Friction Stir Microstructural Modification of Investment Cast F357

Abstract

A hypoeutectic Al-Si alloy has been friction stir processed in this study using various run parameter combinations. Tensile test results indicate at least three times improvement in ductility value over as-cast T6 condition because of refinement in Si particle size. Si particle size and shape has been quantified and correlated with mechanical properties. Tool rotation rate seems to have the most significant effect on properties. Higher tool rotation rate resulted in more uniform and homogeneous microstructure though some anomaly is observed at very high tool rotation rate.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Aluminum Alloys; Casting Modification; Friction Stir Processing

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 The Minerals, Metals & Materials Society (TMS), All rights reserved.

Publication Date

01 Jan 2007

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