The magnetization and magnetoresistance of Ni46Mn23Ga22Co5Cu4 shape memory microwires after mechanical training
Magnetization and magnetoresistance are significant for the application of Ni-Mn-Ga shape memory alloys. The Ni46Mn23Ga22Co5Cu4 microwires with excellent mechanical properties were selected to investigate the influence of mechanical training on the microstructure and magnetic properties. The largest...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423000741 |
| _version_ | 1797858851089809408 |
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| author | Jiajie Gao Zhiyi Ding Shiwei Fu Kunyu Wang Lin Ma Jie Zhu |
| author_facet | Jiajie Gao Zhiyi Ding Shiwei Fu Kunyu Wang Lin Ma Jie Zhu |
| author_sort | Jiajie Gao |
| collection | DOAJ |
| description | Magnetization and magnetoresistance are significant for the application of Ni-Mn-Ga shape memory alloys. The Ni46Mn23Ga22Co5Cu4 microwires with excellent mechanical properties were selected to investigate the influence of mechanical training on the microstructure and magnetic properties. The largest change of magnetization (ΔM) and magnetoresistance fluctuations were found after training 10k cycles. Furthermore, the microstructure and magnetic configuration were studied by TEM, GPA, and MFM to investigate the mechanical training effect and the internal mechanism. Nano-precipitated phases were found embedded in the matrix and the dislocation stacking around the precipitate induced a local strain field which could be released during mechanical training. The magnetic domain was transformed from indistinct into strip-type after training, which affects the magnetic properties of microwires. This work provides an idea for improving the magnetic and magnetoresistance performance and building a link between microstructures and electric signals of shape memory alloys. |
| first_indexed | 2024-04-09T21:20:02Z |
| format | Article |
| id | doaj.art-f114f1a11ce94b60a01fe475f4afda78 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:20:02Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-f114f1a11ce94b60a01fe475f4afda782023-03-28T06:46:01ZengElsevierJournal of Materials Research and Technology2238-78542023-03-012311201129The magnetization and magnetoresistance of Ni46Mn23Ga22Co5Cu4 shape memory microwires after mechanical trainingJiajie Gao0Zhiyi Ding1Shiwei Fu2Kunyu Wang3Lin Ma4Jie Zhu5State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 30 Xueyuan Rd., Beijing 100083, PR ChinaSchool of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 30 Xueyuan Rd., Beijing 100083, PR ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 30 Xueyuan Rd., Beijing 100083, PR ChinaKey Laboratory of Advanced Functional Materials, Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 30 Xueyuan Rd., Beijing 100083, PR China; Corresponding author.Magnetization and magnetoresistance are significant for the application of Ni-Mn-Ga shape memory alloys. The Ni46Mn23Ga22Co5Cu4 microwires with excellent mechanical properties were selected to investigate the influence of mechanical training on the microstructure and magnetic properties. The largest change of magnetization (ΔM) and magnetoresistance fluctuations were found after training 10k cycles. Furthermore, the microstructure and magnetic configuration were studied by TEM, GPA, and MFM to investigate the mechanical training effect and the internal mechanism. Nano-precipitated phases were found embedded in the matrix and the dislocation stacking around the precipitate induced a local strain field which could be released during mechanical training. The magnetic domain was transformed from indistinct into strip-type after training, which affects the magnetic properties of microwires. This work provides an idea for improving the magnetic and magnetoresistance performance and building a link between microstructures and electric signals of shape memory alloys.http://www.sciencedirect.com/science/article/pii/S2238785423000741Magnetic propertiesMechanical trainingMagnetoresistanceShape memory microwiresMartensitic transformation |
| spellingShingle | Jiajie Gao Zhiyi Ding Shiwei Fu Kunyu Wang Lin Ma Jie Zhu The magnetization and magnetoresistance of Ni46Mn23Ga22Co5Cu4 shape memory microwires after mechanical training Journal of Materials Research and Technology Magnetic properties Mechanical training Magnetoresistance Shape memory microwires Martensitic transformation |
| title | The magnetization and magnetoresistance of Ni46Mn23Ga22Co5Cu4 shape memory microwires after mechanical training |
| title_full | The magnetization and magnetoresistance of Ni46Mn23Ga22Co5Cu4 shape memory microwires after mechanical training |
| title_fullStr | The magnetization and magnetoresistance of Ni46Mn23Ga22Co5Cu4 shape memory microwires after mechanical training |
| title_full_unstemmed | The magnetization and magnetoresistance of Ni46Mn23Ga22Co5Cu4 shape memory microwires after mechanical training |
| title_short | The magnetization and magnetoresistance of Ni46Mn23Ga22Co5Cu4 shape memory microwires after mechanical training |
| title_sort | magnetization and magnetoresistance of ni46mn23ga22co5cu4 shape memory microwires after mechanical training |
| topic | Magnetic properties Mechanical training Magnetoresistance Shape memory microwires Martensitic transformation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423000741 |
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