Atomic scale imaging and analysis of T' precipitates in Al-Mg-Zn alloys

被引：67

作者：

Bigot, A ^{[1
]}

Auger, P ^{[1
]}

Chambreland, S ^{[1
]}

Blavette, D ^{[1
]}

Reeves, A ^{[1
]}

机构：

[1] PECHINEY CTR RECH VOREPPE,F-38340 VOREPPE,FRANCE

来源：

MICROSCOPY MICROANALYSIS MICROSTRUCTURES | 1997年 / 8卷 / 02期

关键词：

D O I：

10.1051/mmm:1997109

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

The composition, morphology and Volume fraction of the metastable T' phase formed in an industrial Al-4.91wt%Mg-3.20wt%Zn alloy have been investigated using the tomographic atom probe. Roughly globular and sometimes elongated T' precipitates are present in the alloy aged at 140 degrees C for 24 hours after solution heat treatment and water quenching, with a number density of 1.8 x 10(17) cm(-3). The volume fraction of the phase is close to 4.5%. The T' precipitates were found to have an average composition of 37.5 at% Mg, 36.5 at% Al and 26 at% Zn, which is, within experimental error, identical to that of the stable T phase Mg-32(Al,Zn)(49).

引用

页码：103 / 113

页数：11

共 10 条

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[2]

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