Interface formation in aluminium-aluminium compound casting

被引：113
作者：
Papis, K. J. M. [1 ]
Hallstedt, B. [2 ]
Loeffler, J. F. [1 ]
Uggowitzer, P. J. [1 ]
机构：
[1] ETH, Dept Mat, Lab Metal Phys & Technol, CH-8093 Zurich, Switzerland
[2] Rhein Westfal TH Aachen, D-52074 Aachen, Germany
来源：
ACTA MATERIALIA | 2008年 / 56卷 / 13期
关键词：
casting; aluminium alloys; wetting; diffusion bonding; interface structure;
D O I：
10.1016/j.actamat.2008.02.042
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An inherent difficulty in joining aluminium is its natural oxide layer, which results in insufficient wettability. In this project we describe a "compound casting" process where an alummium melt is cast onto a solid aluminium substrate. Both the solid substrate and the melt contain various alloying elements (Mg in the substrate; Cu, Si, and Zn in the melt). Compounds with flawless and continuously metallic interfaces can be produced successfully by replacing the oxide layer with a zinc layer. Diffusion of alloying elements leads to heat-treatable microstructures in the vicinity of the joining interfaces. The experimental results coincide well with the diffusion zone extensions simulated by means of DICTRA calculations. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：3036 / 3043
页数：8
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