Solid-state intermetallic phase tranformations in 3XXX aluminium alloys

被引：161

作者：

Alexander, DTL ^{[1
]}

Greer, AL ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

ACTA MATERIALIA | 2002年 / 50卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

aluminium; analytical electron microscopy; annealing; EELS; phase transformations;

D O I：

10.1016/S1359-6454(02)00085-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

During homogenisation of direct chill cast ingots of Al alloys for beverage-can bodies, the degree of transformation of Al-6(FeMn) phase to alpha-Al-(Fe,Mn)-Si phase is important for subsequent processing. The morphology of the transformation and the associated local composition changes are Studied using a range of electron microscope techniques. including energy-filtered transmission electron microscopy, convergent-beam electron diffraction and field-emission-gun scanning electron microscopy. Nucleation of the alpha-phase controls the rate of the transformation, which proceeds by eutectoid decomposition of the Al-6(Fe,Mn) phase into alpha-phase and aluminium solid solution. The transformation requires intake of silicon from the surrounding matrix; intake of manganese is not required but does occur on continued annealing. A basic description is given of the transformation kinetics. (C) 2002 Published by Elsevier Science Ltd on behalf of Acta Materialia Inc.

引用

页码：2571 / 2583

页数：13

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