Study on Dendrite Shapes of Solidification in an Undercooled Melt

Ching Yen Ho; Yi Chwen Lee; Chia Sheng Shih

doi:10.4028/www.scientific.net/MSF.594.29

Paper Titles

Mechanism Design of ITO-Layer Removal from Color Filter of TFT-LCD
p.1

Design and Fabrication of a General Purpose 3D Digitizer Based on Grinding Technique
p.7

Prototyping of Image-Based Inspection Mechanisms by CAD and Virtual Reality Technology
p.15

Simulation of Dendritic Growth in Solidification of Al-Cu Alloy by Applying the Modified Cellular Automaton Model with the Growth Calculation of Nucleus within a Cell
p.22

Study on Dendrite Shapes of Solidification in an Undercooled Melt
p.29

Simulation of Cooling Process of Medium Thickness Steel Plate
p.34

Deformation Characteristics on Surface Layer of White-Coated Paperboard by Center Bevel Blade Subjected to Pushing Load
p.39

A Forging Simulation by Using the Point Collocation Method with a Boundary Layer of Finite Element
p.45

Bending Die Design for a Pre-Formed Sheet Metal with a Golden Finger Feature
p.51

HomeMaterials Science ForumMaterials Science Forum Vol. 594Study on Dendrite Shapes of Solidification in an...

Study on Dendrite Shapes of Solidification in an Undercooled Melt

Abstract:

Dendrite needles grow from an undercooled melt and their shapes depend on the temperature distribution on the solidification front, which are specified by some parameters such as undercooling, capillary length, diffusivity, convection and kinetic effects. Neglecting the convection and kinetic effects, this study numerically computes the quasi-steady-state integral-differential equation to obtain the shape of a dendrite using solvability condition and investigates the effect of parameters changing the temperature field on the shape of a dendrite. The results reveal that the tip shape enlarges with the decreasing undercooling and increasing capillary length. On the other hand, the increase of thermal diffusivity only slightly reduces the tip radius and shape of a dendrite.