Abstract
Elastic waves were generated in slender polycrystalline 2024 aluminum rods by the deposition of laser energy into the ends of the rods with a Q-switched laser. The propagation velocities of the waves were measured in the temperature range of 22° to 500°C. The elastic moduli of the material determined from these wave-propagation measurements are compared with previously reported single-crystal and polycrystalline aluminum data at elevated temperatures. Elastic moduli for polycrystalline 2024 aluminum agree with other reported data below about 200°C. Above this temperature, the 2024 aluminum moduli were found to decrease more rapidly with temperature than did those for single-crystal aluminum, although not as drastically as has been previously reported for polycrystalline aluminum.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Kê, T., “Experimental Evidence of the Viscous Behavior of Grain Boundaries in Metals,”Phys. Rev.,71 (8),533–546 (April1947).
Sutton, P. M., “The Variation of the Elastic Constants of Crystalline Aluminum with Temperature Between 63°K and 773°K,”Phys. Rev.,91 (4)816–821 (August1953).
Kamm, G. N. andAlers, G. A., “Low-Temperature Elastic Moduli of Aluminum,”Jnl. Appl. Phys.,35 (2),327–330 (February1964).
Vallin, J., Mongy, M., Salama, K., andBeckman, O., “Elastic Constants of Aluminum,”Jnl. Appl. Phys.,35 (6),1825–1826 (June1964).
Gerlich, D. andFisher, E., “The High Temperature Elastic Moduli of Aluminum,”Jnl. Phys. Chem. Solids,30 (5),1197–1205 (May1969).
Asay, J. R., Urzendowski, S. R., andGuenther, A. H., “Ultrasonic and Thermal Studies of Selected Plastics, Laminated Materials, and Metals,”Technical Report No. AFWL-TR-67-91, Air Force Weapons Laboratory, Kirtland Air Force Base, N. M. (January1968).
Percival, C. M. andCheny, J. A., “Thermally Generated Stress Waves in a Dispersive Elastic Rod,”Experimental Mechanics,9 (2),49–57 (February1969).
Reynolds, M. B., “The Determination of the Elastic Constants of Metals by the Ultrasonic Pulse Technique,”34th Ann. Conf. of Amer. Soc. Met., Philadelphia, Penn., 1952, Trans. of A.S.M.,45,839–853 (1953).
Hutchinson, J. R. andPercival, C. M., “Higher Modes of Longitudinal Wave Propagation in Thin Rods,”Jnl. Acoust. Soc. Amer.,44 (5)1204–1210 (November1968).
Touloukian, J. S., ed., Thermophysical Properties of High Temperature Solid Materials,1,11, 17, MacMillan Co., (1967).
Garofalo, F., Malenock, P. R., and Smith, G. V., “The Influence of Temperature on the Elastic Constants of Some Commercial Steels,“ Symposium on Determination of Elastic Constants, ASTM Special Technical Publication #129, 10–30 (June 1952).
Brammer, J. A. To be published.
Slater, J. C., Introduction to Chemical Physics, McGraw-Hill, New York, 215 (1939).
Asay, J. R., Dorr, A. J., Arnold, N. D., andGuenther, A. H., “Ultrasonic Wave Velocity-Temperature Studies in Several Plastics, Plastic Foams and Nose Cone Materials,”Technical Report No. AFWL-TR-65-188, Air Force Weapons Laboratory, Kirtland Air Force Base, N. M. (March1966).
Author information
Authors and Affiliations
Additional information
This work was supported by the United States Atomic Energy Commission.
Rights and permissions
About this article
Cite this article
Brammer, J.A., Percival, C.M. Elevated-temperature elastic moduli of 2024 aluminum obtained by a laser-pulse technique. Experimental Mechanics 10, 245–250 (1970). https://doi.org/10.1007/BF02324097
Issue Date:
DOI: https://doi.org/10.1007/BF02324097