Yuna Presentaion

Effect of solidification through cross-section change on dendritic array morphology in single crystal castings

Yuna Marcos dos Anjos

Chemical and Biomedical Engineering Department

Cleveland State University

Summer 2015

OutlineIntroductionDirectional SolidificationExperimentConclusions

Introduction

Directional solidification

Directional Solidification

Directional Solidification

Mushy Zone

ExperimentsAlloy selection

Table 1: Coefficient of Thermal Expansion and Coefficient of Solutal Expansion of the Alloy of Interest Alloy 𝛽𝑇 (K-1) 𝛽 𝐶 (% solute)-1

Al-7 wt% Si -1.8510-4 1.310-3

Steady-State Portion

Cross-section ChangeContractions

Cross-section ChangeExpansions

Solid

Conclusion