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Extended Continuous Cooling Transformation (CCT) Diagrams Determination for Additive Manufacturing Deposited Steels

Continuous cooling transformation (CCT) diagrams are widely used when heat treating steels and represent which type of phase will occur in a material as it is cooled at different cooling rates. CCT diagrams are constructed on the basis of dilatometry measurements on relatively small testing samples...

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Autores principales: Halmešová, Kristýna, Procházka, Radek, Koukolíková, Martina, Džugan, Jan, Konopík, Pavel, Bucki, Tomasz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9103246/
https://www.ncbi.nlm.nih.gov/pubmed/35591412
http://dx.doi.org/10.3390/ma15093076
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author Halmešová, Kristýna
Procházka, Radek
Koukolíková, Martina
Džugan, Jan
Konopík, Pavel
Bucki, Tomasz
author_facet Halmešová, Kristýna
Procházka, Radek
Koukolíková, Martina
Džugan, Jan
Konopík, Pavel
Bucki, Tomasz
author_sort Halmešová, Kristýna
collection PubMed
description Continuous cooling transformation (CCT) diagrams are widely used when heat treating steels and represent which type of phase will occur in a material as it is cooled at different cooling rates. CCT diagrams are constructed on the basis of dilatometry measurements on relatively small testing samples (cylindrical shape with diameter of 4mm and length of 11 mm in this study). The main aim of this work was to demonstrate the possibility of evaluating the tensile test properties using mini-tensile tests from miniature volumes (1.4 × 10(−7) m(3) for one sample) subsequent to determination of the CCT diagram and to extend a standard CCT diagram with information about strength, ductility and the estimated value of the work-hardening coefficient. Mini-tensile tests (MTT) were recently developed due to the low availability of experimental material and have already been successfully used for local mechanical property characterization of metals. CCT diagrams were constructed for 42CrMo4 steel prepared by the laser-directed energy deposition (L-DED) process, for commercially available 42CrMo4 steel conventionally manufactured (for comparison of traditional processing and AM preparation) and for H13 tool steel deposited by the selective laser melting (SLM) process.
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spelling pubmed-91032462022-05-14 Extended Continuous Cooling Transformation (CCT) Diagrams Determination for Additive Manufacturing Deposited Steels Halmešová, Kristýna Procházka, Radek Koukolíková, Martina Džugan, Jan Konopík, Pavel Bucki, Tomasz Materials (Basel) Article Continuous cooling transformation (CCT) diagrams are widely used when heat treating steels and represent which type of phase will occur in a material as it is cooled at different cooling rates. CCT diagrams are constructed on the basis of dilatometry measurements on relatively small testing samples (cylindrical shape with diameter of 4mm and length of 11 mm in this study). The main aim of this work was to demonstrate the possibility of evaluating the tensile test properties using mini-tensile tests from miniature volumes (1.4 × 10(−7) m(3) for one sample) subsequent to determination of the CCT diagram and to extend a standard CCT diagram with information about strength, ductility and the estimated value of the work-hardening coefficient. Mini-tensile tests (MTT) were recently developed due to the low availability of experimental material and have already been successfully used for local mechanical property characterization of metals. CCT diagrams were constructed for 42CrMo4 steel prepared by the laser-directed energy deposition (L-DED) process, for commercially available 42CrMo4 steel conventionally manufactured (for comparison of traditional processing and AM preparation) and for H13 tool steel deposited by the selective laser melting (SLM) process. MDPI 2022-04-23 /pmc/articles/PMC9103246/ /pubmed/35591412 http://dx.doi.org/10.3390/ma15093076 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Halmešová, Kristýna
Procházka, Radek
Koukolíková, Martina
Džugan, Jan
Konopík, Pavel
Bucki, Tomasz
Extended Continuous Cooling Transformation (CCT) Diagrams Determination for Additive Manufacturing Deposited Steels
title Extended Continuous Cooling Transformation (CCT) Diagrams Determination for Additive Manufacturing Deposited Steels
title_full Extended Continuous Cooling Transformation (CCT) Diagrams Determination for Additive Manufacturing Deposited Steels
title_fullStr Extended Continuous Cooling Transformation (CCT) Diagrams Determination for Additive Manufacturing Deposited Steels
title_full_unstemmed Extended Continuous Cooling Transformation (CCT) Diagrams Determination for Additive Manufacturing Deposited Steels
title_short Extended Continuous Cooling Transformation (CCT) Diagrams Determination for Additive Manufacturing Deposited Steels
title_sort extended continuous cooling transformation (cct) diagrams determination for additive manufacturing deposited steels
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9103246/
https://www.ncbi.nlm.nih.gov/pubmed/35591412
http://dx.doi.org/10.3390/ma15093076
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