Deformability Behavior of St3 Steel Used in the Profiles of High-Voltage Poles

The reasons for the difference in mechanical properties of cold-rolled angles made of low-carbon St3 steel used in old designs of high-voltage poles are established. Several kinetic curves for mechanical properties were investigated in terms of tangential and plastic moduli as the most appropriate tool since the integrating parameters can present some strength and deformability differences much more clear at any stage of deformation. The original quantitative characteristics were presented to eliminate the manufacturing quality effect of pole elements and demonstrate the importance of deformation behavior in explaining the microstructural variety. The microstructural phenomena may affect stress levels at the points of yielding, ultimate strength, and fracture.

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  1. 1.

    P. Baltrünas, D. Butkus, V. Oðkinis, et al., The Environment Saving [in Lithuanian], Technika, Vilnius (2008).

  2. 2.

    H. Karagah, C. Shi, M. Dawood, and A. Belarbi, “Experimental investigation of short steel columns with localized corrosion,” Thin Wall. Struct., 87, 191–199 (2015).

    Article  Google Scholar 

  3. 3.

    L.-V. Beaulieu, F. Legeron, and S. Langlois, “Compression strength of corroded steel angle members,” J. Constr. Steel Res., 66, No. 11, 1366–1373 (2010).

    Article  Google Scholar 

  4. 4.

    W. F. Chen and H. Zhang, Structural Plasticity: Theory, Problems, and CAE Software, Springer-Verlag, New York (1991).

    Google Scholar 

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Correspondence to J. Mockiene.

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Translated from Problemy Prochnosti, No. 3, pp. 119 – 133, May – June, 2018.

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Jutas, A., Mockiene, J., Vaiciukynas, V. et al. Deformability Behavior of St3 Steel Used in the Profiles of High-Voltage Poles. Strength Mater 50, 465–477 (2018).

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  • pole
  • St3 steel
  • stress
  • corrosion
  • microstructure