Effect of deformation rate on low carbon steels mechanical properties

5th International Conference Recent Trends in Structural Materials

Jandrli, I.^1 ; Rekovi, S.^1 ; Brli, T.^1 ; Furlan, V.^1

University of Zagreb Faculty of Metallurgy, Aleja narodnih heroja 3, Sisak, Croatia^1

关键词: Cold plastic deformation;    Deformation rates;    Laboratory conditions;    Matlab- software;    Niobium microalloyed steel;    Static tensile tests;    Strain rate sensitivity;    Strength increase;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/461/1/012030/pdf
DOI  :  10.1088/1757-899X/461/1/012030

来源: IOP

【 摘 要 】

Study shows the influence of stretching rate on the tensile properties for two low carbon steels during cold plastic deformation. Studies were carried out at laboratory conditions at room temperature with a static tensile test, at stretching rates ranging from 5 to 30 mm / min. Influence of the stretching rate on the elongation (A), tensile strength (R m), yield stress (R e) and the ratio R e/R m were analysed by MATLAB software. For both steels, yield stress and tensile strength increase with the increase in stretching rate, while the elongation decreases for both steels. The ratio R e/R m for niobium microalloyed steel remains constant. It can be concluded that both steels are strain rate sensitive, and that only R e/R m ratio cannot be used to determine the strain rate sensitivity of the steel.