Enhanced Reversible Magnetic-Field-Induced Strain in Ni-Mn-Ga Alloy
A phase-field model was developed to simulate the ferromagnetic domain structure and martensite variant microstructure of Ni-Mn-Ga shape-memory alloy. The evolution of reversible magnetic-field-induced strain (MFIS) and associated magnetic domain/martensite variant structure were modeled under an ex...
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MDPI AG
2021-12-01
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| Online Access: | https://www.mdpi.com/2075-4701/11/12/2017 |
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| author | Pingping Wu Yongfeng Liang |
| author_facet | Pingping Wu Yongfeng Liang |
| author_sort | Pingping Wu |
| collection | DOAJ |
| description | A phase-field model was developed to simulate the ferromagnetic domain structure and martensite variant microstructure of Ni-Mn-Ga shape-memory alloy. The evolution of reversible magnetic-field-induced strain (MFIS) and associated magnetic domain/martensite variant structure were modeled under an external magnetic field. It was found that MFIS increased significantly from 0.2% to 0.28% as the temperature increased from 265 K to 285 K. In addition, compressive pre-stress efficiently enhanced the MFIS of the alloy, while tensile stress reduced MFIS. Furthermore, it was proved that there was possibility of achieving similar enhancement of MFIS by replacing compressive stress with perpendicular biaxial tensile stress. The results revealed that the residual variant induced by stress plays an important role in the reversible MFIS effect. |
| first_indexed | 2024-03-10T03:34:24Z |
| format | Article |
| id | doaj.art-9dbcc842e2f444d2ba638920188fb33b |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T03:34:24Z |
| publishDate | 2021-12-01 |
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| record_format | Article |
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| spelling | doaj.art-9dbcc842e2f444d2ba638920188fb33b2023-11-23T09:34:18ZengMDPI AGMetals2075-47012021-12-011112201710.3390/met11122017Enhanced Reversible Magnetic-Field-Induced Strain in Ni-Mn-Ga AlloyPingping Wu0Yongfeng Liang1Department of Materials Science and Engineering, Xiamen Institute of Technology, Xiamen 361021, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaA phase-field model was developed to simulate the ferromagnetic domain structure and martensite variant microstructure of Ni-Mn-Ga shape-memory alloy. The evolution of reversible magnetic-field-induced strain (MFIS) and associated magnetic domain/martensite variant structure were modeled under an external magnetic field. It was found that MFIS increased significantly from 0.2% to 0.28% as the temperature increased from 265 K to 285 K. In addition, compressive pre-stress efficiently enhanced the MFIS of the alloy, while tensile stress reduced MFIS. Furthermore, it was proved that there was possibility of achieving similar enhancement of MFIS by replacing compressive stress with perpendicular biaxial tensile stress. The results revealed that the residual variant induced by stress plays an important role in the reversible MFIS effect.https://www.mdpi.com/2075-4701/11/12/2017phase-field modelmagnetic-field-induced strainNi-Mn-Ga alloysferromagnetic shape-memory alloy |
| spellingShingle | Pingping Wu Yongfeng Liang Enhanced Reversible Magnetic-Field-Induced Strain in Ni-Mn-Ga Alloy Metals phase-field model magnetic-field-induced strain Ni-Mn-Ga alloys ferromagnetic shape-memory alloy |
| title | Enhanced Reversible Magnetic-Field-Induced Strain in Ni-Mn-Ga Alloy |
| title_full | Enhanced Reversible Magnetic-Field-Induced Strain in Ni-Mn-Ga Alloy |
| title_fullStr | Enhanced Reversible Magnetic-Field-Induced Strain in Ni-Mn-Ga Alloy |
| title_full_unstemmed | Enhanced Reversible Magnetic-Field-Induced Strain in Ni-Mn-Ga Alloy |
| title_short | Enhanced Reversible Magnetic-Field-Induced Strain in Ni-Mn-Ga Alloy |
| title_sort | enhanced reversible magnetic field induced strain in ni mn ga alloy |
| topic | phase-field model magnetic-field-induced strain Ni-Mn-Ga alloys ferromagnetic shape-memory alloy |
| url | https://www.mdpi.com/2075-4701/11/12/2017 |
| work_keys_str_mv | AT pingpingwu enhancedreversiblemagneticfieldinducedstraininnimngaalloy AT yongfengliang enhancedreversiblemagneticfieldinducedstraininnimngaalloy |