Misorientation effects on discontinuous precipitation in Al-Ag-Ga

被引：31

作者：

Hirth, S ^{[1
]}

Gottstein, G ^{[1
]}

机构：

[1] RWTH Aachen, Inst Met Kunde & Met Phys, D-52056 Aachen, Germany

来源：

ACTA MATERIALIA | 1998年 / 46卷 / 11期

关键词：

D O I：

10.1016/S1359-6454(98)00061-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aim of the work is to elucidate the mechanisms of discontinuous precipitation (DP) in an Al-2.8 at.% Ag-1 at.% Ga alloy, which has a relatively small coherency strain energy. Besides in situ TEM investigations, microtexture measurements were carried out using the EBSD technique. Characteristic misorientation relationships (25 degrees-40 degrees{< 115 > and < 332 >}) were found between grains with a propensity for discontinuous precipitation. This is attributed to the anisotropy of interface boundary energy, as first pointed out by Tu and Turnbull (Acta Metallurgica, 1967, 15, 369). The interpretation is supported by particle-boundary orientation relationships revealed in the TEM at the incipient stages of DP. (C) 1998 Acta Metallurgica Inc.

引用

页码：3975 / 3984

页数：10

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