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Residual Stress after Electric Discharge Machining

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Abstract

In the electric discharge machining (EDM) of VZhL14 alloy and ЭП517Ш steel, tensile residual stress appears in the surface layer. With increase in current, the residual stress increases; with increase in pulse duration, it falls. The influence of the current on the residual stress is greater than the influence of the pulse duration. Hence, in selecting the EDM conditions, the current is the key parameter. Mechanical removal of the defective layer is recommended so as to prevent microcrack propagation. In that case, useful compressive residual stress appears.

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Funding

Financial support was provided by the Russian Ministry of Science and Higher Education (project FNSM-2020-0028).

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Authors and Affiliations

  1. Perm National Research Polytechnic University, Perm, Russia

    T. R. Ablyaz, I. V. Osinnikov, A. A. Shiryaev & K. R. Muratov

  2. Voronezh State Technical University, Voronezh, Russia

    E. V. Smolentsev

Authors
  1. T. R. Ablyaz
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  2. I. V. Osinnikov
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  3. A. A. Shiryaev
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  4. K. R. Muratov
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  5. E. V. Smolentsev
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Corresponding authors

Correspondence to T. R. Ablyaz, I. V. Osinnikov, A. A. Shiryaev, K. R. Muratov or E. V. Smolentsev.

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Translated by B. Gilbert

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Ablyaz, T.R., Osinnikov, I.V., Shiryaev, A.A. et al. Residual Stress after Electric Discharge Machining. Russ. Engin. Res. 42, 850–852 (2022). https://doi.org/10.3103/S1068798X22080044

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  • DOI: https://doi.org/10.3103/S1068798X22080044

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