Image icon  Resistance spot weld in T3

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Description: Macrograph of a resistance spot weld made in two plates of 1,5 mm thickness. T3 - solution heat treatment, cold working and natural ageing. AA2024-T3 RSW x40 Keller's reagent interferential contrast Base material characterised by elongated, plastically deformed grains. Presence of dendritic grains in the weld. The line on the left is the original plates separation line. The two short lines on the right (inside the weld) are solidification cracks.
Keywords: aluminium • copper
Categories: Science approaches > Microstructure
Materials > Metals & alloys > Aluminium & alloys
Processes > Joining > Welding, brazing & soldering
Processes > Thermal treatments > Ageing
Testing, analysis & experimentation > Metallography
Scale > Micro
Created by: DoITPoMS, University of Cambridge
J Adamowski, Department of Production Engineering, Thermoenergetics and Mathematical Models, University of Genoa, Italy
Published by: DoITPoMS, University of Cambridge
License: This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales).
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Date created: 04 July 2005
Date added: 21 August 2009
Resource ID: 1866