Elastic constants of equiatomic Fe–Ni Invar alloy single crystal
In a disordered fcc structure, the equiatomic Fe–Ni alloy is of great interest as a soft magnetic Invar alloy with a near zero or low thermal expansion coefficient. In the L10 ordered phase, it is of interest as a potential high-performance permanent magnet alloy. In this work, the first detailed me...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2023-11-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0174535 |
| _version_ | 1797404780290637824 |
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| author | Rahulkumar Sunil Singh Sivaraman Guruswamy |
| author_facet | Rahulkumar Sunil Singh Sivaraman Guruswamy |
| author_sort | Rahulkumar Sunil Singh |
| collection | DOAJ |
| description | In a disordered fcc structure, the equiatomic Fe–Ni alloy is of great interest as a soft magnetic Invar alloy with a near zero or low thermal expansion coefficient. In the L10 ordered phase, it is of interest as a potential high-performance permanent magnet alloy. In this work, the first detailed measurements of the elastic constants in a [001]-oriented Fe-50 at. % Ni alloy single crystal under a no magnetic field condition were made using the resonant ultrasound spectroscopy technique. The elastic constants measured allow one to understand the nature of atomic bonding in a material and the mechanical response to applied stress. The single crystal sample having a rectangular parallelepiped shape was prepared from a single crystal grown using the vertical Bridgman technique. The elastic constants C11, C12, and C44 were obtained from the resonant frequencies observed over a frequency range of 100–900 kHz. Using these C11, C12, and C44 values, Young’s modulus, shear modulus, bulk modulus, and Poisson’s ratio were calculated to be 99.1 GPa, 73.4 GPa, 176.7 GPa, and 0.20, respectively. The large anisotropy factor of 3.29 highlights the strong directional dependence of the material’s mechanical behavior. |
| first_indexed | 2024-03-09T02:59:58Z |
| format | Article |
| id | doaj.art-5a8a90cb2ab743f6816b3ec99c36cc3b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-03-09T02:59:58Z |
| publishDate | 2023-11-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-5a8a90cb2ab743f6816b3ec99c36cc3b2023-12-04T17:18:29ZengAIP Publishing LLCAIP Advances2158-32262023-11-011311115112115112-710.1063/5.0174535Elastic constants of equiatomic Fe–Ni Invar alloy single crystalRahulkumar Sunil Singh0Sivaraman Guruswamy1Department of Metallurgical Engineering, University of Utah, Salt Lake City, Utah 84112, USADepartment of Metallurgical Engineering, University of Utah, Salt Lake City, Utah 84112, USAIn a disordered fcc structure, the equiatomic Fe–Ni alloy is of great interest as a soft magnetic Invar alloy with a near zero or low thermal expansion coefficient. In the L10 ordered phase, it is of interest as a potential high-performance permanent magnet alloy. In this work, the first detailed measurements of the elastic constants in a [001]-oriented Fe-50 at. % Ni alloy single crystal under a no magnetic field condition were made using the resonant ultrasound spectroscopy technique. The elastic constants measured allow one to understand the nature of atomic bonding in a material and the mechanical response to applied stress. The single crystal sample having a rectangular parallelepiped shape was prepared from a single crystal grown using the vertical Bridgman technique. The elastic constants C11, C12, and C44 were obtained from the resonant frequencies observed over a frequency range of 100–900 kHz. Using these C11, C12, and C44 values, Young’s modulus, shear modulus, bulk modulus, and Poisson’s ratio were calculated to be 99.1 GPa, 73.4 GPa, 176.7 GPa, and 0.20, respectively. The large anisotropy factor of 3.29 highlights the strong directional dependence of the material’s mechanical behavior.http://dx.doi.org/10.1063/5.0174535 |
| spellingShingle | Rahulkumar Sunil Singh Sivaraman Guruswamy Elastic constants of equiatomic Fe–Ni Invar alloy single crystal AIP Advances |
| title | Elastic constants of equiatomic Fe–Ni Invar alloy single crystal |
| title_full | Elastic constants of equiatomic Fe–Ni Invar alloy single crystal |
| title_fullStr | Elastic constants of equiatomic Fe–Ni Invar alloy single crystal |
| title_full_unstemmed | Elastic constants of equiatomic Fe–Ni Invar alloy single crystal |
| title_short | Elastic constants of equiatomic Fe–Ni Invar alloy single crystal |
| title_sort | elastic constants of equiatomic fe ni invar alloy single crystal |
| url | http://dx.doi.org/10.1063/5.0174535 |
| work_keys_str_mv | AT rahulkumarsunilsingh elasticconstantsofequiatomicfeniinvaralloysinglecrystal AT sivaramanguruswamy elasticconstantsofequiatomicfeniinvaralloysinglecrystal |