Abstract
The origin of strain-rate sensitivity existing in the room-temperature plastic distortion of a 60 pet Pb-40 pet Sn alloy is examined experimentally using simple tension loadings. It is found that the response of this material to both constant stress and constant strain-rate loadings is accurately described by a single uniaxial constitutive relation which is independent of the instantaneous level of straining rate and dependent explicitly only on stress, strain and lapse-time variables. The rate sensitivity exhibited by this alloy during room-temperature quasistatic tensile deformations is thus concluded to be explainable directly in terms of a combination of the competing effects of strain hardening and time-dependent thermal softening without the necessity of introducing explicit strain-rate mechanisms of any kind.
Similar content being viewed by others
References
A. Seeger:Dislocations and Mechanical Properties of Crystals, p. 243, John Wiley and Sons, New York, 1957.
D. J. Bailey and W. F. Flanagan:Phil. Mag., 1967, vol. 15, p. 43.
R. W. Bailey:J. Inst. Metals, 1926, vol. 35, p. 27.
E. Orowan:J. West Scot. Iron Steel Inst., 1946, vol. 54, p. 45.
S. K. Mitra and D. McLean:Proc. Roy. Soc., 1966, vol. 295, p. 288.
J. H. Gittus:Phil. Mag., 1970, vol. 21, p. 495.
H. Conrad:Mechanical Behavior of Materials at Elevated Temperatures, p. 151, McGraw-Hill, New York, 1961.
A. J. Kennedy:Processes of Creep and Fatigue in Metals, p. 153, John Wiley and Sons, New York, 1963.
W. G. Soper:J. Appl. Mech., 1961, vol. 28, p. 132.
J. F. Bell:Springer Tracts in Natural Philosophy, vol. 14, p. 35, Springer-Verlag, Berlin, 1968.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dawson, T.H. Experimental study of the origin of strain-rate sensitivity in a common Pb-Sn alloy. Metall Trans 3, 3201–3204 (1972). https://doi.org/10.1007/BF02661334
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02661334