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The weakening effect at high deformation rates of metals and alloys

  • Strength Characteristics
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    We investigated the effect of deformation rate on the ultimate strength of iron alloyed with chromium that was strengthened by strain hardening. It was found that the strength decreased above a certain deformation rate, called the critical.

  2. 2.

    From a special experiment we determined the conditions resulting in instrumental error in tests in the TsVIK machine. The general conditions are given for the possibility of using high deformation rates excluding instrumental error—the inertial time lag in recording the force.

  3. 3.

    An equation was proposed for the change in strength at supercritical deformation rates. The parameters of this equation are the critical deformation rate v crd and the weakening coefficient k.

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Literature cited

  1. J. Winlock, J. of Metals,5 (1953).

  2. E. Houdremont, Special Steels [Russian translation], Metallurgizdat, Moscow (1959).

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  3. C. Zener, Micro Mechanism of Fracturing, Fracturing of Metals, ASM (1949).

  4. A. N. Stroh, in: Atomic Mechanism of Failure [Russian Translation], Metallurgizdat, Moscow (1963).

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Authors
  1. B. M. Blanter
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  2. M. E. Blanter
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 58–61, December, 1971.

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Blanter, B.M., Blanter, M.E. The weakening effect at high deformation rates of metals and alloys. Met Sci Heat Treat 13, 1053–1056 (1971). https://doi.org/10.1007/BF00665007

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  • DOI: https://doi.org/10.1007/BF00665007

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