EFFECT OF ELECTROPULSING TREATMENT ON THE MECHANICAL PROPERTIES OF Q235 STEEL STRIP
Аннотация
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.
Об авторах
Chen Suwen
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China)
Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology (China)
Китай
Китай
Tang Guoyi
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China)
Китай
Китай
Song Shenhua
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China)
Китай
Китай
Song Guolin
Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University (China)
Китай
Китай
V. E. Gromov
Siberian State University of Industry (Russia)
Россия
Россия
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Для цитирования:
Suwen C., Guoyi T., Shenhua S., Guolin S., Gromov V.E. EFFECT OF ELECTROPULSING TREATMENT ON THE MECHANICAL PROPERTIES OF Q235 STEEL STRIP. Известия Высших Учебных Заведений. Черная Металлургия. 2013;56(6):70-73. https://doi.org/10.17073/0368-0797-2013-6-70-73
For citation:
Chen S., Tang G., Song S., Song G., Gromov V. EFFECT OF ELECTROPULSING TREATMENT ON THE MECHANICAL PROPERTIES OF Q235 STEEL STRIP. Izvestiya. Ferrous Metallurgy. 2013;56(6):70-73. (In Russ.) https://doi.org/10.17073/0368-0797-2013-6-70-73
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