Fracture of Fe<sub>95</sub>Ni<sub>5</sub> Alloys with Gradient-Grained Structure under Uniaxial Tension
The fracture behavior of single- (fcc) and two-phase (fcc + bcc) Fe<sub>95</sub>Ni<sub>5</sub> samples with gradient-grained structure, under uniaxial tension, was analyzed via molecular dynamics simulation. The study revealed that fracture initiation and propagation is alway...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/7/1308 |
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| author | Aleksandr Korchuganov Dmitrij Kryzhevich Konstantin Zolnikov |
| author_facet | Aleksandr Korchuganov Dmitrij Kryzhevich Konstantin Zolnikov |
| author_sort | Aleksandr Korchuganov |
| collection | DOAJ |
| description | The fracture behavior of single- (fcc) and two-phase (fcc + bcc) Fe<sub>95</sub>Ni<sub>5</sub> samples with gradient-grained structure, under uniaxial tension, was analyzed via molecular dynamics simulation. The study revealed that fracture initiation and propagation is always associated with grain boundaries. The fracture process develops in three stages. In the first stage, nanopores are formed in the boundaries of coarse grains. The total volume of nanopores at this stage increases slowly due to the formation of new nanopores. The second stage is characterized by a rapid increase in the total nanopore volume due to the formation of nanopores, their growth along the grain boundaries, and their coalescence. At the third stage, the total nanopore volume increases linearly with deformation due to the growth of the largest nanopores. Fracture of two-phase samples begins at higher strains compared to a single-phase sample. With an increase in the volume fraction of bcc lamellae in the original sample, the number of nanopores at the third stage of fracture decreases and tends to one. |
| first_indexed | 2024-03-11T00:50:04Z |
| format | Article |
| id | doaj.art-a52c41c84a104d438a8d6cc831fa417c |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T00:50:04Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-a52c41c84a104d438a8d6cc831fa417c2023-11-18T20:30:56ZengMDPI AGMetals2075-47012023-07-01137130810.3390/met13071308Fracture of Fe<sub>95</sub>Ni<sub>5</sub> Alloys with Gradient-Grained Structure under Uniaxial TensionAleksandr Korchuganov0Dmitrij Kryzhevich1Konstantin Zolnikov2Institute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences, Akademicheskii 2/4, Tomsk 634055, RussiaInstitute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences, Akademicheskii 2/4, Tomsk 634055, RussiaInstitute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences, Akademicheskii 2/4, Tomsk 634055, RussiaThe fracture behavior of single- (fcc) and two-phase (fcc + bcc) Fe<sub>95</sub>Ni<sub>5</sub> samples with gradient-grained structure, under uniaxial tension, was analyzed via molecular dynamics simulation. The study revealed that fracture initiation and propagation is always associated with grain boundaries. The fracture process develops in three stages. In the first stage, nanopores are formed in the boundaries of coarse grains. The total volume of nanopores at this stage increases slowly due to the formation of new nanopores. The second stage is characterized by a rapid increase in the total nanopore volume due to the formation of nanopores, their growth along the grain boundaries, and their coalescence. At the third stage, the total nanopore volume increases linearly with deformation due to the growth of the largest nanopores. Fracture of two-phase samples begins at higher strains compared to a single-phase sample. With an increase in the volume fraction of bcc lamellae in the original sample, the number of nanopores at the third stage of fracture decreases and tends to one.https://www.mdpi.com/2075-4701/13/7/1308fracturecrackphase transitionuniaxial tensiongrain boundarymolecular dynamics |
| spellingShingle | Aleksandr Korchuganov Dmitrij Kryzhevich Konstantin Zolnikov Fracture of Fe<sub>95</sub>Ni<sub>5</sub> Alloys with Gradient-Grained Structure under Uniaxial Tension Metals fracture crack phase transition uniaxial tension grain boundary molecular dynamics |
| title | Fracture of Fe<sub>95</sub>Ni<sub>5</sub> Alloys with Gradient-Grained Structure under Uniaxial Tension |
| title_full | Fracture of Fe<sub>95</sub>Ni<sub>5</sub> Alloys with Gradient-Grained Structure under Uniaxial Tension |
| title_fullStr | Fracture of Fe<sub>95</sub>Ni<sub>5</sub> Alloys with Gradient-Grained Structure under Uniaxial Tension |
| title_full_unstemmed | Fracture of Fe<sub>95</sub>Ni<sub>5</sub> Alloys with Gradient-Grained Structure under Uniaxial Tension |
| title_short | Fracture of Fe<sub>95</sub>Ni<sub>5</sub> Alloys with Gradient-Grained Structure under Uniaxial Tension |
| title_sort | fracture of fe sub 95 sub ni sub 5 sub alloys with gradient grained structure under uniaxial tension |
| topic | fracture crack phase transition uniaxial tension grain boundary molecular dynamics |
| url | https://www.mdpi.com/2075-4701/13/7/1308 |
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