Interface Reactions of Al and Binary Al-Alloys on Mild Steel Substrates in Controlled Atmosphere

Werner Fragner; Bruno Zberg; Roman Sonnleitner; Peter J. Uggowitzer; Jörg F. Löffler

doi:10.4028/www.scientific.net/MSF.519-521.1157

Paper Titles

Mechanical and Corrosion Behaviour of the 2139 Aluminium-Copper Alloy Welded by the Friction Stir Welding Using the Bobbin Tool Technique
p.1131

Laser and Hybrid Laser-MIG Welding of 6.35 and 12.7mm Thick Aluminium Aerospace Alloy
p.1139

Interfacial Microstructure of Magnetic Pressure Seam Welded Al-Fe, Al-Ni and Al-Cu Lap Joints
p.1145

Liquid Film Migration in Aluminium Brazing Sheet?
p.1151

Interface Reactions of Al and Binary Al-Alloys on Mild Steel Substrates in Controlled Atmosphere
p.1157

Effect of Welding Parameters on Mechanical and Microstructural Properties of Dissimilar AA6082-AA2024 Joints Produced by Friction Stir Welding
p.1163

Epitaxial Grain Growth during Surface Modification of Friction Stir Welded Aerospace Alloys by a Pulsed Laser System
p.1169

Creep and Creep Rupture of FSW Joints of 5052 Aluminium Alloy Plates
p.1175

Microstructural Evolution in AA7449 Plate Subject to Friction Stir Welding and Post Weld Heat Treatment
p.1181

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Interface Reactions of Al and Binary Al-Alloys on Mild Steel Substrates in Controlled Atmosphere

Abstract:

To meet the requirements of weight-saving and low-cost production of components for future transport vehicles, the concept of multi-material mix is of increasing importance. In this context aluminum-iron compounds produced by means of compound casting are considered to be of particular importance. An essential and critical aspect of such compound castings is the formation of intermetallic phases (IMP) at the Al-Fe interface. Both the nature and the kinetics of potential IMPs are not well understood and require a systematic investigation. In this paper we document the interface formation of pure Al and binary Al-alloys on a mild steel substrate by means of isothermal wetting experiments. Tests were carried out employing the sessile droplet method in a controlled atmosphere. Using pure Al and Al7Si, Al7Cu, and Al7Zn alloys the interface reactions were investigated by quantitative metallography (LOM, SEM/EDX). Special attention was paid to the influence of the alloying elements on the type and sequence of IMPs at the interface.