Microstructure evolution and mechanical properties of pure aluminum deformed by equal channel angular pressing and direct extrusion in one step through an integrated die

Mohamed Ibrahim Abd El Aal; Ho Yong Um; Eun Yoo Yoon; Hyoung Seop Kim

doi:10.1016/j.msea.2014.11.089

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Microstructure evolution and mechanical properties of pure aluminum deformed by equal channel angular pressing and direct extrusion in one step through an integrated die

Journal article

Peer reviewed

Microstructure evolution and mechanical properties of pure aluminum deformed by equal channel angular pressing and direct extrusion in one step through an integrated die

Mohamed Ibrahim Abd El Aal, Ho Yong Um, Eun Yoo Yoon and Hyoung Seop Kim

Materials science & engineering. A, Structural materials : properties, microstructure and processing, Vol.625, pp.252-263

11/02/2015

DOI: https://doi.org/10.1016/j.msea.2014.11.089

Abstract

Materials Science

Materials Science, Multidisciplinary

Metallurgy & Metallurgical Engineering

Nanoscience & Nanotechnology

Science & Technology

Science & Technology - Other Topics

Technology

In this paper, billets of Al-1080 were successfully processed by ECAP up to 1 pass, and a combination of ECAP + extrusion with extrusion ratios of 2 and 8 through a newly designed integrated die at room temperature. The combination of ECAP + extrusion processes was observed to produce finer grain sizes with greater fractions of high angle grain boundaries (HAGBs) than the ECAP. The average grain size was further decreased and the fraction of high angle grain boundaries (HAGBs) was increased with the increase of the extrusion ratio. Direct extrusion after ECAP enhanced the mechanical properties (tensile strength and hardness) with conserving reasonable degree of ductility (elongation %). ECAP and ECAP + extrusion processed samples, showed large dimple size in the tensile fracture surfaces with clear ductile fracture mode. (C) 2014 Elsevier B.V. All rights reserved.

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Title: Microstructure evolution and mechanical properties of pure aluminum deformed by equal channel angular pressing and direct extrusion in one step through an integrated die
Creators - without role: Mohamed Ibrahim Abd El Aal - Zagazig University
Ho Yong Um - Pohang University of Science and Technology
Eun Yoo Yoon - KIMS, Mat Deformat Dept, Chang Won 641831, South Korea
Hyoung Seop Kim - Pohang University of Science and Technology
Publication Details: Materials science & engineering. A, Structural materials : properties, microstructure and processing, Vol.625, pp.252-263
Publisher: Elsevier
Number of pages: 12
Grant note: Egyptian government post-doctoral fellowship
Identifiers: 9926099408331
Academic Unit: Prince Sattam Bin Abdulaziz University
Language: English
Resource Type: Journal article