Characterization of AZ91 magnesium alloy processed by cyclic contraction/expansion extrusion using the experimental and micromechanical cellular automaton finite element approach

The feasibility to fabricate ultra-fine-grained AZ91 Mg alloy is investigated with a newly presented severe plastic deformation method entitled cyclic contraction/expansion extrusion. In this method, an initial cylindrical AZ91 Mg billet is placed into a die and the moving punch causes the large def...

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Veröffentlicht in:	Proceedings of the Institution of Mechanical Engineers. Part L, Journal of materials, design and applications Journal of materials, design and applications, 2020-11, Vol.234 (11), p.1417-1430
Hauptverfasser:	Hatami Sadr, M, Jafarzadeh, H
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloys Cellular automata Deformation effects Dislocation density Dynamic recrystallization Elongation Evolution Extrusion billets Extrusion dies Finite element method Grain refinement Grain size Magnesium base alloys Mathematical analysis Mechanical properties Microstructure Plastic deformation Plastic foam Post-production processing Tensile tests Ultimate tensile strength
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