Paper Title:

The Influence of Hydrostatic Extrusion on the Microstructure of 6082 Aluminium Alloy

Periodical Solid State Phenomena (Volume 114)
Main Theme High Pressure Technology of Nanomaterials
Edited by Witold Lojkowski and John R. Blizzard
Pages 145-150
DOI 10.4028/www.scientific.net/SSP.114.145
Citation Pawel Widlicki et al., 2006, Solid State Phenomena, 114, 145
Online since July, 2006
Authors Pawel Widlicki, Halina Garbacz, Małgorzata Lewandowska, Wacław Pachla, Mariusz Kulczyk, Krzysztof J. Kurzydłowski
Keywords Aluminum Alloy, Grain Refinement, Hydrostatic Extrusion (HE), Inclusion
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Abstract

Hydrostatic extrusion can be viewed as one of the methods of Severe Plastic Deformation, SPD, for the fabrication of ultra-fine grained alloys which causes a significant increase in the mechanical properties such as tensile strength and hardness. In the present study the microstructure of 6082 aluminium alloy after hydrostatic extrusion was investigated. Hydroextrusion was performed in three steps with accumulated true strains of 1.34, 2.73 and 3.74 respectively. Microstructural observations were carried out using SEM, TEM and light microscopy. Grain and inclusion sizes, shapes and distribution were investigated in the HE processed samples. The study has shown that the hydrostatic extrusion process results in a profound refinement of both the grain size and the inclusions in 6082 aluminium alloy.