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Engineering Review : International journal for publishing of original researches from the aspect of structural analysis, materials and new technologies in the field of mechanical engineering, shipbuilding, fundamental engineering sciences, computer sciences, electrical engin, Vol. 42 No. 1, 2022.

Original scientific paper

https://doi.org/10.30765/er.1745

Stress distribution at different deformation degrees in low carbon steel during cold deformation

Tin Brlić ; Faculty of Metallurgy, University of Zagreb, Aleja narodnih heroja 3, 44000 Sisak
Ladislav Lazić ; Faculty of Metallurgy, University of Zagreb, Aleja narodnih heroja 3, 44000 Sisak
Mladen Franz ; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10002 Zagreb
Ivan Jandrlić ; Faculty of Metallurgy, University of Zagreb, Aleja narodnih heroja 3, 44000 Sisak
Stoja Rešković ; Faculty of Metallurgy, University of Zagreb, Aleja narodnih heroja 3, 44000 Sisak

Full text: english pdf 388 Kb

page 103-108

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Abstract

The temperature change, i.e. stresses of low carbon steel during the cold deformation process was investigated in this study. During static tensile test, temperature changes were examined using thermography at different deformation degrees. It was found that there are temperature changes in the deformation zone during the cold deformation. The increase in temperature changes in the deformation zone during cold deformation occurs with an increase in the deformation degree. The largest localization of temperature change was measured at the moment of the test sample fracture when the maximum temperature change was 8.45 °C. A higher amount of temperature change of 5.39 °C was determined at tensile strength compared to the proportionality limit amount of -0.97 °C. It was found that there are differences between the amounts of temperature changes in the range from 0.87 °C to 1.91 °C with increasing of deformation degree of the tested steel. Calculated stress amounts proved and show the tendency that stress amounts increase as the temperature change increases in low carbon steel by increasing of deformation degree during cold deformation. It was determined deviations of the calculated stress amounts due to using the mathematical model for low carbon with niobium at the start of plastic flow.

Keywords

low carbon steel; thermography; temperature distribution; stress; cold deformation

Hrčak ID:

279669

URI

https://hrcak.srce.hr/279669

Publication date:

14.7.2022.

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