Grain Competitive Growth Prediction during Solidification in Single Crystal Superalloy DD6 Castings

Hai Peng Jin; Jia Rong Li

doi:10.4028/www.scientific.net/MSF.783-786.2148

Paper Titles

On the Stress Development in SA508 Autogenous Weld
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Local Brittle Zones and the Role of Niobium
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Comparative Analysis by the Newton Method of New Constitutive Strain Dependent Creep Equations Based on the Garofalo Equation
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Integrated Database Development for Casting Design and its Application to Casting Simulation
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Grain Competitive Growth Prediction during Solidification in Single Crystal Superalloy DD6 Castings
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Predicting the Microstructural Evolution of an Austenitic Stainless Steel by Hybrid Modeling
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Thermo-Mechanically Coupled Modeling of Cooling Temperature History Effects on Precipitation Hardening in Hot Strip Coiled Products
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Towards a 3-Dimensional Phase-Field Model of Non-Isothermal Alloy Solidification
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Density Functional Theory Study of H₂O Molecules on Cr₂O₃ Surfaces
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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Grain Competitive Growth Prediction during...

Grain Competitive Growth Prediction during Solidification in Single Crystal Superalloy DD6 Castings

Abstract:

Competitive growth and grain selection were simulated and analyzed during the directional solidification with the conditions for single crystal superalloy DD6 castings using Commercial software, ProCAST. A three dimensional cellular automaton (CA) model coupled with finite-element (FE) heat flow calculation was applied. Measurements at the grain scale were made using the EBSD method at the cross sections in the starter block and grain selector at an interval of 4 mm from the chill surface. The grain characteristics and the rules of competition growth were obtained. The validity of the simulation results were compared with those of the experiment. It concluded that the model-predicted tendency shows satisfactory agreement with the experiment. Increasing the distance from the chill decreases the number of grains, increases the radius of grains and drives the crystallization orientation of grains to principal stress orientation.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

2148-2153

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.2148

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Online since:

May 2014

Authors:

Hai Peng Jin*, Jia Rong Li

Keywords:

Grain Competition Growth, Numerical Simulation, Single Crystal Superalloy Castings

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