What is it about?
This paper presents the results of experimental research on the influence of temperature and strain rate on the microstructure and fracture mechanism of C25 mild commercial steel. This type of material has applicability in the construction of machines domain (for example shafts and gears).
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Why is it important?
In the paper, there were done the following experimental determinations: hot tensile stress tests were investigated over wide ranges of forming temperature and strain rate; hardness tests and fractographic examination were carried out by scanning electron microscopy. According to the results obtained, the flow stress increases with the strain rates at a constant temperature, because the dynamic recovery and dynamic recrystallization have enough time to complete at a low strain rate. The appearance of necking and its location induces the ductile fracture behavior, the voids were generated by the intercrystalline fracture highlighted by images made with a scanning electron microscope (SEM).
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This page is a summary of: Influence of Temperature and Strain Rate on Microstructure and Fracture Mechanism of Mild Steel, Procedia Manufacturing, January 2020, Elsevier, DOI: 10.1016/j.promfg.2020.05.005.
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