Abstract
In the central part of the Fe–Al system between about 58 and 65 at.% Al, a high-temperature phase denoted as ε occurs with a hitherto unknown crystallographic structure. The phase is stable between 1231°C and 1095°C. In order to study the crystallographic structure of the ε phase, in situ high-temperature neutron time-of-flight diffraction experiments have been performed at the HIPPO instrument at the Los Alamos Neutron Science Center (LANSCE). The ε phase was found to have the formula Fe5Al8 with a body-centred cubic structure of the Hume–Rothery Cu5Zn8 type (I\(\bar{4}3\)m (No. 217), Z=4, cI52) and 52 atoms in the unit cell. Its lattice parameter is a=8.9756(2) Å at 1120°C, which is 3.02 times that of cubic FeAl (B2) at the same temperature. We report here the evolution of the crystallographic parameters over the temperature range between 1080°C and 1120°C.
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References
A.G.C. Gwyer, Z. Anorg. Chem. 57, 113–153 (1908)
A. Osawa, Sci. Rep. Tohoku Univ. 22, 803–823 (1933)
A. Taylor, R.M. Jones, J. Phys. Chem. Solids 6, 16–37 (1958)
M. Palm, J. Alloys Compd. 252, 192–200 (1997)
R. Ducher, F. Stein, B. Viguier, M. Palm, J. Lacaze, Z. Metallkd. 94, 396–410 (2003)
M. Eumann, G. Sauthoff, M. Palm, Intermetallics 16, 834–846 (2008)
F. Stein, M. Palm, Int. J. Mater. Sci. 98, 580–588 (2007)
F. Stein, S.C. Vogel, M. Eumann, M. Palm, Intermetallics 18, 150–156 (2010)
H.-R. Wenk, L. Lutterotti, S. Vogel, Nucl. Instrum. Methods Phys. Res. A 515(3), 575–588 (2003)
S. Vogel, C. Hartig, L. Lutterotti, R.B. von Dreele, H.-R. Wenk, D.J. Williams, Powder Diffr. 19, 65–68 (2004)
S. Matthies, J. Pehl, H.-R. Wenk, L. Lutterotti, S. Vogel, J. Appl. Crystallogr. 38, 462–475 (2005)
W.D. Porter, P.J. Maziasz, Scr. Metall. Mater. 29, 1043–1048 (1993)
B.V. Reddy, S.C. Deevi, Intermetallics 8, 1369–1376 (2000)
R.N. Corby, P.J. Black, Acta Crystalogr. B 29, 2669–2677 (1973)
A.C. Larson, R.B. von Dreele, Los Alamos National Laboratory Report LAUR 86-748 (2004)
U.R. Kattner, B.P. Burton, in: Phase Diagrams of Binary Iron Alloys, ed. by Okamoto, H., ASM International, Materials Park, OH (1993), p. 12
O. Gourdon, D. Gout, D.J. Williams, T. Proffen, S. Hobbs, G.J. Miller, Inorg. Chem. 46, 251 (2007)
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Vogel, S.C., Stein, F. & Palm, M. Investigation of the ε phase in the Fe–Al system by high-temperature neutron diffraction. Appl. Phys. A 99, 607–611 (2010). https://doi.org/10.1007/s00339-010-5619-y
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DOI: https://doi.org/10.1007/s00339-010-5619-y