Issue |
MATEC Web Conf.
Volume 326, 2020
The 17th International Conference on Aluminium Alloys 2020 (ICAA17)
|
|
---|---|---|
Article Number | 09002 | |
Number of page(s) | 5 | |
Section | Advanced Characterization | |
DOI | https://doi.org/10.1051/matecconf/202032609002 | |
Published online | 05 November 2020 |
Effect of solution treatment on microstructures and mechanical properties of industrial 7050 thick plate
1 International Joint Laboratory for Light Alloys (Ministry of Education), College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
2 Electron Microscopy Center of Chongqing University, Chongqing 400044, China
3 Southwest Aluminum (Group) Co., Ltd, Chongqing 401326, China
4 Key Laboratory for Light-weight Materials, Nanjing Tech University, Nanjing 210009, China
* Corresponding author: zhihongjia@cqu.edu.cn.org
In this work, effect of solution treatments on the microstructures and mechanical properties of industrial 7050 aluminum alloy thick plate was investigated by tensile test, scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and transmission electron microscopy (TEM). The results show that the area fraction of residual phases decreases with increasing solution temperature from 475°C to 500°C. The overheating phenomenon identified by compound melting ball and crystal separating phase was observed at a temperature of 485°C or above. The compound melting balls are composed of S(Al2CuMg) phase dissolved with Zn atoms and Al matrix. The crystal separating phase is consisted of Al2Cu phase and the amorphous structure containing solute atom Mg. The maximum tensile strength of 529 MPa was obtained for the alloy solution treated at 475°C for 3h followed by peak aging at 120°C for 24h.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.