Effects of strain path on the microstructure, tensile properties, and formability of Al/Mg roll-bonded sheets

被引:14
|
作者
Rouzbeh, A. [1 ]
Sedighi, M. [1 ]
Hashemi, R. [1 ]
机构
[1] Iran Univ Sci & Technol, Sch Mech Engn, Tehran 1684613114, Iran
关键词
Roll bonding; Strain path; Cross rolling; Reverse rolling; Direct rolling; Forming limit diagram; GOSS/BRASS TEXTURE RATIO; MECHANICAL-PROPERTIES; INTERFACE MICROSTRUCTURE; EVOLUTION; MAGNESIUM; ALUMINUM; ANISOTROPY; BEHAVIOR; COLD;
D O I
10.1016/j.jmrt.2023.02.148
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this research, the experimental investigation of the change of the strain path on the microstructure, mechanical properties and the forming limit diagram of Al/Mg two-layer sheet made by roll bonding method has been performed. This research tries to make a two-layer Al/Mg sheet with a reduction ratio of 55% by using four single-pass and two-pass (the first pass with a reduction ratio of 40% and the second pass by changing the strain path in the form of direct rolling, reverse rolling and cross rolling) methods. The results show that the microstructure in cross rolling is more uniform than in other cases. No delami-nation is observed in fabricating the bilayer sheets with two passes. The best mechanical properties in terms of ultimate tensile strength and elongation are related to cross-rolled samples. Also, the cross rolling process causes a significant reduction in normal anisot-ropy. The comparison of formability for different conditions indicates the improvement of the forming limit diagram in cross rolling so that the amount of FLD0 for cross-rolled samples has increased by 15.6%, 13.8%, and 5.7%, respectively, compared to single-pass, two-pass direct rolling, and two-pass reverse rolling samples.(c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
引用
收藏
页码:5318 / 5328
页数:11
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