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Hardening of Cylindrical Bars with Water Impinging Jet Quenching Technique
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology. Division of Engineering Materials Department of Management and Engineering, Linköping University .ORCID iD: 0000-0001-7026-531X
Ericsson AB .ORCID iD: 0000-0002-3315-5610
SSAB Special Steel.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology. Division of Energy Systems Department of Management and Engineering Linköping University.ORCID iD: 0000-0003-3472-4210
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2024 (English)In: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 95, no 6, article id 2300884Article in journal (Refereed) Published
Abstract [en]

Hardening of carbon steel products by austenitization and immersion in a quenching medium is a widely used heat treatment to obtain a hard and strong martensitic structure. To avoid the undesired consequences, such as residual stresses or insufficient hardening depth, the cooling rates must be accurately measured and controlled. This can be achieved using the impinging water jet quenching technique. The aim of this work is to perform hardening of four low-alloyed 70 mm cylindrical carbon steel bars, using impinging water jet quenching technique with different jet flow rates, and to analyze its effect on thermal evolution and residual stresses. The temperature evolution during quenching experiments is recorded and used as input to a comprehensive quenching model to predict phase transformations, final hardness, and residual stresses of cylindrical bars. All four quenching experiments result in a fully hardened martensitic state. Furthermore, a decrease in jets’ flow rate, within a certain interval, results in different thermal histories and in lower compressive residual stresses on the surface. The results from quenching simulations show promising hardness, microstructure, and residual stress predictions that are validated by hardness measurements, optical microscopy, and residual stress analysis using X-Ray diffraction method.

Place, publisher, year, edition, pages
Wiley , 2024. Vol. 95, no 6, article id 2300884
Keywords [en]
hardening, impinging jet quenching, machine learning, martensite, residual stresses
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:hig:diva-43917DOI: 10.1002/srin.202300884ISI: 001180262600001Scopus ID: 2-s2.0-85186889344OAI: oai:DiVA.org:hig-43917DiVA, id: diva2:1845158
Available from: 2024-03-18 Created: 2024-03-18 Last updated: 2024-06-11Bibliographically approved

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Romanov, PavelMoshfegh, BahramCalmunger, Mattias

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