Microstructure and Mechanical Behavior of Friction Stir Processed Al-Ti-Cu Alloy

Abstract

Friction stir processing (FSP) is a new technique for thermo-mechanical processing of materials. Recently, FSP has been applied to process a powder metallurgy alloy. By this technique, a hot pressed sheet is converted into a fully dense material. In this paper, the mechanical properties and microstructure of a friction stir processed Al-Ti-Cu nanophase alloy are reported. FSP results in a remarkably uniform microstructure wherein the banded structure commonly observed in extruded powder metallurgy alloys is eliminated. The uniform microstructure in FSP Al-Ti-Cu gives strength of over 700 MPa at ambient temperature with more than 5% elongation. The variation of strength and ductility with temperature are also presented. FSP provides a new opportunity to produce high strength powder metallurgy materials with a tailored microstructure.

Department(s)

Materials Science and Engineering

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Wiley, All rights reserved.

Publication Date

01 Dec 2001

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