Structural evolution of the 2024 aluminium-copper-magnesium-based alloy by positron annihilation spectroscopy and transmission electron microscopy

被引：10

作者：

Biasini, M

de Diego, N

Del Rio, J

Dupasquier, A

Valli, M

Abis, S

机构：

[1] ENEA, I-40129 Bologna, Italy

[2] Univ Complutense Madrid, Dept Fis Mat, E-28040 Madrid, Spain

[3] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy

[4] Fiocco Engn, I-21018 Sesto Calende VA, Italy

来源：

POSITRON ANNIHILATION: ICPA-11 - PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION, KANSAS CITY, MISSOURI, USA, MAY 1997 | 1997年 / 255-2卷

关键词：

aluminium alloys; Guinier-Preston zones; precipitation;

D O I：

10.4028/www.scientific.net/MSF.255-257.442

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural transformations occurring artificial aging of the 2024 Al-Cu-Mg-based alloy have been studied by positron lifetime and Doppler technique and by transmission electron spectroscopy (TEM), The results show; af the presence of an undissolved fraction of Cu at any stage of the thermal treatment b)partial dissolution during the initial stages of artificial aging of the Guinier-Preston zones formed during RT pre-aging; c) transformation of GP zones into S' particles; d) heterogeneous nucleation of precipitates.

引用

页码：442 / 444

页数：3

共 9 条

[1] POSITRON-ANNIHILATION STUDY OF ETA' PRECIPITATION KINETICS IN AN ALUMINUM-ALLOY [J].