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    STP579

    Low Temperature Elastic Properties of Aluminum 5083-0 and Four Ferritic Nickel Steels

    Published: 01 January 1975


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    Abstract

    The low-temperature elastic properties have been determined for five commercial alloys that have possible structural applications at cryogenic temperatures. The alloys are 5083-0 aluminum and four ferritic steels: 3.5, 5, 6, and 9 percent nickel. An ultrasonic (10 MHz) pulse-superposition method was used to measure longitudinal and transverse wave velocities. Using the velocities and the mass density as input, the following elastic constants were calculated: longitudinal modulus, Young's (tensile) modulus, shear (rigidity) modulus, bulk modulus (reciprocal compressibility), and Poisson's ratio. Measurements were made semicontinuously from 300 to 4K. The room-temperature composition dependence of iron-nickel alloys is reviewed comprehensively up to 12 percent nickel. Debye temperatures were calculated from the elastic constants. A discussion is given of the temperature dependences of the elastic constants and differential relationships among the elastic constants.

    Keywords:

    storage tanks, aluminum alloys, bulk modulus, compressibility, specific heat, nickel steels, Poisson ratio, shear modulus, sound velocity, Young's modulus, elastic properties, ferroalloys


    Author Information:

    Weston, WF
    Physicist and research metallurgist, Institute for Basic Standards, National Bureau of Standards, Boulder, Colo.

    Naimon, ER
    Physicist, Dow Chemical CompanyNational Research Council/National Bureau of Standards Postdoctoral Research Associates, Golden, Colo.

    Ledbetter, HM
    Physicist and research metallurgist, Institute for Basic Standards, National Bureau of Standards, Boulder, Colo.


    Committee/Subcommittee: E50.01

    DOI: 10.1520/STP29171S