blackmetИзвестия высших учебных заведений. Черная МеталлургияIzvestiya. Ferrous Metallurgy0368-07972410-2091National University of Science and Technology "MISIS"10.17073/0368-0797-2013-6-70-73blackmet-579Research ArticleТЕМАТИЧЕСКАЯ ПОДБОРКА СТАТЕЙ «НАНОСТРУКТУРНОЕ МАТЕРИАЛОВЕДЕНИЕ»TOPICAL COLLECTION OF ARTICLES «NANOSTRUCTURED MATERIAL SCIENCE»EFFECT OF ELECTROPULSING TREATMENT ON THE MECHANICAL PROPERTIES OF Q235 STEEL STRIPEFFECT OF ELECTROPULSING TREATMENT ON THE MECHANICAL PROPERTIES OF Q235 STEEL STRIPSuwenChenChenSuwenGuoyiTangTangGuoyiShenhuaSongSongShenhuaGuolinSongSongGuolinGromovV. E.GromovVictorAdvanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China) Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology (China)КитайAdvanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China) Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology (China)ChinaAdvanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China)КитайDepartment of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology (China)ChinaAdvanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China)КитайAdvanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China)ChinaSiberian State University of Industry (Russia)РоссияSiberian State University of Industry (Russia)Russian Federation2013050420155667073Copyright © Suwen C., Guoyi T., Shenhua S., Guolin S., Gromov V.E., 20152015Suwen C., Guoyi T., Shenhua S., Guolin S., Gromov V.E.Chen S., Tang G., Song S., Song G., Gromov V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://fermet.misis.ru/jour/article/view/579

The elctropulsing treatment (EPT) has been successfully applied to the processing of a low carbon Q235 steel strip. Comparing with the con- ventional heat treatment (CHT), a proper EPT is capable of achieving the similar or even better effect on the mechanical properties of the steel strip. It was found that the optimum combination of the EPT parameters are 180 V in voltage and 500 Hz in frequency (180 V – 500 Hz) leading to a combination of tensile strength-elongation of 371 MPa – 47,5 %. Optical microscopy analyses indicates that the EPT/180 V – 500 Hz for Q235 steel strip can accelerate the formation of the completely recrystallized microstructure in which the grain size become relatively finer and more uniform compared to the elongated one formed in the cold-rolled sample. Such phenomenon is consistent with the improvement of the mechanical performance of the Q235 steel sample under the EPT. However, the EPT with inadequate frequency can only result in partial recrystallization of the grains, while the one with an exceed frequency may lead to the apparent grain growth within the sample. Both cases can not produce satisfactory combination of strength and ductility for the steel samples.

The elctropulsing treatment (EPT) has been successfully applied to the processing of a low carbon Q235 steel strip. Comparing with the con- ventional heat treatment (CHT), a proper EPT is capable of achieving the similar or even better effect on the mechanical properties of the steel strip. It was found that the optimum combination of the EPT parameters are 180 V in voltage and 500 Hz in frequency (180 V – 500 Hz) leading to a combination of tensile strength-elongation of 371 MPa – 47,5 %. Optical microscopy analyses indicates that the EPT/180 V – 500 Hz for Q235 steel strip can accelerate the formation of the completely recrystallized microstructure in which the grain size become relatively finer and more uniform compared to the elongated one formed in the cold-rolled sample. Such phenomenon is consistent with the improvement of the mechanical performance of the Q235 steel sample under the EPT. However, the EPT with inadequate frequency can only result in partial recrystallization of the grains, while the one with an exceed frequency may lead to the apparent grain growth within the sample. Both cases can not produce satisfactory combination of strength and ductility for the steel samples.

electropulsing treatmentthe conventional heat treatmentmechanical propertiesmicrostructureelectropulsing treatmentthe conventional heat treatmentmechanical propertiesmicrostructureReferencesTroitskii O.A. // Journal of Experimental and Theoretical Physics. 1969. Vol. 10. P. 18 – 22.Troitskii O.A. // Journal of Experimental and Theoretical Physics. 1969. Vol. 10. P. 18 – 22.Wang Z., Song H. // Journal of Alloys and Compounds. 2009. Vol. 470. P. 522 – 530.Wang Z., Song H. // Journal of Alloys and Compounds. 2009. Vol. 470. P. 522 – 530.Wang Z., Song H. // Transactions of Nonferrous Metals Society of China. 2009. Vol. 19. P. 409 – 413.Wang Z., Song H. // Transactions of Nonferrous Metals Society of China. 2009. Vol. 19. P. 409 – 413.Conrad H., Karam N., Mannan S. // Scripta Materialia. 1983. Vol. 17. P. 411 – 416.Conrad H., Karam N., Mannan S. // Scripta Materialia. 1983. Vol. 17. P. 411 – 416.Conrad H., Karam N., Mannan S. // Scripta Materialia. 1984. Vol. 18. P. 275 – 280.Conrad H., Karam N., Mannan S. // Scripta Materialia. 1984. Vol. 18. P. 275 – 280.Elektrostimulirovannaya ductility of metals and alloys / V.E. Gromov, L.B. Zuev, E.V. Kozlov, V.Y. Tsellermaer. – Moscow: Nedra, 1996. – 290.Elektrostimulirovannaya ductility of metals and alloys / V.E. Gromov, L.B. Zuev, E.V. Kozlov, V.Y. Tsellermaer. – Moscow: Nedra, 1996. – 290.Zhu Y.H., Lee W.B., Liu X.M. et al. // Materials Science and Engineering A. 2009. Vol. 501. P. 125 – 132.Zhu Y.H., Lee W.B., Liu X.M. et al. // Materials Science and Engineering A. 2009. Vol. 501. P. 125 – 132.To S., Zhu Y.H., Lee W.B. et al. // Materials Transaction. 2009. Vol. 50. P. 1105 – 1112.To S., Zhu Y.H., Lee W.B. et al. // Materials Transaction. 2009. Vol. 50. P. 1105 – 1112.To S., Zhu Y.H., Lee W.B. et al. // Materials Transaction. 2009. Vol. 50. P. 2772 – 2777.To S., Zhu Y.H., Lee W.B. et al. // Materials Transaction. 2009. Vol. 50. P. 2772 – 2777.Liu W.B., W e n Y.H., L i N., Yang S.Z. // Journal of Alloys and Compounds. 2009. Vol. 472. P. 591 – 594.Liu W.B., W e n Y.H., L i N., Yang S.Z. // Journal of Alloys and Compounds. 2009. Vol. 472. P. 591 – 594.X u Z.H., Tang G.Y., Ding F. et al. // Applied Physics A. 2007. Vol. 88. P. 429 – 433.X u Z.H., Tang G.Y., Ding F. et al. // Applied Physics A. 2007. Vol. 88. P. 429 – 433.Guan L., T ang G.Y., Jiang Y.B., Chu P.K. // Journal of Alloys and Compounds. 2009. Vol. 487. P. 309 – 313.Guan L., T ang G.Y., Jiang Y.B., Chu P.K. // Journal of Alloys and Compounds. 2009. Vol. 487. P. 309 – 313.Guan L., T ang G.Y., Chu P.K., Jiang Y.B. // Journal of Materials Research. 2009. Vol. 24. P. 3674 – 3679.Guan L., T ang G.Y., Chu P.K., Jiang Y.B. // Journal of Materials Research. 2009. Vol. 24. P. 3674 – 3679.Jiang Y.B., T ang G.Y., Guan L. et al. // Journal of Materials Research. 2008. Vol. 23. P. 2685 – 2690.Jiang Y.B., T ang G.Y., Guan L. et al. // Journal of Materials Research. 2008. Vol. 23. P. 2685 – 2690.Troitskii O.A., Spitsyn V.I., Sokolov N.V., Ryzhkov V.G. // Physica Status Solidi A. 1979. Vol. 52. P. 2685 – 2690.Troitskii O.A., Spitsyn V.I., Sokolov N.V., Ryzhkov V.G. // Physica Status Solidi A. 1979. Vol. 52. P. 2685 – 2690.Sprecher A.F., Mamnnan S.L., Conrad H. // Acta Materialia. 1986. Vol. 34. P. 1145 – 1150.Sprecher A.F., Mamnnan S.L., Conrad H. // Acta Materialia. 1986. Vol. 34. P. 1145 – 1150.Okazaki K., Kagawa M., Conard H. // Materials Science and Engineering A. 1980. Vol. 45. P. 109 – 116.Okazaki K., Kagawa M., Conard H. // Materials Science and Engineering A. 1980. Vol. 45. P. 109 – 116.Sprecher F., Mannan S.L., Conrad H. // Acta Materialia. 1983. Vol. 17. P. 769 – 772.Sprecher F., Mannan S.L., Conrad H. // Acta Materialia. 1983. Vol. 17. P. 769 – 772.X u Z.H., Tang G.Y., Tian S.Q. et al. // Journal of Materials Research. 2007. Vol. 182. P. 128 – 133.X u Z.H., Tang G.Y., Tian S.Q. et al. // Journal of Materials Research. 2007. Vol. 182. P. 128 – 133.

The authors declare that there are no conflicts of interest present.