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Created
August 11, 2022 08:29
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sle34
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Updated
August 11, 2022 08:29
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[unknown user]
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Added Creator Sandra Elder
August 11, 2022 08:29
by
sle34
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Added
Atomic-scale observation of non-classical nucleation-mediated phase transformation in a titanium alloy.pdf
August 11, 2022 08:30
by
sle34
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August 11, 2022 08:30
by
sle34
License
- https://rightsstatements.org/page/InC/1.0/
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Published
August 11, 2022 08:30
by
sle34
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August 16, 2022 16:06
by
xzx1
Acknowledgments
- Author list: Xiaoqian Fu, Xu-Dong Wang, Beikai Zhao, Qinghua Zhang, Suyang Sun, Jiang-Jing Wang2 , Wei Zhang , Lin Gu , Yangsheng Zhang, Wen-Zheng Zhang, Wen Wen , Ze Zhang, Long-qing Chen , Qian Yu and En Ma
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Updated
Publisher, Publisher Identifier (DOI), Description, and 1 more
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September 02, 2023 14:45
by
avs5190
Publisher
Publisher Identifier (DOI)
- https://doi.org/10.1038/s41563-021-01144-7
Description
A full kinetic pathway of a non-classical nucleation-induced phase transformation through metastable states is elucidated at sub-angstrom resolution in a technologically important titanium alloy.
- Two-phase titanium-based alloys are widely used in aerospace and biomedical applications, and they are obtained through phase transformations between a low-temperature hexagonal closed-packed alpha-phase and a high-temperature body-centred cubic beta-phase. Understanding how a new phase evolves from its parent phase is critical to controlling the transforming microstructures and thus material properties. Here, we report time-resolved experimental evidence, at sub-angstrom resolution, of a non-classically nucleated metastable phase that bridges the alpha-phase and the beta-phase, in a technologically important titanium-molybdenum alloy. We observed a nanosized and chemically ordered superstructure in the alpha-phase matrix; its composition, chemical order and crystal structure are all found to be different from both the parent and the product phases, but instigating a vanishingly low energy barrier for the transformation into the beta-phase. This latter phase transition can proceed instantly via vibrational switching when the molybdenum concentration in the superstructure exceeds a critical value. We expect that such a non-classical phase evolution mechanism is much more common than previously believed for solid-state transformations.
Publication Date
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September 02, 2023 14:47
by
avs5190
Acknowledgments
Author list: Xiaoqian Fu, Xu-Dong Wang, Beikai Zhao, Qinghua Zhang, Suyang Sun, Jiang-Jing Wang2 , Wei Zhang , Lin Gu , Yangsheng Zhang, Wen-Zheng Zhang, Wen Wen , Ze Zhang, Long-qing Chen , Qian Yu and En Ma
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Deleted Creator Sandra Elder
September 02, 2023 14:47
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avs5190
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Added Creator Xiaoqian Fu
September 02, 2023 14:47
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avs5190
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Added Creator Xu-Dong Wang
September 02, 2023 14:47
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avs5190
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Added Creator Beikai Zhao
September 02, 2023 14:47
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avs5190
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Added Creator Qinghua Zhang
September 02, 2023 14:47
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avs5190
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Added Creator Suyang Sun
September 02, 2023 14:47
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avs5190
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Added Creator Jiang-Jing Wang
September 02, 2023 14:47
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avs5190
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Added Creator Wei Zhang
September 02, 2023 14:47
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avs5190
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Added Creator Lin Gu
September 02, 2023 14:47
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avs5190
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Added Creator Yangsheng Zhang
September 02, 2023 14:47
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avs5190
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Added Creator Wen-Zheng Zhang
September 02, 2023 14:47
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avs5190
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Added Creator Wen Wen
September 02, 2023 14:47
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avs5190
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Added Creator Ze Zhang
September 02, 2023 14:47
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avs5190
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Added Creator Long-qing Chen
September 02, 2023 14:47
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avs5190
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Added Creator Qian Yu
September 02, 2023 14:47
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avs5190
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Added Creator En Ma
September 02, 2023 14:47
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avs5190
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Updated
April 04, 2024 10:21
by
[unknown user]