Tensile properties of as-cast iron-aluminide alloys

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Room-temperature tensile properties of as-cast Fe{sub 3}Al-based FA-129 alloy were investigated. Tensile properties were obtained in the as-cast condition in air, oxygen, and water-vapor environments, and after homogenization at 700, 900, and 1200{degrees}C. Transmission electron microscopy (MM) was used to characterize ordered phases and dislocation structure, and optical metallography and scanning electron microscopy (SEM) were used to characterize the grain microstructure and fracture morphology. Tensile properties in the as-cast condition exhibited an environmental effect; tensile ductilities in oxygen atmosphere were greater than those obtained in laboratory air. Homogenized samples of FA-129 alloy exhibited almost twice the ductility found in the ... continued below

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11 p.

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Viswanathan, S.; McKamey, C.G. & Maziasz, P.J. January 1, 1995.

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Room-temperature tensile properties of as-cast Fe{sub 3}Al-based FA-129 alloy were investigated. Tensile properties were obtained in the as-cast condition in air, oxygen, and water-vapor environments, and after homogenization at 700, 900, and 1200{degrees}C. Transmission electron microscopy (MM) was used to characterize ordered phases and dislocation structure, and optical metallography and scanning electron microscopy (SEM) were used to characterize the grain microstructure and fracture morphology. Tensile properties in the as-cast condition exhibited an environmental effect; tensile ductilities in oxygen atmosphere were greater than those obtained in laboratory air. Homogenized samples of FA-129 alloy exhibited almost twice the ductility found in the as-cast condition. Microstructural characterization of the homogenized samples and comparison of the as-cast and homogenized microstructures provided clues that helped to explain the poor ductility in the as-cast state.

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11 p.

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OSTI as DE95005396

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  • 8. annual conference on fossil energy materials, Oak Ridge, TN (United States), 10-12 May 1994

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  • Other: DE95005396
  • Report No.: CONF-9405143--10
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 35389
  • Archival Resource Key: ark:/67531/metadc677433

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  • January 1, 1995

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  • July 25, 2015, 2:20 a.m.

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  • Jan. 21, 2016, 12:59 p.m.

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Viswanathan, S.; McKamey, C.G. & Maziasz, P.J. Tensile properties of as-cast iron-aluminide alloys, article, January 1, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc677433/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.