Preparation of Functionally Graded Aluminum Alloy Composites with Alumina Dispersant under Gravity Casting

Gen Sasaki; Chisato Indo; Kenjiro Sugio

doi:10.4028/p-2yL48a

Paper Titles

Preface

Effect of Cold Rolling and Annealing on Grain Refinement of β-Type Ti-13Nb-1.5Ta-3Mo Titanium Alloy
p.3

Influence of Solidifying Layer Peeling on Strip Thickness in Roll Casting
p.9

Mechanical Properties of Roll Cast AC2A Aluminum Alloy Strips
p.15

Preparation of Functionally Graded Aluminum Alloy Composites with Alumina Dispersant under Gravity Casting
p.23

Microstructural Evolution and Corrosion Behavior of Selective Laser Melted 17-4 pH Stainless Steel
p.31

Analysis and Testing of Infills of 3D Printed Specimens with Varying Infills
p.37

Measurement and Testing of the Effect of Infill on Additively Manufactured TPU Part
p.53

Integration of Machine Learning in Additive Manufacturing for Material Extrusion and Powder Bed Fusion, a Brief Literature Review
p.61

HomeKey Engineering MaterialsKey Engineering Materials Vol. 1018Preparation of Functionally Graded Aluminum Alloy...

Preparation of Functionally Graded Aluminum Alloy Composites with Alumina Dispersant under Gravity Casting

Abstract:

By replacing the interface with sharp change properties with a functionally graded material with a gradually changing composition, a stable interface can be formed for mechanical and functional properties. In this study, the final goal is to functionally grade the interface between aluminum and alumina (Al₂O₃)/aluminum (Al) composites. First, the segmentation velocity of Al₂O₃ particles under gravity was measured to clarify the possibility of functional grading. The starting materials used were A356.0 Al alloy and α-type Al₂O₃ particles. The segmentation velocity obtained by the experiment was much faster than the theoretical velocity obtained by Stokes' law. It seems Stokes' law assumes that the particles are spherical and there is no interaction between particles, but the actual particle velocity was affected by the actual particle shape and interaction between particles. These factors affect the change in the segmentation velocity. The height of the mold was set to 40 mm, and an Al₂O₃ particle/Al composite with a particle size of 6.7 μm was placed on the top and an Al alloy was placed on the bottom in the mold, melted, and rapidly solidified after 12 sec., and an Al₂O₃ particle-dispersed Al alloy functionally graded composite was obtained under gravity.

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Periodical:

Key Engineering Materials (Volume 1018)

Pages:

23-28

DOI:

https://doi.org/10.4028/p-2yL48a

Citation:

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Online since:

June 2025

Authors:

Gen Sasaki*, Chisato Indo, Kenjiro Sugio

Keywords:

Alumina, Aluminum Matrix Composites, Casting, Dispersibility, Gravity

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* - Corresponding Author

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