TY - GEN
T1 - Role of thermal vacancies on temperature dependence of lattice parameter and elastic moduli in B2-type FeAl
AU - Zhao, Mi
AU - Yoshimi, Kyosuke
AU - Maruyama, Kouichi
AU - Yubuta, Kunio
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - Temperature dependence of the lattice parameter and elastic moduli in Fe-40 and -43Al (at.%) was investigated by high temperature X-ray diffractometry (XRD) and the Electro-Magnetic Acoustic Resonance (EMAR) method. The thermal vacancy concentration was estimated from the activation enthalpy and entropy data of vacancy formation previously reported for FeAl. It was found that both the lattice parameter and the elastic moduli of FeAl have a linear relationship with temperature even in the temperature range where thermal vacancy concentration rapidly increases (above 400°C), thus suggesting that newly generated thermal vacancies at elevated temperature do not make significant influence on the lattice parameter and the elastic properties of B2-type FeAl.
AB - Temperature dependence of the lattice parameter and elastic moduli in Fe-40 and -43Al (at.%) was investigated by high temperature X-ray diffractometry (XRD) and the Electro-Magnetic Acoustic Resonance (EMAR) method. The thermal vacancy concentration was estimated from the activation enthalpy and entropy data of vacancy formation previously reported for FeAl. It was found that both the lattice parameter and the elastic moduli of FeAl have a linear relationship with temperature even in the temperature range where thermal vacancy concentration rapidly increases (above 400°C), thus suggesting that newly generated thermal vacancies at elevated temperature do not make significant influence on the lattice parameter and the elastic properties of B2-type FeAl.
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U2 - 10.1557/opl.2012.1682
DO - 10.1557/opl.2012.1682
M3 - Conference contribution
AN - SCOPUS:84884665473
SN - 9781605114934
T3 - Materials Research Society Symposium Proceedings
SP - 169
EP - 175
BT - Intermetallic-Based Alloys - Science, Technology and Applications
T2 - 2012 MRS Fall Meeting
Y2 - 25 November 2012 through 30 November 2012
ER -