High-temperature oxidation of Ti-Al-Si alloys prepared by powder metallurgy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43919024" target="_blank" >RIV/60461373:22310/19:43919024 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0925838819331342?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838819331342?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2019.151895" target="_blank" >10.1016/j.jallcom.2019.151895</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High-temperature oxidation of Ti-Al-Si alloys prepared by powder metallurgy

Popis výsledku v původním jazyce

The Ti-Al-Si alloys are promising materials for high-temperature use in automotive, aerospace or cosmic industry. The main advantages of these alloys are their low density (approximately 4 g/cm(3)), good oxidation resistance, and mechanical properties at elevated temperatures. Addition of silicon into the Ti-Al alloys improves the high-temperature behaviour and improves compactness and adhesion of the oxide layer. The resistance against oxidation can be effectively improved also by an appropriate technology of preparation. In this work, the high-temperature cyclic and isothermal oxidation resistance of the Ti-Al-Si alloys are described. The effect of powder metallurgy production route (reactive sintering, mechanical alloying, Spark Plasma Sintering) on high-temperature behaviour was compared. Cyclic and isothermal oxidation tests were carried out at 800 degrees C and 1000 degrees C, well above the air-operating limit for TiAl. It was confirmed, that the Ti-Al-Si alloys are resistant at temperature 800 degrees C, where only very thin oxide layer was formed. Mechanical alloying followed by Spark Plasma Sintering improved the high-temperature behaviour of these alloys, the oxide layer was even thinner. (C) 2019 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

High-temperature oxidation of Ti-Al-Si alloys prepared by powder metallurgy

Popis výsledku anglicky

The Ti-Al-Si alloys are promising materials for high-temperature use in automotive, aerospace or cosmic industry. The main advantages of these alloys are their low density (approximately 4 g/cm(3)), good oxidation resistance, and mechanical properties at elevated temperatures. Addition of silicon into the Ti-Al alloys improves the high-temperature behaviour and improves compactness and adhesion of the oxide layer. The resistance against oxidation can be effectively improved also by an appropriate technology of preparation. In this work, the high-temperature cyclic and isothermal oxidation resistance of the Ti-Al-Si alloys are described. The effect of powder metallurgy production route (reactive sintering, mechanical alloying, Spark Plasma Sintering) on high-temperature behaviour was compared. Cyclic and isothermal oxidation tests were carried out at 800 degrees C and 1000 degrees C, well above the air-operating limit for TiAl. It was confirmed, that the Ti-Al-Si alloys are resistant at temperature 800 degrees C, where only very thin oxide layer was formed. Mechanical alloying followed by Spark Plasma Sintering improved the high-temperature behaviour of these alloys, the oxide layer was even thinner. (C) 2019 Elsevier B.V. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

810

Číslo periodika v rámci svazku

august

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

—

Kód UT WoS článku

000486596000061

EID výsledku v databázi Scopus

2-s2.0-85070971416