Isothermal oxidation behavior of experimental Ti-Al-Si alloys at 700 °C in air

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F17%3APU121345" target="_blank" >RIV/00216305:26620/17:PU121345 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jallcom.2016.10.044" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2016.10.044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2016.10.044" target="_blank" >10.1016/j.jallcom.2016.10.044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Isothermal oxidation behavior of experimental Ti-Al-Si alloys at 700 °C in air

Popis výsledku v původním jazyce

In the present work the oxidation kinetics of a series of experimental TiAlSi based alloys, additionally alloyed by zirconium and tin, was studied upon isothermal exposure at 700 C in ambient air and compared with that of a commercially available Ti6242 alloy. Examinations of the oxide scale microstructure, its phase composition and crystal morphology along with the measurements of the alpha-case thickness were performed in order to elucidate the oxidation mechanism of TiAlSi based alloys. The oxidation rates of the experimental alloys obeyed a parabolic relationship and were 1.5e2 times lower than those of the reference Ti6242 alloy. The alloying of the base Ti6Al1.4Si alloy with zirconium strongly reduced its oxidation rate, while the effect of tin addition appeared to be slightly deleterious. The zirconium addition reduced the thickness of the oxide scale and hindered recrystallization of the rutile crystals in the surface oxide layer. At the same time, the additional alloying with tin had practically no effect on the size of rutile crystals. The thickness of alpha-case was found to depend on the oxidation dwell time and followed a parabolic relationship. The most noticeable effect in reducing the alpha-case thickness was provided by zirconium addition, while the effect of additional alloying with tin on alphacase was slightly unfavorable.

Název v anglickém jazyce

Isothermal oxidation behavior of experimental Ti-Al-Si alloys at 700 °C in air

Popis výsledku anglicky

In the present work the oxidation kinetics of a series of experimental TiAlSi based alloys, additionally alloyed by zirconium and tin, was studied upon isothermal exposure at 700 C in ambient air and compared with that of a commercially available Ti6242 alloy. Examinations of the oxide scale microstructure, its phase composition and crystal morphology along with the measurements of the alpha-case thickness were performed in order to elucidate the oxidation mechanism of TiAlSi based alloys. The oxidation rates of the experimental alloys obeyed a parabolic relationship and were 1.5e2 times lower than those of the reference Ti6242 alloy. The alloying of the base Ti6Al1.4Si alloy with zirconium strongly reduced its oxidation rate, while the effect of tin addition appeared to be slightly deleterious. The zirconium addition reduced the thickness of the oxide scale and hindered recrystallization of the rutile crystals in the surface oxide layer. At the same time, the additional alloying with tin had practically no effect on the size of rutile crystals. The thickness of alpha-case was found to depend on the oxidation dwell time and followed a parabolic relationship. The most noticeable effect in reducing the alpha-case thickness was provided by zirconium addition, while the effect of additional alloying with tin on alphacase was slightly unfavorable.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

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

Rok uplatnění

2017

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

1873-4669

Svazek periodika

694

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

1098-1108

Kód UT WoS článku

000390622900142

EID výsledku v databázi Scopus

2-s2.0-84993123060