Materials â€“ Microstructure and properties

Version 2002 © European Aluminium Association ([email protected]) 1 Materials – Microstructure and properties Table of contents 4 Microstructure and properties ..................................................................................................2 4.1 Properties & microstructure determine the behaviour of automotive aluminium .............2 4.2 Mechanical behaviour ......................................................................................................3 4.2.1 Mechanical behaviour: elastic behaviour, plastic behaviour and fracture behaviour3 4.2.2 Elastic behaviour.......................................................................................................5 4.2.3 Plastic behaviour.......................................................................................................7 4.2.4 Fracture behaviour ....................................................................................................8 4.2.5 Effects of microstructure on ductility and fracture...................................................10 4.2.6 Mechanical properties at elevated temperatures....................................................11 4.2.7 Fatigue behaviour ...................................................................................................12 4.3 Physical properties .........................................................................................................13 4.3.1 Physical properties of 99.99% pure aluminium ......................................................13 4.3.2 Physical properties of wrought alloys and casting alloys .......................................14 4.4 Corrosion behaviour .......................................................................................................15 4.4.1 Basic phenomena of corrosion of aluminium materials ..........................................15 4.4.2 Protective oxide film ................................................................................................16 4.4.3 Electrochemical nature of corrosion .......................................................................18 4.4.4 Influence of alloy composition.................................................................................19 4.4.5 Pitting corrosion ......................................................................................................20 4.4.6 Intergranular corrosion............................................................................................21 4.4.7 Stress corrosion cracking .......................................................................................22 4.4.8 Exfoliation corrosion ...............................................................................................23 4.4.9 Filiform corrosion ....................................................................................................24 4.4.10 Galvanic corrosion ................................................................................................25 4.4.11 Crevice corrosion ..................................................................................................28 4.4.12 Corrosion fatigue ..................................................................................................29

Materials â€“ Microstructure and properties

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