Reverse tension/compression asymmetry of a Mg–Y–Zn alloys containing LPSO phases

Reverse tension/compression asymmetry of a Mg–Y–Zn alloys containing LPSO phases

Room temperature mechanical behavior of extruded Mg–Y–Zn alloys with varying fractions of LPSO phase was studied in tension and compression along the extrusion direction. The microstructure is characterised by elongated LPSO fibers along the extrusion direction within the magnesium matrix. Moreover,...

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Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2015-10, Vol.647, p.287-293
Hauptverfasser: Garces, G., Perez, P., Cabeza, S., Lin, H.K., Kim, S., Gan, W., Adeva, P.
Format: Artikel
Sprache:eng
Schlagworte:
Alloys
Compressing
Extrusion
Grains
LPSO
Magnesium
Magnesium alloy
Magnesium base alloys
Mechanical characterization
Phases
Plasticity
Thermomechanical processing
Volume fraction
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Zusammenfassung:Room temperature mechanical behavior of extruded Mg–Y–Zn alloys with varying fractions of LPSO phase was studied in tension and compression along the extrusion direction. The microstructure is characterised by elongated LPSO fibers along the extrusion direction within the magnesium matrix. Moreover, the magnesium matrix presents a bimodal grain structure with dynamically-recrystallized grains and deformed, elongated grains with the basal plane parallel to the extrusion direction. The beginning of plasticity depends on the volume fraction of deformed and DRX grains. Alloys with low volume fraction of LPSO phase (
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2015.09.003