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Effect of preferred orientation on the damping capacity of magnesium alloys

  • Mechanical Behavior
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Abstract

The torsional vibration damping of Mg-4.5 Ce alloys has been correlated with the texture orientation resulting from the method of fabrication. Forged and forged-plus-swaged alloys at vibratory stress levels of 1500 psi exhibit specific damping capacities, respectively, of 6 and 11 times that of an extruded alloy of similar composition. Pole figures show that the basal planes are oriented preferentially in the extruded alloys with a 20 deg tilt to the axis of the extrusion, while the basal planes are generally parallel to the rod axis for forged or forged-plus-swaged alloys. The correlations indicate that the major source of damping in these hexagonal magnesium alloys is stress-induced anelastic shear on the basal planes (probably by dislocation motion).

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Authors and Affiliations

  1. Rolla Mctallurgy Research Center, Bureau of Mines, U.S. Department of the Interior, Rolla, Mo.

    Alfred E. Schwaneke (Supervisory Research Physicist) & Robert W. Nash (Physical Science Technician)

Authors
  1. Alfred E. Schwaneke
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  2. Robert W. Nash
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Schwaneke, A.E., Nash, R.W. Effect of preferred orientation on the damping capacity of magnesium alloys. Metall Trans 2, 3453–3457 (1971). https://doi.org/10.1007/BF02811627

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  • DOI: https://doi.org/10.1007/BF02811627

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