Phenomenon of ignition and explosion of high-entropy alloys of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co under quasi-static compression
The phenomenon of ignition and explosive failure of specimens from high-entropy alloys (HEAs) of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co at quasi-static compression tests was found. It physical model is proposed. It is exhibited that the reason for this phenomenon is the release of energy of the...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2024-03-01
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| Series: | Frattura ed Integrità Strutturale |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/4834 |
| _version_ | 1797198840786321408 |
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| author | Oleksandra Zatsarna Sergiy Kotrechko Oleksandr Filatov Vadim Bondarchuk Georgiy Firstov Vladimir Dubinko |
| author_facet | Oleksandra Zatsarna Sergiy Kotrechko Oleksandr Filatov Vadim Bondarchuk Georgiy Firstov Vladimir Dubinko |
| author_sort | Oleksandra Zatsarna |
| collection | DOAJ |
| description |
The phenomenon of ignition and explosive failure of specimens from high-entropy alloys (HEAs) of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co at quasi-static compression tests was found. It physical model is proposed. It is exhibited that the reason for this phenomenon is the release of energy of the oxidation reaction; such reaction is initiated due to the heat released ahead of the shear crack tip at brittle fracture of the specimens under quasi-static compression. It is shown that ignition and failure by explosion are the specific features of brittle fracture for high-entropy alloys containing Ti-Zr-Hf, in general. This phenomenon is realised when certain critical levels of strength and ductility of these alloys are reached. The importance of these critical levels of strength and ductility lies in the fact that they predetermine the maximum permissible level of strength and brittleness for this class of HEAs, above which they lose their structural and functional properties, turning to the energetic alloys capable of explosive release of a significant amount of thermal energy. This specific feature of the high-entropy alloys containing Ti-Zr-Hf outlines the scope of their application and defines the boundary separating structural and functional high-entropy alloys from energetic high-entropy alloys.
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| first_indexed | 2024-04-24T07:06:15Z |
| format | Article |
| id | doaj.art-2f23201b8aad4583add59be71d472673 |
| institution | Directory Open Access Journal |
| issn | 1971-8993 |
| language | English |
| last_indexed | 2024-04-24T07:06:15Z |
| publishDate | 2024-03-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Frattura ed Integrità Strutturale |
| spelling | doaj.art-2f23201b8aad4583add59be71d4726732024-04-22T00:21:08ZengGruppo Italiano FratturaFrattura ed Integrità Strutturale1971-89932024-03-011868Phenomenon of ignition and explosion of high-entropy alloys of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co under quasi-static compressionOleksandra Zatsarna0https://orcid.org/0000-0003-3200-7672Sergiy Kotrechko1https://orcid.org/0000-0001-5210-4934Oleksandr Filatov2https://orcid.org/0000-0003-1691-4280Vadim Bondarchuk3Georgiy Firstov4https://orcid.org/0000-0001-7653-9166Vladimir Dubinko5https://orcid.org/0000-0002-6786-7069Kurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, 36 Vernadsky blvd., 03680 Kiev, UkraineKurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, 36 Vernadsky blvd., 03680 Kiev, UkraineKurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, 36 Vernadsky blvd., 03680 Kiev, UkraineKurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, 36 Vernadsky blvd., 03680 Kiev, UkraineKurdyumov Institute for Metal Physics of the National Academy of Sciences of Ukraine, 36 Vernadsky blvd., 03680 Kiev, UkraineNSC Kharkov Institute of Physics and Technology, Akademicheskaya Str. 1, Kharkov 61108, Ukraine The phenomenon of ignition and explosive failure of specimens from high-entropy alloys (HEAs) of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co at quasi-static compression tests was found. It physical model is proposed. It is exhibited that the reason for this phenomenon is the release of energy of the oxidation reaction; such reaction is initiated due to the heat released ahead of the shear crack tip at brittle fracture of the specimens under quasi-static compression. It is shown that ignition and failure by explosion are the specific features of brittle fracture for high-entropy alloys containing Ti-Zr-Hf, in general. This phenomenon is realised when certain critical levels of strength and ductility of these alloys are reached. The importance of these critical levels of strength and ductility lies in the fact that they predetermine the maximum permissible level of strength and brittleness for this class of HEAs, above which they lose their structural and functional properties, turning to the energetic alloys capable of explosive release of a significant amount of thermal energy. This specific feature of the high-entropy alloys containing Ti-Zr-Hf outlines the scope of their application and defines the boundary separating structural and functional high-entropy alloys from energetic high-entropy alloys. https://www.fracturae.com/index.php/fis/article/view/4834Explosive failureHigh-entropy alloysQuasi-static compressionChear crackIgnition temperature |
| spellingShingle | Oleksandra Zatsarna Sergiy Kotrechko Oleksandr Filatov Vadim Bondarchuk Georgiy Firstov Vladimir Dubinko Phenomenon of ignition and explosion of high-entropy alloys of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co under quasi-static compression Frattura ed Integrità Strutturale Explosive failure High-entropy alloys Quasi-static compression Chear crack Ignition temperature |
| title | Phenomenon of ignition and explosion of high-entropy alloys of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co under quasi-static compression |
| title_full | Phenomenon of ignition and explosion of high-entropy alloys of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co under quasi-static compression |
| title_fullStr | Phenomenon of ignition and explosion of high-entropy alloys of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co under quasi-static compression |
| title_full_unstemmed | Phenomenon of ignition and explosion of high-entropy alloys of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co under quasi-static compression |
| title_short | Phenomenon of ignition and explosion of high-entropy alloys of systems Ti-Zr-Hf-Ni-Cu, Ti-Zr-Hf-Ni-Cu-Co under quasi-static compression |
| title_sort | phenomenon of ignition and explosion of high entropy alloys of systems ti zr hf ni cu ti zr hf ni cu co under quasi static compression |
| topic | Explosive failure High-entropy alloys Quasi-static compression Chear crack Ignition temperature |
| url | https://www.fracturae.com/index.php/fis/article/view/4834 |
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