Detail publikace

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

BÁRTKOVÁ, D. ŠMÍD, M. MAŠEK, B. ŠIŠKA, F.

Anglický název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

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 150-200nm increases up to 50m during annealing 1000 degrees C/8h 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.

Anglický abstrakt

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 150-200nm increases up to 50m during annealing 1000 degrees C/8h 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.

Klíčová slova anglicky

Recrystallization; dislocation structures; nanoscale precipitates; microstructure; abrupt grain coarsening

Vydáno

01.02.2017

Nakladatel

TAYLOR & FRANCIS LTD

Místo

ABINGDON

ISSN

0950-0839

Ročník

97

Číslo

10

Strany od–do

379–385

Počet stran

7

BIBTEX


@article{BUT177473,
  author="Bohuslav {Mašek} and Filip {Šiška} and Miroslav {Šmíd} and Denisa {Bártková},
  title="Kinetic study of static recrystallization in an Fe-Al-O ultra-fine-grained nanocomposite",
  year="2017",
  volume="97",
  number="10",
  month="February",
  pages="379--385",
  publisher="TAYLOR & FRANCIS LTD",
  address="ABINGDON",
  issn="0950-0839"
}