3D FEM Simulation of the Effect of Cooling Rate on SDAS and Macrosegregation of a High Strength Steel

Gary Brionne; Abdelhalim Loucif; Chunping Zhang; Louis Philippe Lapierre-Boire; Mohammad Jahazi

doi:10.4028/www.scientific.net/MSF.941.2360

Paper Titles

Development of an Anti-Trapping Current for Phase Field Models Using Arbitrary CALPHAD Thermodynamics
p.2337

On the Challenges and Prospects of the Superplastic Forming Process
p.2343

A First-Principles Study of the Al (001)/Fe(0-11) Interface
p.2349

Metaheuristic Ab Initio Optimum Search for Doping Effects in Nanocarbons
p.2356

3D FEM Simulation of the Effect of Cooling Rate on SDAS and Macrosegregation of a High Strength Steel
p.2360

Wear Behaviour of Two Different Cemented Carbide Grades in Turning 316 L Stainless Steel
p.2367

Study on the Statistical Errors in X-Ray Stress Measurement with Two-Dimensional Detector
p.2373

Evaluation of Railway Rails Suffered from Rolling Contact Fatigue Using X-Ray Generalized cosα Method
p.2378

Portable System for the Measure of Efficiency in Arc Welding Processes
p.2384

HomeMaterials Science ForumMaterials Science Forum Vol. 9413D FEM Simulation of the Effect of Cooling Rate on...

3D FEM Simulation of the Effect of Cooling Rate on SDAS and Macrosegregation of a High Strength Steel

Abstract:

Secondary dendrite arm spacing (SDAS) is a macrosegregation parameter directly linked to content of macrosegregation through cooling rates. The aim of this paper is to highlight the effect of cooling rate on the SDAS and macrosegregation patterns in a high strength steel. For this purpose, directionnal solidification in a cylinder was modeled with a plane-front solidification. Two cylinders were modeled with different boundary conditions (T_surface = 1000°C and 1200°C). Using the FEM software Thercast, 3D macrosegregation maps were generated with thermomechanic algorithm taking into account metal shrinkage. Using Won’s equation, the influence of cooling rates in the mushy zone on SDAS was determined. The results indicated that a 72% lower difference in the area of negative macrosegregation zone (macrosegregation ratio (r_seg) < -0.016%) for lower cooling rate (T_s = 1200°C). The difference of the area for positive segregation was 85% lower for higher cooling rates.