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

页码：104 / 107

页数：4

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