Microstructure refinement and mechanical properties improvement of Al-Si-Fe alloys by hot extrusion using a specially designed high-strain die

Sakow, Shino; Tokunaga, Toko; Ohno, Munekazu; Matsuura, Kiyotaka

doi:10.1016/j.jmatprotec.2019.116447


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Microstructure refinement and mechanical properties improvement of Al-Si-Fe alloys by hot extrusion using a specially designed high-strain die

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/84213

Title:	Microstructure refinement and mechanical properties improvement of Al-Si-Fe alloys by hot extrusion using a specially designed high-strain die
Authors:	Sakow, Shino Browse this author
	Tokunaga, Toko Browse this author
	Ohno, Munekazu Browse this author →KAKEN DB
	Matsuura, Kiyotaka Browse this author →KAKEN DB
Keywords:	Al-Si alloy
	Intermetallic phase
	Heteromorphic die extrusion
	Elongation
Issue Date:	Mar-2020
Publisher:	Elsevier
Journal Title:	Journal of materials processing technology
Volume:	277
Start Page:	116447
Publisher DOI:	10.1016/j.jmatprotec.2019.116447
Abstract:	A heteromorphic extrusion die with right-angle corners in the die hole was designed in this study to give a high local strain to the extrudate metal during hot extrusion of Al-Si-Fe alloys, and the strain distribution in the extrudate metal was evaluated using the finite element method. It was demonstrated that the change in metal flow direction at the right-angle corners is effective for generating high strain in the extrudate metal and refining brittle inclusion particles such as primary Al9Si2Fe2 (beta phase) particles and eutectic Si particles. The refinement of these particles led to significant improvements in tensile elongation and plastic deformability in cold rolling of the alloys.
Rights:	© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Rights:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Type:	article (author version)
URI:	http://hdl.handle.net/2115/84213
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松浦清隆

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