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Experimental study of the origin of strain-rate sensitivity in a common Pb-Sn alloy

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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.

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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

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  • DOI: https://doi.org/10.1007/BF02661334

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