Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffraction
Containerless processing is able to access the deeply supercooled regime due to the absence of heterogeneous nucleation sites, for example, container walls. Therefore, it allows us to explore a possible structural transition in the supercooled state, which is usually hidden by crystallization and di...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-09-01
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| Series: | Nuclear Analysis |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2773183922000349 |
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| author | Minghui Jiang Yunpeng Gao Yongyong Wang Gong Li |
| author_facet | Minghui Jiang Yunpeng Gao Yongyong Wang Gong Li |
| author_sort | Minghui Jiang |
| collection | DOAJ |
| description | Containerless processing is able to access the deeply supercooled regime due to the absence of heterogeneous nucleation sites, for example, container walls. Therefore, it allows us to explore a possible structural transition in the supercooled state, which is usually hidden by crystallization and difficult to detect with conventional methods. CoCrFeNi high entropy alloys (HEAs) were solidified in aerodynamic levitation containerless processing in Nanoscale-ordered Materials Diffractometer (NOMAD) BL-1B instrument at Spallation Neutron Source (SNS) Oak Ridge National Lab with expectation the distinct local ordering in CoCrFeNi HEAs. The temperature dependence of local structures was investigated from room temperature to 1500 °C on NOMAD. The phase evolution of the CoCrFeNi HEA investigated using in-situ neutron diffraction shows that room temperature face-centered cubic (fcc) phase is inherited from its high-temperature (above 1400 °C) fcc cluster. |
| format | Article |
| id | doaj-art-bb7bf9d74e3942afaab7f7c6bddeddb4 |
| institution | Kabale University |
| issn | 2773-1839 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Nuclear Analysis |
| spelling | doaj-art-bb7bf9d74e3942afaab7f7c6bddeddb42025-08-20T03:42:44ZengKeAi Communications Co., Ltd.Nuclear Analysis2773-18392022-09-011310003410.1016/j.nucana.2022.100034Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffractionMinghui Jiang0Yunpeng Gao1Yongyong Wang2Gong Li3State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, ChinaSchool of Pysics, Henan Normal University, Xinxiang, 453007, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China; Corresponding author.Containerless processing is able to access the deeply supercooled regime due to the absence of heterogeneous nucleation sites, for example, container walls. Therefore, it allows us to explore a possible structural transition in the supercooled state, which is usually hidden by crystallization and difficult to detect with conventional methods. CoCrFeNi high entropy alloys (HEAs) were solidified in aerodynamic levitation containerless processing in Nanoscale-ordered Materials Diffractometer (NOMAD) BL-1B instrument at Spallation Neutron Source (SNS) Oak Ridge National Lab with expectation the distinct local ordering in CoCrFeNi HEAs. The temperature dependence of local structures was investigated from room temperature to 1500 °C on NOMAD. The phase evolution of the CoCrFeNi HEA investigated using in-situ neutron diffraction shows that room temperature face-centered cubic (fcc) phase is inherited from its high-temperature (above 1400 °C) fcc cluster.http://www.sciencedirect.com/science/article/pii/S2773183922000349High entropy alloyContainerless processingCluster |
| spellingShingle | Minghui Jiang Yunpeng Gao Yongyong Wang Gong Li Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffraction Nuclear Analysis High entropy alloy Containerless processing Cluster |
| title | Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffraction |
| title_full | Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffraction |
| title_fullStr | Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffraction |
| title_full_unstemmed | Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffraction |
| title_short | Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffraction |
| title_sort | study on structure evolution of cocrfeni high entropy alloy in containerless processing using neutron diffraction |
| topic | High entropy alloy Containerless processing Cluster |
| url | http://www.sciencedirect.com/science/article/pii/S2773183922000349 |
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