On the formation of intermetallics in Fe?Al system ? An in situ XRD study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F13%3A00207540" target="_blank" >RIV/68407700:21220/13:00207540 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/13:43894979 RIV/60461373:22310/13:43894979

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0966979512003196" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0966979512003196</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.intermet.2012.08.020" target="_blank" >10.1016/j.intermet.2012.08.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the formation of intermetallics in Fe?Al system ? An in situ XRD study

Popis výsledku v původním jazyce

Self-propagating high-temperature synthesis (SHS) was previously proposed as alternative preparation route for Fe?Al intermetallics. However, this process was not optimized and the mechanism and kinetics of the phases' formation was not fully clarified up to current days. In this work, in situ high energy X-ray diffraction analysis was carried out during the SHS process and the mechanism of the intermetallic' formation in FeAl25 powder mixture was described during rapid heating and isothermal annealingat 800 °C as well as during a slower continuous heating to 900 °C. During slower heating, the formation of Fe2Al5 and FeAl2 intermetallics starts below the melting point of aluminium. When the heating rate is high, intermetallics are created after melting of aluminium. During long-term annealing, all of the phases can be transformed to FeAl phase when fine powders were applied. Detailed mechanism is proposed in this paper and kinetics of the intermetallics' formation is described.

Název v anglickém jazyce

On the formation of intermetallics in Fe?Al system ? An in situ XRD study

Popis výsledku anglicky

Self-propagating high-temperature synthesis (SHS) was previously proposed as alternative preparation route for Fe?Al intermetallics. However, this process was not optimized and the mechanism and kinetics of the phases' formation was not fully clarified up to current days. In this work, in situ high energy X-ray diffraction analysis was carried out during the SHS process and the mechanism of the intermetallic' formation in FeAl25 powder mixture was described during rapid heating and isothermal annealingat 800 °C as well as during a slower continuous heating to 900 °C. During slower heating, the formation of Fe2Al5 and FeAl2 intermetallics starts below the melting point of aluminium. When the heating rate is high, intermetallics are created after melting of aluminium. During long-term annealing, all of the phases can be transformed to FeAl phase when fine powders were applied. Detailed mechanism is proposed in this paper and kinetics of the intermetallics' formation is described.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/KAN300100801" target="_blank" >KAN300100801: Multifunkční objemové kovové materiály s nanokrystalickou a ultrajemnozrnnou strukturou</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Intermetallics

ISSN

0966-9795

e-ISSN

—

Svazek periodika

—

Číslo periodika v rámci svazku

32

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

127-136

Kód UT WoS článku

000313145500019

EID výsledku v databázi Scopus

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