Enhancing Thermal Stability of Binary Al-Mg Alloys by Tailoring Grain Orientations Using a High Solute Mg Content

We found that the high solid solution Al-9 Mg alloy with a bimodal grain structure processed by hard-plate rolling (HPR) exhibited enhanced thermal stability despite annealing at 275 °C for 24 hours. The notable thermal stability originates from the inherent stable deformation microstructure dominat...

Full description

Saved in:
Bibliographic Details
Published in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2019-11, Vol.50 (11), p.5264-5270
Main Authors: Zha, Min, Meng, Xiang-Tao, Yu, Zhi-Yuan, Zhang, Hong-Min, Yin, Hao-Liang, Zhang, Qing-Quan, Wang, Cheng, Wang, Hui-Yuan, Jiang, Qi-Chuan
Format: Article
Language:English
Subjects:
Aluminum base alloys
Annealing
Binary alloys
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coarsening
Deformation
Grain structure
Materials Science
Metallic Materials
Microstructure
Nanotechnology
Plates (structural members)
Solid solutions
Structural Materials
Surfaces and Interfaces
Thermal stability
Thin Films
Ultrafines
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We found that the high solid solution Al-9 Mg alloy with a bimodal grain structure processed by hard-plate rolling (HPR) exhibited enhanced thermal stability despite annealing at 275 °C for 24 hours. The notable thermal stability originates from the inherent stable deformation microstructure dominated by (101)-oriented coarse grains induced by a high solute Mg content, which further stabilizes the microstructure upon static annealing. Moreover, recovery occurs preferentially in coarse grains, leading to slow coarsening of the ultrafine grains. This paper provides a new way to improve thermal stability of severely deformed Al-Mg alloys by tailoring grain orientations.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-019-05404-9