MICROSTRUCTURE AND MECHANICAL-PROPERTIES OF A 2091 ALLI ALLOY .1. MICROSTRUCTURE INVESTIGATED BY SAXS AND TEM

被引：26

作者：

GOMIERO, P ^{[1
]}

LIVET, F ^{[1
]}

BRECHET, Y ^{[1
]}

LOUCHET, F ^{[1
]}

机构：

[1] ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE, THERMODYNAM & PHYSICOCHIM MET LAB, F-38402 ST MARTIN DHERES, FRANCE

来源：

ACTA METALLURGICA ET MATERIALIA | 1992年 / 40卷 / 04期

关键词：

D O I：

10.1016/0956-7151(92)90027-C

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure of the 2091 alloy (Al-Li-Cu-Mg-Zr) alloy has been studied and compared to that of two simpler Al-Li and Al-Cu-Mg alloys. The SAXS, in situ SAXS and TEM techniques have been used for heat treatments at room temperature and at 150-degrees-C. The time evolution of the size and of the volume fraction of the delta' precipitates and of the Cu-rich GPB zones have been determined. The delta' precipitates are shown to follow a classical Lifschitz-Slyosov-Wagner law. Their interfacial energy has been estimated. S and S' precipitates have also been characterized, respectively on grain boundaries and on helical dislocations, by TEM.

引用

页码：847 / 855

页数：9

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