Interface chemistry in aluminium alloy castings reinforced with iron base inserts

被引：85

作者：

Viala, JC ^{[1
]}

Peronnet, M ^{[1
]}

Barbeau, F ^{[1
]}

Bosselet, F ^{[1
]}

Bouix, J ^{[1
]}

机构：

[1] Univ Lyon 1, UMR CNRS 5615, Lab Mulimat & Interfaces, F-69622 Villeurbanne, France

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2002年 / 33卷 / 10期

关键词：

interface; casting; joining;

D O I：

10.1016/S1359-835X(02)00158-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bimetallic automotive components consisting of an Al-Si light alloy reinforced with a cast iron insert have been manufactured by gravity die moulding. Special precautions have been taken to ensure a uniform wetting of the insert by the liquid light alloy. Under these conditions, three intermetallic compounds are formed at the insert/alloy interface: eta (Al5Fe2), tau5 (Al7.4Fe2Si) and tau6 (Al4.5FeSi). Upon subsequent heat-treatment, tau2 (Al5Fe2Si2) and tau10 (Al12Fe5Si3) also appear. Growth of these compounds is discussed in terms of thermodynamics, kinetics and reaction mechanism in the Al-Fe and Al-Fe-Si systems. The effect of these chemical changes on the mechanical properties of the insert/alloy joint will be examined. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1417 / 1420

页数：4

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