HEAT TREATMENT AND MECHANICAL PROPERTIES OF TiAl ALLOY WITH HIGH Nb CONTENT

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F09%3APU110110" target="_blank" >RIV/00216305:26210/09:PU110110 - 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

HEAT TREATMENT AND MECHANICAL PROPERTIES OF TiAl ALLOY WITH HIGH Nb CONTENT

Popis výsledku v původním jazyce

The influence of the fully lamellar morphology produced by heat treatment on the room temperature mechanical properties of near gamma-Ti-44Al-8Nb intermetallic was investigated. Particularly, the effect of improved microstructural control on compressionresistance is demonstrated using the step cooling from the alfa single phase, including combination of furnace cooling and air cooling. The differential thermal analysis was used to determine the phase transformation temperatures as the alfa transus andthe eutectic temperature. The heat treatment used, consisting in different cooling from alfa region, remould the as-cast nearly lamellar structure to the fully lamellar uniform structure and decreased the average grain size to the half. The furnace cooling from the alfa region to 1 315 C and the following air cooling result in higher yield stress and lower plasticity due the very thin lamellar thickness and planar grain boundary. While higher plasticity and lower yield stress are obtaine

Název v anglickém jazyce

HEAT TREATMENT AND MECHANICAL PROPERTIES OF TiAl ALLOY WITH HIGH Nb CONTENT

Popis výsledku anglicky

The influence of the fully lamellar morphology produced by heat treatment on the room temperature mechanical properties of near gamma-Ti-44Al-8Nb intermetallic was investigated. Particularly, the effect of improved microstructural control on compressionresistance is demonstrated using the step cooling from the alfa single phase, including combination of furnace cooling and air cooling. The differential thermal analysis was used to determine the phase transformation temperatures as the alfa transus andthe eutectic temperature. The heat treatment used, consisting in different cooling from alfa region, remould the as-cast nearly lamellar structure to the fully lamellar uniform structure and decreased the average grain size to the half. The furnace cooling from the alfa region to 1 315 C and the following air cooling result in higher yield stress and lower plasticity due the very thin lamellar thickness and planar grain boundary. While higher plasticity and lower yield stress are obtaine

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

Materials Engineering, Vol. 16, 2009

ISBN

978-80-87294-39-0

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

13-18

Název nakladatele

Materials Engineering

Místo vydání

Žilina

Místo konání akce

Tatranská Lomnica

Datum konání akce

2. 9. 2009

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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