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Elastic wave velocities in various alloy strips

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Abstract

The zeroth order plate mode shear wave velocity has been measured in thin strip specimens of Oriented Electrical Steel, Elinvar-Extra, and RMI 464 titanium alloy as a function of the angle between the propagation direction and the rolling direction. Also, the plane wave shear and longitudinal velocities have been measured along the normal to the rolling plane. The results in the Oriented Electrical Steel agree with the known (110)[001] texture. In the Elinvar-Extra there is a texture indistinguishable elastically from (100)[Oil], or partial (100)[011] superimposed on a random background. Different annealing temperatures following cold-rolling yield different degrees of anisotropy and different dependences (1/G)(dG/dT) of the shear modulus upon ambient temperature. At an annealing temperature of about 850‡C, (1/G)(dG/dT) evaluated near room temperature changes from positive to negative, and anisotropy becomes minimum. In the RMI 464 titanium alloy, the shear velocity anisotropy was only 1 pct in the rolling plane.

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Authors and Affiliations

  1. A Subsidiary of Esterline Corp., Waltham, Mass

    Emmanuel P. Papadakis (Department Head, Physical Acoustics, Panametrics)

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  1. Emmanuel P. Papadakis
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Formerly with Bell Telephone Laboratories, Allen town, Pa.

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Papadakis, E.P. Elastic wave velocities in various alloy strips. Metall Trans 2, 575–578 (1971). https://doi.org/10.1007/BF02663351

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  • DOI: https://doi.org/10.1007/BF02663351

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