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Open AccessArticle

Effect of Strain on Transformation Diagrams of 100Cr6 Steel

VŠB-TU Ostrava, Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 70800 Ostrava, Czech Republic
Třinecké Železárny, a.s., 73961 Třinec, Czech Republic
Author to whom correspondence should be addressed.
Crystals 2020, 10(4), 326;
Received: 5 March 2020 / Revised: 6 April 2020 / Accepted: 18 April 2020 / Published: 21 April 2020
(This article belongs to the Special Issue Crystal Plasticity)
Based on dilatometric tests, the effect of various values of previous deformation on the kinetics of austenite transformations during the cooling of 100Cr6 steel has been studied. Dilatometric tests have been performed with the use of the optical dilatometric module of the plastometer Gleeble 3800. The obtained results were compared to metallographic analyses and hardness measurements HV30. Uniaxial compression deformations were chosen as follows: 0, 0.35, and 1; note that these are true (logarithmic) deformations. The highly important finding was the absence of bainite. In addition, it has been verified that with the increasing amount of deformation, there is a further shift in the pearlitic region to higher cooling rates. The previous deformation also affected the temperature martensite start, which decreased due to deformation. The deformation value of 1 also shifted the critical cooling rate required for martensite formation from the 12 °C/s to 25 °C/s. View Full-Text
Keywords: transformation diagrams; 100Cr6 steel; dilatometric test transformation diagrams; 100Cr6 steel; dilatometric test
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Kawulok, R.; Schindler, I.; Sojka, J.; Kawulok, P.; Opěla, P.; Pindor, L.; Grycz, E.; Rusz, S.; Ševčák, V. Effect of Strain on Transformation Diagrams of 100Cr6 Steel. Crystals 2020, 10, 326.

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