MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Improved Combination of Strength and Ductility in Zirconium-Added Al-Zn-Mg-Cu Alloy Processed with High-Pressure Torsion
Hiroyuki KawabataIchiro AoiKeiichiro Oh-ishiTakanori NakagakiYoshihiro ShimizuShigeru Kuramoto
Author information
JOURNALS FREE ACCESS FULL-TEXT HTML

2016 Volume 57 Issue 10 Pages 1735-1740

Details
Abstract

To realize high-strength and high-ductility aluminum alloys, an Al-Zn-Mg-Cu-based alloy was produced by high-pressure torsion (HPT) processing. The chromium in the alloy was replaced with zirconium, and the iron content of the alloy was decreased to avoid ductility loss due to iron-containing intermetallic compounds formed during crystallization. The microstructures and mechanical properties of the processed alloy were investigated. The grains were elongated perpendicular to the rotation axis. The elongation of the alloy containing chromium decreased with increasing number of turns. In the case of the alloy in which chromium was replaced with zirconium, the strength increased with increasing number of turns, without reducing the elongation. The alloy exhibited an ultimate tensile strength of 929 MPa and an elongation of 6.4%.

Information related to the author
© 2016 The Japan Institute of Metals and Materials
Previous article Next article
feedback
Top