Thermal analysis of FeAl intermetallic compound sintered at heating rate of 300 °C/min

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43919752" target="_blank" >RIV/60461373:22310/19:43919752 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0925838819342240?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838819342240?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2019.152978" target="_blank" >10.1016/j.jallcom.2019.152978</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal analysis of FeAl intermetallic compound sintered at heating rate of 300 °C/min

Popis výsledku v původním jazyce

Only differential thermal analysis at low heating rates or mathematical modelling have been used to determine Fe–Al phase formation reactions up to this day. In this work, Self-propagating High-temperature Synthesis high-speed reaction was analysed during extremely high heating rates using scanning electron microscope with energy dispersive spectroscopy and X-ray diffraction in this work. Samples, whose chemical composition corresponded to FeAl phase, were sintered at heating rate of 300 °C/min, the highest heating rate applied so far. The course of heating was observed by optical pyrometer with sampling rate of 0.02 s. Pre-combustion peak (diffusion stage) was identified in the alloy prior steep combustion peak corresponding to SHS reaction itself. Accordingly to the temperature development, a FeAl phase formed initially allowing to react with aluminium and forming Fe2Al5 phase. Furthermore, the later mentioned phase partially reacted with aluminium resulting in a presence of metastable FeAl3 phase. Resulted microstructure was composed of only FeAl phase. This is completely reverse order of phase formation as was presented in previous studies focusing on lower heating rates where Fe2Al5 formed first during diffusion stage followed by the formation of FeAl at SHS reaction.

Název v anglickém jazyce

Thermal analysis of FeAl intermetallic compound sintered at heating rate of 300 °C/min

Popis výsledku anglicky

Only differential thermal analysis at low heating rates or mathematical modelling have been used to determine Fe–Al phase formation reactions up to this day. In this work, Self-propagating High-temperature Synthesis high-speed reaction was analysed during extremely high heating rates using scanning electron microscope with energy dispersive spectroscopy and X-ray diffraction in this work. Samples, whose chemical composition corresponded to FeAl phase, were sintered at heating rate of 300 °C/min, the highest heating rate applied so far. The course of heating was observed by optical pyrometer with sampling rate of 0.02 s. Pre-combustion peak (diffusion stage) was identified in the alloy prior steep combustion peak corresponding to SHS reaction itself. Accordingly to the temperature development, a FeAl phase formed initially allowing to react with aluminium and forming Fe2Al5 phase. Furthermore, the later mentioned phase partially reacted with aluminium resulting in a presence of metastable FeAl3 phase. Resulted microstructure was composed of only FeAl phase. This is completely reverse order of phase formation as was presented in previous studies focusing on lower heating rates where Fe2Al5 formed first during diffusion stage followed by the formation of FeAl at SHS reaction.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA17-07559S" target="_blank" >GA17-07559S: Zpracování inovativních intermetalik na bázi železa mechanickým legováním a slinováním v plazmatu</a><br>

Návaznosti

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

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

819

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

4

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85077740858