Experimental study of the FeAl-NiAl-TiAl section

Liliana Duarte; Christian Leinenbach; U.E. Klotz; Martin Marker; Klaus Richter; J.F. Loeffler

doi:10.1016/j.intermet.2011.12.007

Experimental study of the FeAl-NiAl-TiAl section

Liliana Duarte (Corresponding author), Christian Leinenbach, U.E. Klotz, Martin Marker, Klaus Richter, J.F. Loeffler

Department of Functional Materials and Catalysis

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

In this study phase equilibria in the Fe-Ni-Ti-Al system were investigated experimentally, with special emphasis on the FeAl-NiAl-TiAl section. Individual alloys with chemical compositions from this section were prepared by arc-melting in an argon atmosphere, and were examined by differential thermal analysis (DTA). Microstructural characterization of as-cast and samples equilibrated at 800 degrees C and 1000 degrees C was performed by scanning electron microscopy (SEM), and the compositions of the coexisting phases were established by electron probe microanalysis (EPMA). The crystal structure of selected alloys was characterized by X-ray diffraction (XRD) and Rietveld refinements. A complete solid solubility of the B2 phase from FeAl to NiAl was observed and the solubility for Ti was seen to decrease with decreasing temperature. The ternary phase Al2FeTi (tau(2)) also shows a significant extension into the quaternary. In contrast, TiAl has a very low solubility for Fe and Ni.

Original language	English
Pages (from-to)	80-90
Number of pages	11
Journal	Intermetallics
Volume	23
DOIs	https://doi.org/10.1016/j.intermet.2011.12.007
Publication status	Published - 2012

Austrian Fields of Science 2012

104003 Inorganic chemistry
104011 Materials chemistry

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10.1016/j.intermet.2011.12.007

Cite this

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title = "Experimental study of the FeAl-NiAl-TiAl section",

abstract = "In this study phase equilibria in the Fe-Ni-Ti-Al system were investigated experimentally, with special emphasis on the FeAl-NiAl-TiAl section. Individual alloys with chemical compositions from this section were prepared by arc-melting in an argon atmosphere, and were examined by differential thermal analysis (DTA). Microstructural characterization of as-cast and samples equilibrated at 800 degrees C and 1000 degrees C was performed by scanning electron microscopy (SEM), and the compositions of the coexisting phases were established by electron probe microanalysis (EPMA). The crystal structure of selected alloys was characterized by X-ray diffraction (XRD) and Rietveld refinements. A complete solid solubility of the B2 phase from FeAl to NiAl was observed and the solubility for Ti was seen to decrease with decreasing temperature. The ternary phase Al2FeTi (tau(2)) also shows a significant extension into the quaternary. In contrast, TiAl has a very low solubility for Fe and Ni.",

author = "Liliana Duarte and Christian Leinenbach and U.E. Klotz and Martin Marker and Klaus Richter and J.F. Loeffler",

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T1 - Experimental study of the FeAl-NiAl-TiAl section

AU - Duarte, Liliana

AU - Leinenbach, Christian

AU - Klotz, U.E.

AU - Marker, Martin

AU - Richter, Klaus

AU - Loeffler, J.F.

N1 - Accession Number: WOS:000301275000012

PY - 2012

Y1 - 2012

N2 - In this study phase equilibria in the Fe-Ni-Ti-Al system were investigated experimentally, with special emphasis on the FeAl-NiAl-TiAl section. Individual alloys with chemical compositions from this section were prepared by arc-melting in an argon atmosphere, and were examined by differential thermal analysis (DTA). Microstructural characterization of as-cast and samples equilibrated at 800 degrees C and 1000 degrees C was performed by scanning electron microscopy (SEM), and the compositions of the coexisting phases were established by electron probe microanalysis (EPMA). The crystal structure of selected alloys was characterized by X-ray diffraction (XRD) and Rietveld refinements. A complete solid solubility of the B2 phase from FeAl to NiAl was observed and the solubility for Ti was seen to decrease with decreasing temperature. The ternary phase Al2FeTi (tau(2)) also shows a significant extension into the quaternary. In contrast, TiAl has a very low solubility for Fe and Ni.

AB - In this study phase equilibria in the Fe-Ni-Ti-Al system were investigated experimentally, with special emphasis on the FeAl-NiAl-TiAl section. Individual alloys with chemical compositions from this section were prepared by arc-melting in an argon atmosphere, and were examined by differential thermal analysis (DTA). Microstructural characterization of as-cast and samples equilibrated at 800 degrees C and 1000 degrees C was performed by scanning electron microscopy (SEM), and the compositions of the coexisting phases were established by electron probe microanalysis (EPMA). The crystal structure of selected alloys was characterized by X-ray diffraction (XRD) and Rietveld refinements. A complete solid solubility of the B2 phase from FeAl to NiAl was observed and the solubility for Ti was seen to decrease with decreasing temperature. The ternary phase Al2FeTi (tau(2)) also shows a significant extension into the quaternary. In contrast, TiAl has a very low solubility for Fe and Ni.

U2 - 10.1016/j.intermet.2011.12.007

DO - 10.1016/j.intermet.2011.12.007

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