The Paton Welding Journal, 2012, №04



2012 №04 (04)

2012 №04 (06)

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The Paton Welding Journal, 2012, #4, 20-30 pages  

EXPERIMENTAL REVIEW OF THE WELDING METALLURGY OF HIGH-STRENGTH ALUMINIUM ALLOY 7025-T6

M. OLABODE, P. KAH and J. MARTIKAINEN

Lappeenranta University of Technology, Lappeenranta, Finland
 
 
Abstract
In this review, various aspects such as designations, definitions, applications, properties and weldability of high-strength aluminium alloys are presented. The effect of heat input on microstructure and hardness of the 7025-T6 alloy welded joints is studied. It is shown that at constant heat input the welding speed had no effect on the weld hardness. Thus, limiting heat input in welds on high-strength aluminium alloys is important to preserve their mechanical properties.
 
 
Keywords: high-strength aluminium alloys, alloy 7025-T6, pulsed MIG welding, heat input, Vickers hardness, welding metallurgy
 
 
Received:                03.10.11
Published:               28.04.12
 
 
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