The recrystallization-assisted reduction in mechanical anisotropy of Al–Zn–Mg–Cu–Zr–Mn alloys

Liangliang Yuan; Mingxing Guo; Yutao Song; Lisha Miao; Ning Jiang; Linzhong Zhuang

doi:10.1515/ijmr-2020-8089

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The recrystallization-assisted reduction in mechanical anisotropy of Al–Zn–Mg–Cu–Zr–Mn alloys

Liangliang Yuan , Mingxing Guo , Yutao Song , Lisha Miao , Ning Jiang und Linzhong Zhuang

Veröffentlicht/Copyright: 2. August 2022

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Aus der Zeitschrift International Journal of Materials Research Band 113 Heft 8

Abstract

In this paper, the effect of composition and solution temperatures on microstructure, texture and mechanical anisotropy of Al–Zn–Mg–Cu–Zr–Mn alloys was investigated by means of optical microscopy, scanning electron microscopy, vickers hardness testing, tensile testing and electron backscatter diffraction analysis. The results indicate that the mechanical anisotropy can be reduced by increasing solution temperature and introducing iron-rich phases, in which equiaxed recrystallized grains and optimized texture distribution can be obtained, especially for the #1 alloy with the presence of iron-rich phases. Additionally, according to the evolution of microstructure and texture, the mechanism of recrystallization affected by solution temperature and iron-rich phases in the Al–Zn–Mg–Cu–Zr–Mn alloys was put forward. The relationship between mechanical anisotropy, microstructure and textures was also established in this paper.

Keywords: Al–Zn–Mg–Cu–Zr–Mn alloys; Formability; Mechanical anisotropy; Microstructure; Solution treatment; Texture

Corresponding author: Mingxing Guo, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, P. R. China; and Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, University of Science and Technology Beijing, 10083, Beijing, P. R. China, E-mail: mingxingguo@skl.ustb.edu.cn

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: Unassigned

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work was supported by the National Key Research and Development Program of China (2021YFE0115900), National Natural Science Foundation of China (Nos. 51871029, 51571023 and 51301016), Government Guided Program-Intergovernmental Bilateral Innovation Cooperation Project (No. BZ2019019), the Opening Project of State Key Lab of Advanced Metals and Materials (Nos. 2020-ZD02, 2022-Z03) and Industry-University Cooperation Collaborative Education Project (Nos. 202102437001, 202102437002).
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-09-18

Revised: 2022-06-08

Accepted: 2022-03-31

Published Online: 2022-08-02

Published in Print: 2022-08-26

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https://doi.org/10.1515/ijmr-2020-8089

Schlagwörter für diesen Artikel

Al–Zn–Mg–Cu–Zr–Mn alloys; Formability; Mechanical anisotropy; Microstructure; Solution treatment; Texture