Microstructure of TiAl-Nb alloys after thermal hydrogen processing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F12%3A86084202" target="_blank" >RIV/61989100:27360/12:86084202 - 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

Microstructure of TiAl-Nb alloys after thermal hydrogen processing

Popis výsledku v původním jazyce

Study of hydrogen effect on microstructure change after different heat treatment under argon or hydrogen was carried out. Experimental alloys Ti45Al10Nb and Ti40Al15Nb were prepared from TiNb master alloy (55/45 mass %) and pieces of elemental Al and Tiusing plasma melting. Ingots were vacuum induction remelted. Both as-cast alloys were annealed at 700°C for 8 hours under argon or hydrogen in order to compare influence of annealing atmosphere on microstructure changes. Heat treatment at 1300°C for 4 hours in flowing hydrogen followed by quenching in water from 700°C allowed to observe influence of hydrogen as phase-stabilizer in the microstructure. Based on microhardness values the influence of various parameters, such as Nb content, presence of hydrogen in the structure or thermal history of the alloys on the microstructure feature, was evaluated. The lamellar microstructure (a2 + g) was found for both alloys in as-cast condition. Hydrogen effect on increasing microhardness was obser

Název v anglickém jazyce

Microstructure of TiAl-Nb alloys after thermal hydrogen processing

Popis výsledku anglicky

Study of hydrogen effect on microstructure change after different heat treatment under argon or hydrogen was carried out. Experimental alloys Ti45Al10Nb and Ti40Al15Nb were prepared from TiNb master alloy (55/45 mass %) and pieces of elemental Al and Tiusing plasma melting. Ingots were vacuum induction remelted. Both as-cast alloys were annealed at 700°C for 8 hours under argon or hydrogen in order to compare influence of annealing atmosphere on microstructure changes. Heat treatment at 1300°C for 4 hours in flowing hydrogen followed by quenching in water from 700°C allowed to observe influence of hydrogen as phase-stabilizer in the microstructure. Based on microhardness values the influence of various parameters, such as Nb content, presence of hydrogen in the structure or thermal history of the alloys on the microstructure feature, was evaluated. The lamellar microstructure (a2 + g) was found for both alloys in as-cast condition. Hydrogen effect on increasing microhardness was obser

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/ED0040%2F01%2F01" target="_blank" >ED0040/01/01: Regionální materiálově technologické výzkumné centrum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2012 : 21st International Conference on Metallurgy and Materials : conference proceedings

ISBN

978-80-87294-31-4

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

1485-1490

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

23. 5. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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