PSI - Issue 43

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

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ScienceDirect

Procedia Structural Integrity 43 (2023) 270–275

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers. © 20 23 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under the responsibility of MSMF10 organizers. Abstract The article d als with phase transformations nd austenitizing behavior f the 1.2343 t ol steel. Dilatation analyses of a series of sample were performed at various cooling rates, chosen in the range from 10 °C·s -1 to 0. 05 °C·s -1 . Acqu red experimental da a were used for valuation of dilatometric curves in ord r to ap the temper ture ranges of pha e transformations of the austenite to pearlite, bainite or martensite. All experim ntal samples from dilatometric analys s were th n subjected to microstructural analyses and hardness measurements to ch racterize the microstructure and hardness for every tested he t treatment regime. At the end of the paper, the resulting CCT diagram was compared with the JMatPro software for accuracy evaluation. © 20 23 The Authors. Published by Elsevier B.V. This is an ope access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under the responsibility of MSMF10 organizers. 10th International Conference on Materials Structure and Micromechanics of Fracture Physical modeling of CCT diagram of tool steel 1.2343 Michal Krbaťa a , Maroš Eckert a , Róbert Cíger a , Marcel Kohutiar a * a Faculty of Special Technology, Alexander Dubcek University of Trenčín, Ku kyselke 469, 911 06 Trenčín, Slovakia Abstract The article deals with phase transformations and austenitizing behavior of the 1.2343 tool steel. Dilatation analyses of a series of samples were performed at various cooling rates, chosen in the range from 10 °C·s -1 to 0. 05 °C·s -1 . Acquired experimental data were used for evaluation of dilatometric curves in order to map the temperature ranges of phase transformations of the austenite to pearlite, bainite or martensite. All experimental samples from dilatometric analyses were then subjected to microstructural analyses and hardness measurements to characterize the microstructure and hardness for every tested heat treatment regime. At the end of the paper, the resulting CCT diagram was compared with the JMatPro software for accuracy evaluation. 10th International Conference on Materials Structure and Micromechanics of Fracture Physical modeling of CCT diagram of tool steel 1.2343 Michal Krbaťa a , Maroš Eckert a , Róbert Cíger a , Marcel Kohutiar a * a Faculty of Special Technology, Alexander Dubcek University of Trenčín, Ku kyselke 469, 911 06 Trenčín, Slovakia 1. Introduction Tool steel is used in a variety of applications that require specific mechanical properties (Martin et al. 2021). The heat treatment to which tool steels are exposed has a significant effect not only on the cutting performance but also on their level of utilization. Thus, we know how to adjust their resulting mechanical properties by processing (Kupalova 1991). The content of additive elements in steels changes the whole mechanism and kinetics of phase changes. As the carbon content increases, the position of the M s and M f points decreases. With a carbon content in the steel higher than 0.3%, the temperature M f drops below 0 °C. Almost all ferrite -soluble alloying elements (except Co and Al ) shift the austenite decay curves over time. In addition, carbide-forming elements such as Cr , Mo , W , V , significantly separate the area of pearlitic and bainitic transformation (so-called two noses of the decay curve are 1. Introduction Tool steel is used in a variety of applications that require specific mechanical prop rties (Martin et al. 2021). The heat treatment to which tool steels are exposed as a significant ffect not only on the cutting performance but also on their level of utilization. Thus, we know how to adjust t eir resulting m chanical properties by pr cessing (Kupalova 1991). The t t of additive lements in steels changes the whole mechanism and ki etics of phas changes. As the carbon cont nt increases, the position of the M s and M f points decreases. With a carbon content in the steel higher than 0.3%, th temperat re M f drops b low 0 °C. Almost all ferrite -soluble alloying elements (except Co and Al ) shift the austenite decay curves over time. In additi n, carbide-forming elements such as Cr , Mo , W , V , significantly separate the area of pearlitic and bainitic transformation (so-called two noses of the decay curve are Keywords: Dilatometry; Tool Steel; Austenite; Microstructure Keywords: Dilatometry; Tool Steel; Austenite; Microstructure

* Corresponding author. Tel.: +421-32-7400 235; E-mail address: marcel.kohutiar@tnuni.sk * Corresponding author Tel.: +421-32-7400 235; E-mail address: marcel.kohutiar@tnuni.sk

2452-3216 © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers. 2452-3216 © 2023 The Authors. Published by Elsevier B.V. This is an ope access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers.

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers. 10.1016/j.prostr.2022.12.270