In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-Ga
Significant interest in the stoichiometric and off-stoichiometric Fe<sub>2</sub>MnGa alloys is based on their complex phase transition behavior and potential application. In this study, temperature- and magnetic-field-induced phase transformations in the Fe<sub>41.5</sub>Mn&l...
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MDPI AG
2023-08-01
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| Online Access: | https://www.mdpi.com/2073-4352/13/8/1242 |
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| author | Xiaoming Sun Jingyi Cui Shaofu Li Zhiyuan Ma Klaus-Dieter Liss Runguang Li Zhen Chen |
| author_facet | Xiaoming Sun Jingyi Cui Shaofu Li Zhiyuan Ma Klaus-Dieter Liss Runguang Li Zhen Chen |
| author_sort | Xiaoming Sun |
| collection | DOAJ |
| description | Significant interest in the stoichiometric and off-stoichiometric Fe<sub>2</sub>MnGa alloys is based on their complex phase transition behavior and potential application. In this study, temperature- and magnetic-field-induced phase transformations in the Fe<sub>41.5</sub>Mn<sub>28</sub>Ga<sub>30.5</sub> magnetic shape memory alloy were investigated by in situ synchrotron high-energy X-ray diffraction and in situ neutron diffraction techniques. It was found that incomplete phase transformation and phase coexistence behavior are always observed while applying and removing fields in Fe<sub>41.5</sub>Mn<sub>28</sub>Ga<sub>30.5</sub>. Typically, even at 4 K and under 0 T, or increasing the magnetic field to 11 T at 250 K, it can be directly detected that the martensite and austenite are in competition, making the phase transition incomplete. TEM observations at 300 K and 150 K indicate that the anti-phase boundaries and B2 precipitates may lead to field-induced incomplete phase transformation behavior collectively. The present study may enrich the understanding of field-induced martensitic transformation in the Fe-Mn-Ga magnetic shape memory alloys. |
| first_indexed | 2024-03-11T00:01:31Z |
| format | Article |
| id | doaj.art-a3f43d81cfe54cb293a0e52588e09b7a |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T00:01:31Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-a3f43d81cfe54cb293a0e52588e09b7a2023-11-19T00:45:24ZengMDPI AGCrystals2073-43522023-08-01138124210.3390/cryst13081242In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-GaXiaoming Sun0Jingyi Cui1Shaofu Li2Zhiyuan Ma3Klaus-Dieter Liss4Runguang Li5Zhen Chen6State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaDepartment of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing 102249, ChinaSchool of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaDepartment of Civil and Mechanical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, DenmarkXi’an Rare Metal Materials Institute Co., Ltd., Xi’an 710000, ChinaSignificant interest in the stoichiometric and off-stoichiometric Fe<sub>2</sub>MnGa alloys is based on their complex phase transition behavior and potential application. In this study, temperature- and magnetic-field-induced phase transformations in the Fe<sub>41.5</sub>Mn<sub>28</sub>Ga<sub>30.5</sub> magnetic shape memory alloy were investigated by in situ synchrotron high-energy X-ray diffraction and in situ neutron diffraction techniques. It was found that incomplete phase transformation and phase coexistence behavior are always observed while applying and removing fields in Fe<sub>41.5</sub>Mn<sub>28</sub>Ga<sub>30.5</sub>. Typically, even at 4 K and under 0 T, or increasing the magnetic field to 11 T at 250 K, it can be directly detected that the martensite and austenite are in competition, making the phase transition incomplete. TEM observations at 300 K and 150 K indicate that the anti-phase boundaries and B2 precipitates may lead to field-induced incomplete phase transformation behavior collectively. The present study may enrich the understanding of field-induced martensitic transformation in the Fe-Mn-Ga magnetic shape memory alloys.https://www.mdpi.com/2073-4352/13/8/1242magnetic shape memory alloymartensitic transformationFe-Mn-Gaincomplete phase transformation |
| spellingShingle | Xiaoming Sun Jingyi Cui Shaofu Li Zhiyuan Ma Klaus-Dieter Liss Runguang Li Zhen Chen In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-Ga Crystals magnetic shape memory alloy martensitic transformation Fe-Mn-Ga incomplete phase transformation |
| title | In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-Ga |
| title_full | In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-Ga |
| title_fullStr | In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-Ga |
| title_full_unstemmed | In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-Ga |
| title_short | In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-Ga |
| title_sort | in situ study of temperature and magnetic field induced incomplete martensitic transformation in fe mn ga |
| topic | magnetic shape memory alloy martensitic transformation Fe-Mn-Ga incomplete phase transformation |
| url | https://www.mdpi.com/2073-4352/13/8/1242 |
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