Metallurgical Processing of CoCrFeNi High-Entropy Alloy
High-entropy alloys (HEA) is a group of metallic materials that is currently experiencing great development in materials science. While conventional alloys are based on a majority of a primary element with some number of added elements, HEAs are based on multiple (usually conventional alloys are bas...
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Polish Academy of Sciences
2024-12-01
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| Series: | Archives of Foundry Engineering |
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| Online Access: | https://journals.pan.pl/Content/133701/AFE%204_2024_07.pdf |
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| author | P. Müller A. Zadera L. Čamek M. Myška V. Pernica |
| author_facet | P. Müller A. Zadera L. Čamek M. Myška V. Pernica |
| author_sort | P. Müller |
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| description | High-entropy alloys (HEA) is a group of metallic materials that is currently experiencing great development in materials science. While conventional alloys are based on a majority of a primary element with some number of added elements, HEAs are based on multiple (usually conventional alloys are based on a majority of a primary element with some number of added elements, HEAs are based on multiple (usually more than 5) elements that reach equimolar/equiatomic content. With the right combination of elements, properties can be achieved that could predispose HEAs for practical applications. In the fabrication of HEAs in previous research, pure metals have been predominantly used as the charging material. However, the use of common industrial charge with limited purity is crucial for the more economically viable use of HEAs in industry. Such a charge material may contain accompanying elements which may have an undesirable effect on the properties of the alloy. In order to achieve optimum alloy properties, it is necessary to minimise their content using various metallurgical processes The aim of the work was the metallurgical processing of CoCrFeNi alloy melted from scrap metal in an induction furnace. The desired reduction of carbon (to 100 ppm) and nitrogen content (from 660 to ~60 ppm) was reached by using carbon reaction under vacuum. Significant reduction in oxygen content (to ~120 ppm) was reached after a deoxidation with aluminium and slight reduction in sulphur content (~25%, to 120 ppm) was reached after a desulphurisation with rare earth metals. |
| format | Article |
| id | doaj-art-1b532b2d258b40eb9a99da1dcabdfd30 |
| institution | Kabale University |
| issn | 2299-2944 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Foundry Engineering |
| spelling | doaj-art-1b532b2d258b40eb9a99da1dcabdfd302025-01-27T10:10:36ZengPolish Academy of SciencesArchives of Foundry Engineering2299-29442024-12-01vol. 24No 45662https://doi.org/10.24425/afe.2024.151310Metallurgical Processing of CoCrFeNi High-Entropy AlloyP. Müller0https://orcid.org/0000-0002-3141-6776A. Zadera1https://orcid.org/0000-0002-0555-370XL. Čamek2https://orcid.org/0000-0002-2835-2054M. Myška3https://orcid.org/0000-0003-2079-9350V. Pernica4https://orcid.org/0000-0002-1025-4579Brno University of Technology, Czech RepublicBrno University of Technology, Czech RepublicBrno University of Technology, Czech RepublicBrno University of Technology, Czech RepublicBrno University of Technology, Czech RepublicHigh-entropy alloys (HEA) is a group of metallic materials that is currently experiencing great development in materials science. While conventional alloys are based on a majority of a primary element with some number of added elements, HEAs are based on multiple (usually conventional alloys are based on a majority of a primary element with some number of added elements, HEAs are based on multiple (usually more than 5) elements that reach equimolar/equiatomic content. With the right combination of elements, properties can be achieved that could predispose HEAs for practical applications. In the fabrication of HEAs in previous research, pure metals have been predominantly used as the charging material. However, the use of common industrial charge with limited purity is crucial for the more economically viable use of HEAs in industry. Such a charge material may contain accompanying elements which may have an undesirable effect on the properties of the alloy. In order to achieve optimum alloy properties, it is necessary to minimise their content using various metallurgical processes The aim of the work was the metallurgical processing of CoCrFeNi alloy melted from scrap metal in an induction furnace. The desired reduction of carbon (to 100 ppm) and nitrogen content (from 660 to ~60 ppm) was reached by using carbon reaction under vacuum. Significant reduction in oxygen content (to ~120 ppm) was reached after a deoxidation with aluminium and slight reduction in sulphur content (~25%, to 120 ppm) was reached after a desulphurisation with rare earth metals.https://journals.pan.pl/Content/133701/AFE%204_2024_07.pdfhigh-entropy alloyscocrfenidecarburisationdeoxidationdesulphurisation |
| spellingShingle | P. Müller A. Zadera L. Čamek M. Myška V. Pernica Metallurgical Processing of CoCrFeNi High-Entropy Alloy Archives of Foundry Engineering high-entropy alloys cocrfeni decarburisation deoxidation desulphurisation |
| title | Metallurgical Processing of CoCrFeNi High-Entropy Alloy |
| title_full | Metallurgical Processing of CoCrFeNi High-Entropy Alloy |
| title_fullStr | Metallurgical Processing of CoCrFeNi High-Entropy Alloy |
| title_full_unstemmed | Metallurgical Processing of CoCrFeNi High-Entropy Alloy |
| title_short | Metallurgical Processing of CoCrFeNi High-Entropy Alloy |
| title_sort | metallurgical processing of cocrfeni high entropy alloy |
| topic | high-entropy alloys cocrfeni decarburisation deoxidation desulphurisation |
| url | https://journals.pan.pl/Content/133701/AFE%204_2024_07.pdf |
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