarly journals Solidification Process of a Binary Alloy by Dual Wavelength Holographic Interferometry

2004 ◽  
Vol 24 (Supplement1) ◽  
pp. 161-164
Author(s):  
Noboru TSUSHIMA ◽  
Akira NARUMI ◽  
Ichirou NAKANE ◽  
Atsushi AKISAWA ◽  
Takao KASHIWAGI
Keyword(s):  
Binary Alloy ◽  
Holographic Interferometry ◽  
Solidification Process ◽  
Dual Wavelength

Visualization of Transient Solidification Process of Aqueous Solution by Dual Wavelength Holographic Interferometry

2005 ◽  
Vol 127 (8) ◽  
pp. 801-801 ◽  
Author(s):  
Noboru Tsushima ◽  
Akira Narumi ◽  
Ichiro Nakane ◽  
Takao Kashiwagi ◽  
Atsushi Akisawa
Keyword(s):  
Aqueous Solution ◽  
Holographic Interferometry ◽  
Solidification Process ◽  
Dual Wavelength

scholarly journals A Study on the Solidificating Process of a Binary Solution by Dual Wavelength Holographic Interferometry

1997 ◽  
Vol 17 (Supplement1) ◽  
pp. 49-52
Author(s):  
Noboru TSUSHIMA ◽  
Akira NARUMI ◽  
Ichirou NAKANE ◽  
Takao KASHIWAGI
Keyword(s):  
Holographic Interferometry ◽  
Binary Solution ◽  
Dual Wavelength

Numerical Study of a Vertical Solidification Process under Magnetic Field in Unsteady State

2010 ◽  
Vol 297-301 ◽  
pp. 254-262
Author(s):  
Sabrina Nouri ◽  
Mouhamed Benzeghiba ◽  
Ahmed Benzaoui
Keyword(s):  
Magnetic Field ◽  
Binary Alloy ◽  
Numerical Study ◽  
Magnetic Field Effect ◽  
Solidification Process ◽  
Computer Code ◽  
Thermosolutal Convection ◽  
Unsteady State ◽  
Vertical Solidification ◽  
The Magnetic Field

Numerical computation is achieved in an axisymmetric configuration to analyze the magnetic field effect on thermosolutal convection during vertical solidification of a binary alloy. The bath is exposed to a uniform temperature profile in unsteady state. During the growth three regions appear: liquid, mushy and solid zones. The mushy zone is assimilated to porous medium. A mathematical model of heat, momentum and solute transfer has been developed in primitive variables (pressure-velocity). A single domain approach (enthalpy method) is used to build the equations system. In this context, a computer code has been developed and validated with previous studies. The results in term of stream function and solute concentration show the strong effect of the magnetic field on the fluid flow and on the solutal stratification. The effects of magnetic field and melt convection intensity were demonstrated. The main results show that the quality of highly doped binary alloy crystals can be improved when the growth process occurs at low pulling rates and under a magnetic field.

Numerical Simulation of Binary Alloy Crystal Growth Using Phase-Field Method

2013 ◽  
Vol 842 ◽  
pp. 57-60 ◽  
Author(s):  
Yan Bo Dong ◽  
Ming Chen ◽  
Xi Wang
Keyword(s):  
Crystal Growth ◽  
Directional Solidification ◽  
Binary Alloy ◽  
Phase Field ◽  
Phase Field Model ◽  
Solidification Process ◽  
Phase Field Method ◽  
Columnar Dendrite ◽  
Competitive Growth ◽  
Directional Solidification Process

The competitive growth of multiple dendrites and crystal growth of directional solidification in a Mg-Al binary alloy were simulated using phase-field model, and the effect of undercooling value on the microstructural dendritic growth pattern in directional solidification process was studied in the paper. The simulation results showed the impingement of the adjacent grains, which made the dendrite growth inhibited in the competitive growth of multiple dendrites, and in directional solidification process, quantitative comparison of different undercooling values that predicted the columnar dendrite evolution were carried out. With the increasing of the undercooling value, the dendrite tip radius and second dendrite arms became smaller, and the crystal structure is more uniform and dense.

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