Precipitation-hardness map for Al-Cu-Mg alloy (AA2024-T3)

被引：32
作者：
Esin, V. A. [1 ]
Briez, L. [1 ,2 ]
Sennour, M. [1 ]
Koster, A. [1 ]
Gratiot, E. [2 ]
Crepin, J. [1 ]
机构：
[1] PSL Univ, Ctr Mat CNRS UMR 7633, MINES ParisTech, Evry, France
[2] Dassault Aviation, St Cloud, France
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 854卷
关键词：
2024 aluminium alloy; Precipitation; Co-clusters; GPB zones; Hardness;
D O I：
10.1016/j.jallcom.2020.157164
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
By combining differential scanning calorimetry analysis and high-resolution transmission electron microscopy observations, the precipitation map for Al-Cu-Mg alloy (AA2024-T3) is obtained for a wide temperature range from 85 to 250 degrees C and ageing durations from 1 to 10,000 h. For the first time, the appearance of equilibrium S-Al2CuMg phase is observed at 85 degrees C from 1000 h of ageing. Hardness values superposed with the precipitation map reveal that the maximum hardness for all studied temperatures is located at the frontier between S-phase + Guinier-Preston-Bagaryatski (GPB) zones and S-phase regions. (C) 2020 Elsevier B.V. All rights reserved.
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页数：6
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