RESPONSE OF SQUEEZE-CAST Mg-Y-Nd-Sc-Mn ALLOY TO ANNEALING WITH CONSTANT HEATING RATES

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10284864" target="_blank" >RIV/00216208:11320/14:10284864 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.metal2015.com/files/uploads/02/METAL2014%20content.pdf" target="_blank" >http://www.metal2015.com/files/uploads/02/METAL2014%20content.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

RESPONSE OF SQUEEZE-CAST Mg-Y-Nd-Sc-Mn ALLOY TO ANNEALING WITH CONSTANT HEATING RATES

Popis výsledku v původním jazyce

The MgYNdScMn alloy was squeeze-cast under a protective atmosphere. Precipitation reactions were studied by differential scanning calorimetry. Additionally the electrical resistometry and hardness measurements were performed. Transmission electron microscopy of specimens quenched from temperatures of significant thermal changes were used to identify microstructural processes responsible for these changes. The measurements revealed three exothermic effects connected to complex precipitation processes. Nodirect evidence was observed for the first effect. As this early stage is associated with small resistivity and hardness changes, we suppose a submicroscopic formation of a transient beta'' phase there. Precipitation of the transient beta' phase in theform of fine plates was observed at 270 oC. A weak thermal reaction corresponding to this process was detected only for heating rates of 1 and 5 K/min. The I' phase subsequently transforms into the stable I phase. Discs of the Mn2Sc phase

Název v anglickém jazyce

RESPONSE OF SQUEEZE-CAST Mg-Y-Nd-Sc-Mn ALLOY TO ANNEALING WITH CONSTANT HEATING RATES

Popis výsledku anglicky

The MgYNdScMn alloy was squeeze-cast under a protective atmosphere. Precipitation reactions were studied by differential scanning calorimetry. Additionally the electrical resistometry and hardness measurements were performed. Transmission electron microscopy of specimens quenched from temperatures of significant thermal changes were used to identify microstructural processes responsible for these changes. The measurements revealed three exothermic effects connected to complex precipitation processes. Nodirect evidence was observed for the first effect. As this early stage is associated with small resistivity and hardness changes, we suppose a submicroscopic formation of a transient beta'' phase there. Precipitation of the transient beta' phase in theform of fine plates was observed at 270 oC. A weak thermal reaction corresponding to this process was detected only for heating rates of 1 and 5 K/min. The I' phase subsequently transforms into the stable I phase. Discs of the Mn2Sc phase

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F10%2F0648" target="_blank" >GAP108/10/0648: Studium defektů v ikosaedrálních fázích v Mg slitinách</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2014

ISBN

978-80-87294-54-3

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

1288-1293

Název nakladatele

Tanger Ltd.

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

21. 5. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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