Producing Ultrafine-grained Aluminum Rods by Cyclic Forward-Backward Extrusion: Study the Microstructures and Mechanical Properties

Abstract

A cyclic forward-backward extrusion (CFBE) process was used as a severe plastic deformation (SPD) technique to produce ultrafine-grained aluminum rods. Yield strength and tensile strength of the specimens increased by increasing the number of CFBE cycles, while elongation to break decreased due to an increase in the grain refinement and microhardness. According to transmission electron microscopy (TEM) and electron backscatter diffraction (EBSD) results, the average grain size was reduced from 120 µm to 315 nm after only 3 cycles of CFBE.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Aluminum rods; Average grain size; EBSD; Electron back scatter diffraction; Elongation to break; Microstructures and mechanical properties; Severe plastic deformations; Transmission electron microscopy (TEM); Ultrafine-grained; Aluminum; Grain refinement; Grain size and shape; Mechanical properties; Plastic deformation; Transmission electron microscopy; Aluminum alloys

International Standard Serial Number (ISSN)

0167-577X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Elsevier, All rights reserved.

Publication Date

01 May 2012

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