Thermal Stability of Ultra-fine Grained AZ31 Magnesium Alloy Processed by Severe Plastic Deformation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10108731" target="_blank" >RIV/00216208:11320/11:10108731 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Thermal Stability of Ultra-fine Grained AZ31 Magnesium Alloy Processed by Severe Plastic Deformation

Popis výsledku v původním jazyce

The microstructure of ultra-fine grained (UFG) magnesium alloy AZ31 and its development with temperature were investigated. UFG specimens were prepared by a combined two-step severe plastic deformation process: the extrusion (EX) and the equal-channel angular pressing (ECAP). This combined process leads to microstructure refinement and enhanced microhardness. The microstructure evolution and mechanical properties were studied by light and scanning electron microscopy and microhardness measurements. Specimens were annealed for 1 hour at temperatures of 150, 200, 250, 300, 350, 400, 450, 500 oC. No changes were observed after annealing at 150 oC. The coarsening of a fine-grained structure at higher temperatures was accompanied by a gradual decrease of the microhardness. Microstructure of the specimens annealed at 450 oC and 500 oC is very non-homogeneous due to the secondary recrystallization.

Název v anglickém jazyce

Thermal Stability of Ultra-fine Grained AZ31 Magnesium Alloy Processed by Severe Plastic Deformation

Popis výsledku anglicky

The microstructure of ultra-fine grained (UFG) magnesium alloy AZ31 and its development with temperature were investigated. UFG specimens were prepared by a combined two-step severe plastic deformation process: the extrusion (EX) and the equal-channel angular pressing (ECAP). This combined process leads to microstructure refinement and enhanced microhardness. The microstructure evolution and mechanical properties were studied by light and scanning electron microscopy and microhardness measurements. Specimens were annealed for 1 hour at temperatures of 150, 200, 250, 300, 350, 400, 450, 500 oC. No changes were observed after annealing at 150 oC. The coarsening of a fine-grained structure at higher temperatures was accompanied by a gradual decrease of the microhardness. Microstructure of the specimens annealed at 450 oC and 500 oC is very non-homogeneous due to the secondary recrystallization.

Druh

D - Stať ve sborníku

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F09%2F0482" target="_blank" >GA106/09/0482: Mechanické vlastnosti a vývoj mikrostruktury ultrajemnozrnných hořčíkových slitin připravených různými technologiemi</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

WDS'11 Proceedings of Contributed Papers, Part I

ISBN

978-80-7378-184-2

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

132-135

Název nakladatele

Matfyzpress

Místo vydání

Praha, Czechia

Místo konání akce

Praha, Czechia

Datum konání akce

31. 5. 2011

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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