ArticleNature materials2022
Atomic-scale observation of non-classical nucleation-mediated phase transformation in a titanium alloy.
Article in Nature materials, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed.
- 33 Unresolved Questions in Nanoscience and Nanotechnology.ACS nano · 2025Article
- Kinetic pathways of solid-solid phase transitions dictated by short-range interactions.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Mechanical quenching phenomenon in diamond.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Microscopic mechanisms of pressure-induced amorphous-amorphous transitions and crystallisation in silicon.Nature communications · 2024Article
- IrNational science review · 2023Article
- Study of Phase Evolution Behavior of Ti6Al4V/Inconel 718 by Pulsed Laser Melting Deposition.Materials (Basel, Switzerland) · 2023Article
- Dynamics of the fcc-to-bcc phase transition in single-crystalline PdCu alloy nanoparticles.Nature communications · 2023Article
- The effect of surface nucleation modulation on the mechanical and biocompatibility of metal-polymer biomaterials.Frontiers in bioengineering and biotechnology · 2023Article
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15 authors.
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Abstract
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 α-phase and a high-temperature body-centred cubic β-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-ångström resolution, of a non-classically nucleated metastable phase that bridges the α-phase and the β-phase, in a technologically important titanium-molybdenum alloy. We observed a nanosized and chemically ordered superstructure in the α-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 β-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.
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