Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles
Two most common crystal structures in metals and metal alloys are body-centered cubic (bcc) and face-centered cubic (fcc) structures. The phase transitions between these structures play an important role in the production of durable and functional metal alloys. Despite their technological significan...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/169741 |
| _version_ | 1811678686494064640 |
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| author | Jiang, Yingying Duchamp, Martial Ang, Shi Jun Yan, Hongwei Tan, Teck Leong Mirsaidov, Utkur |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Jiang, Yingying Duchamp, Martial Ang, Shi Jun Yan, Hongwei Tan, Teck Leong Mirsaidov, Utkur |
| author_sort | Jiang, Yingying |
| collection | NTU |
| description | Two most common crystal structures in metals and metal alloys are body-centered cubic (bcc) and face-centered cubic (fcc) structures. The phase transitions between these structures play an important role in the production of durable and functional metal alloys. Despite their technological significance, the details of such phase transitions are largely unknown because of the challenges associated with probing these processes. Here, we describe the nanoscopic details of an fcc-to-bcc phase transition in PdCu alloy nanoparticles (NPs) using in situ heating transmission electron microscopy. Our observations reveal that the bcc phase always nucleates from the edge of the fcc NP, and then propagates across the NP by forming a distinct few-atoms-wide coherent bcc-fcc interface. Notably, this interface acts as an intermediate precursor phase for the nucleation of a bcc phase. These insights into the fcc-to-bcc phase transition are important for understanding solid - solid phase transitions in general and can help to tailor the functional properties of metals and their alloys. |
| first_indexed | 2024-10-01T02:57:12Z |
| format | Journal Article |
| id | ntu-10356/169741 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:57:12Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1697412023-08-04T15:45:40Z Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles Jiang, Yingying Duchamp, Martial Ang, Shi Jun Yan, Hongwei Tan, Teck Leong Mirsaidov, Utkur School of Materials Science and Engineering Engineering::Materials Transmission Electron Microscopy Crystal Structure Two most common crystal structures in metals and metal alloys are body-centered cubic (bcc) and face-centered cubic (fcc) structures. The phase transitions between these structures play an important role in the production of durable and functional metal alloys. Despite their technological significance, the details of such phase transitions are largely unknown because of the challenges associated with probing these processes. Here, we describe the nanoscopic details of an fcc-to-bcc phase transition in PdCu alloy nanoparticles (NPs) using in situ heating transmission electron microscopy. Our observations reveal that the bcc phase always nucleates from the edge of the fcc NP, and then propagates across the NP by forming a distinct few-atoms-wide coherent bcc-fcc interface. Notably, this interface acts as an intermediate precursor phase for the nucleation of a bcc phase. These insights into the fcc-to-bcc phase transition are important for understanding solid - solid phase transitions in general and can help to tailor the functional properties of metals and their alloys. Ministry of Education (MOE) National Research Foundation (NRF) Published version This work was supported by the Singapore National Research Foundation’s Competitive Research Program funding (NRF-CRP23-2019-0001). M.D. acknowledges the Ministry of Education of Singapore for support through MOE Tier 1 RG87/19. 2023-08-01T07:53:21Z 2023-08-01T07:53:21Z 2023 Journal Article Jiang, Y., Duchamp, M., Ang, S. J., Yan, H., Tan, T. L. & Mirsaidov, U. (2023). Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles. Nature Communications, 14(1), 104-. https://dx.doi.org/10.1038/s41467-022-35325-y 2041-1723 https://hdl.handle.net/10356/169741 10.1038/s41467-022-35325-y 36609570 2-s2.0-85145870167 1 14 104 en NRF-CRP23-2019-0001 RG87/19 Nature Communications © The Author(s) 2023. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf |
| spellingShingle | Engineering::Materials Transmission Electron Microscopy Crystal Structure Jiang, Yingying Duchamp, Martial Ang, Shi Jun Yan, Hongwei Tan, Teck Leong Mirsaidov, Utkur Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles |
| title | Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles |
| title_full | Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles |
| title_fullStr | Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles |
| title_full_unstemmed | Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles |
| title_short | Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles |
| title_sort | dynamics of the fcc to bcc phase transition in single crystalline pdcu alloy nanoparticles |
| topic | Engineering::Materials Transmission Electron Microscopy Crystal Structure |
| url | https://hdl.handle.net/10356/169741 |
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