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An investigation by the acoustic-emission method of the destruction of steel in plastic deformation

  • Strength Properties
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    In plastic deformation of 30 steel by tension on the S = f(δ1/2) curves there are clearly recorded points of breaks corresponding to the initial (point A) and later (point D) stages of development of the destruction processes in deformation.

  2. 2.

    The points of destruction of 30 steel are reliably recorded by the acoustic-emission method. They appear most clearly for coarse-grained steel. The amplitude of the signals caused by destruction is more than 55 μV. At the same time, the relationship of the amplitudes from plastic deformation (up to point A) and from destruction makes it possible to assume that the point A corresponds to the moment of formation of defects in the form of microcracks.

  3. 3.

    For reliable revealing of the points of destruction by the acoustic-emission method it is necessary to simultaneously record the intensity of the signals\(\dot N\) and their amplitude distribution and to select the optimum specimen dimensions and rate of deformation of them.

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Literature cited

  1. L. M. Rybakova, "The destruction of metal in three-dimensional and surface plastic deformation," Metalloved. Term. Obrab. Met., No. 8, 17–22 (1980).

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  5. A. V. Skoblo, A. P. Zhigun, S. A. Kolesov, and L. P. Dunina, "An investigation of the processes of deformation and fracture of heat-treated steels and alloys by the acoustic-emission method," Metalloved. Term. Obrab. Met., No. 12, 24–26 (1981).

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Authors
  1. L. M. Rybakova
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  2. N. S. Kuznetsov
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  3. I. A. Lipyanko
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  4. B. A. Prusakov
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  5. Yu. M. Reznikov
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 31–34, June, 1985.

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Rybakova, L.M., Kuznetsov, N.S., Lipyanko, I.A. et al. An investigation by the acoustic-emission method of the destruction of steel in plastic deformation. Met Sci Heat Treat 27, 433–437 (1985). https://doi.org/10.1007/BF00693283

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  • DOI: https://doi.org/10.1007/BF00693283

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