Influence of fibre reinforcement on the aging behaviour of an AlSi12CuMgNi alloy

被引：14

作者：

Bar, J

Gudladt, HJ ^{[1
]}

Illy, J

Lendvai, J

机构：

[1] Univ Bundeswehr Munchen, Inst Werkstoffkunde, D-85577 Neubiberg, Germany

[2] Eotvos Lorand Univ, Inst Gen Phys, H-1088 Budapest, Hungary

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1998年 / 248卷 / 1-2期

基金：

匈牙利科学研究基金会;

关键词：

MMC; fibre reinforcement; aging behaviour; microstructure;

D O I：

10.1016/S0921-5093(98)00489-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The aging behaviour of an AlSil2CuMgNi alloy reinforced with 20 vol.% Saffil and Fiberfrax, respectively, has been investigated by hardness measurements and differential scanning calorimetry. Taking the amount of fibres into account, the Saffil-reinforced alloy shows the same heat effect and hardness increase as the unreinforced alloy. In this composite the aging is accelerated, i.e. the maximum hardness is reached in about half the lime of the unreinforced alloy. The Fiberfrax-reinforced alloy shows no aging effects at all. This is caused by the formation of an interface layer around the fibres in which Mg is enriched and therefore the formation of Mg(2)Si precipitates in the matrix is suppressed. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：181 / 186

页数：6

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