Kinetic study of static recrystallization in an Fe–Al–O ultra-fine-grained nanocomposite

Bártková, Denisa; Šmíd, Miroslav; Mašek, B.; Svoboda, Jiří; Šiška, Filip

doi:https://dx.doi.org/10.1080/09500839.2017.1378445

Number of the records: 1

Kinetic study of static recrystallization in an Fe–Al–O ultra-fine-grained nanocomposite

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SYSNO ASEP	0482161
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Kinetic study of static recrystallization in an Fe–Al–O ultra-fine-grained nanocomposite
Author(s)	Bártková, Denisa (UFM-A) Šmíd, Miroslav (UFM-A)_{RID, ORCID} Mašek, B. (CZ) Svoboda, Jiří (UFM-A)_{RID, ORCID} Šiška, Filip (UFM-A)_{RID, ORCID}
Number of authors	5
Source Title	Philosophical Magazine Letters. - : Taylor & Francis - ISSN 0950-0839 Roč. 97, č. 10 (2017), s. 379-385
Number of pages	7 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	recrystallization ; dislocation structures ; nanoscale precipitates ; microstructure ; abrupt grain coarsening
Subject RIV	JL - Materials Fatigue, Friction Mechanics
OECD category	Audio engineering, reliability analysis
R&D Projects	GJ15-21292Y GA ČR - Czech Science Foundation (CSF)
	LM2015069 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UFM-A - RVO:68081723
UT WOS	000419398100001
EID SCOPUS	85029901914
DOI	10.1080/09500839.2017.1378445
Annotation	A nearly abrupt coarsening of grains is observed in a newly developed Fe–Al–O ultra-fine-grained nanocomposite with a significant volume fraction (4%) of alumina nano-precipitates. The microstructure of the alloy was analysed in different states (as-received and annealed) by means of scanning electron microscopy, transmission electron microscopy (TEM) and hardness. The initial grain size 150–200 nm increases up to 50 micrometers during annealing 1000 °C/8 h and thereafter demonstrates saturation. A linear correlation between volume fraction of coarse grains and hardness was found. It was identified by TEM that alumina nano-precipitates stabilize the dislocation microstructure against recovery very effectively and the grain coarsening is due to fast growth of very few dislocation free grains. Thus, the observed grain coarsening has the attributes of static recrystallization.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2018

Number of the records: 1