In situ natural ageing of Al-Cu-(Mg) alloys: The effect of In and Sn on the very early stages of decomposition

被引：23
|
作者：
Lotter, Frank [1 ]
Petschke, Danny [1 ]
De Geuser, Frederic [2 ]
Elsayed, Mohamed [3 ,4 ]
Sextl, Gerhard [1 ,5 ]
Staab, Torsten E. M. [1 ]
机构：
[1] Univ Wurzburg, Dept Chem, LCTM, Roentgenring 11, D-97070 Wurzburg, Germany
[2] Univ Grenoble Alpes, CNRS, Grenoble INP, SIMAP, F-38000 Grenoble, France
[3] Martin Luther Univ Halle Wittenberg, Dept Phys, D-06120 Halle, Germany
[4] Menia Univ, Dept Phys, Fac Sci, Al Minya 61519, Egypt
[5] Fraunhofer ISC, Neunerpl 2, D-97082 Wurzburg, Germany
来源：
SCRIPTA MATERIALIA | 2019年 / 168卷
关键词：
Al-Cu alloys; Al-Cu-Mg alloys; Trace elements; Clustering; SAXS; AL-CU ALLOYS; SMALL-ANGLE; MG; PRECIPITATION; EVOLUTION; KINETICS; CLUSTERS; MODEL;
D O I：
10.1016/j.scriptamat.2019.04.031
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of trace elements (0.01 at.% In/Sn) on the decomposition process of Al-Cu-(Mg) alloys during the very early stages of natural ageing has been investigated in situ by small angle X-ray scattering supported with differential scanning calorimetry and hardness measurements. In the binary Al-Cu alloy quenched-in vacancies are bound to In or Sn, resulting in a suppressed Cu clustering process. In Al-Cu-Mg room temperature hardening occurs much faster due to Mg entering the clusters. However, the influence of In or Sn is negligible. Cu and Mg possibly form complexes with quenched-in vacancies before they can reach a trace element atom. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：104 / 107
页数：4
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