Aluminium is widely valued for its light weight, strength, durability, and exceptional recyclability—making it a cornerstone material for sustainable development and circular economy strategies. Unlike many materials, aluminium can be recycled repeatedly without loss of properties, enabling closed-loop material flows for green products across sectors such as construction, automotive, aerospace, offshore structures, and renewable energy.
 

his session will explore the evolving challenges and opportunities in recycled aluminium alloys, focusing on how increased alloying element concentrations from multiple recycling loops influence mechanical properties (strength, ductility, impact toughness), damage tolerance (fracture, fatigue, corrosion-fatigue), and environmental resistance (corrosion behaviour). Furthermore, the session will address how these compositional changes affect manufacturing processes, including casting, forming, extrusion, and joining technologies, and their implications for structural integrity and lifecycle performance.

Key topics include:

• Effect of impurity build-up and alloying variations on microstructure and performance.
• Corrosion, fatigue, and fracture behaviour of recycled aluminium alloys.
• Impact toughness and damage tolerance in demanding applications.Processing challenges: casting defects, formability, extrusion quality, and weldability.
• Recycling-oriented alloy design and optimization strategies for high-performance applications."