Crystal phase-controlled synthesis, properties and applications …
网页2015年6月12日 · In recent years, the crystal phase control of noble metal nanomaterials has emerged as an efficient and versatile strategy to tune their properties. In this tutorial review, we will give an overview of the latest research progress in the crystal phase-controlled synthesis of noble metal nanomaterials.
Mechanism of stress- and thermal-induced fct → hcp → fcc crystal ...
网页2022年4月18日 · Molecular dynamics (MD) simulations have been increasingly used to explore the fct → hcp → fcc crystal structure change related to the α 2 (α)↔γ phase transformation in TiAl alloys, and it has been proven to be an effective and accurate approach for revealing the atomic mechanism of phase transformations [[30], …
Structure of the austenite (fcc) and martensite (fct) crystal phases
网页Tl, the crystal structure of the parent phase is face-centered cubic (fcc), while upon cooling these alloys undergo a martensitic transformation to a face-cen- tered tetragonal (fct) structure...
Decoding of crystal synthesis of fcc-hcp reversible transition for ...
网页2021年7月1日 · Innovatively, we present the pathway of phase change from the most common phases of transition metal fcc to the potential electroactive hcp phase. The directional mapping of the facet switching is systematically investigated as a key reference for experimental synthesis and facet control.
Crystal structures of Fe4C vs. Fe4N analysed by DFT calculations: …
网页2017年11月1日 · Knowledge of the thermodynamic and structural properties of iron carbide and nitride phases is crucial for understanding phase transformations and related microstructure formation in steels. While the existence and crystal structure of the primitive cubic fcc-based γ′-Fe 4 N 1-z phase is experimentally well-established, there is …
Selective control of fcc and hcp crystal structures in Au–Ru solid ...
网页2018年2月6日 · By precisely tuning the reduction speed of the metal precursors, we selectively control the crystal structure of alloy nanoparticles, and are able to selectively synthesize fcc and hcp AuRu3...
Structurally inhomogeneous fct-martensite in alloys based on the …
网页2012年7月21日 · In the present paper we describe the conditions of implementation of the fcc → fct transformation in alloys of the Mn – Cu system containing two isomorphic fcc phases of different compositions, the special features of the structure of the martensite formed as a result, the mechanisms of its straining, and the nature of the hardening.
Phys. Rev. Materials 2, 093611 (2018) - Hidden pathway during …
网页2018年9月28日 · As a classical structural phase transformation with a long history in physical metallurgy, the face-centered cubic (fcc) to body-centered cubic/tetragonal (bcc/bct) martensitic transformation in steels is one of the most studied crystal structure changes induced by either temperature or stress.
Intermetallic Nanoarchitectures for Efficient Electrocatalysis
网页2022年11月2日 · Fully ordered face-centered tetragonal (fct) FePt nanoparticles (NPs) are synthesized by thermal annealing of the MgO-coated dumbbell-like FePt-Fe3O4 NPs followed by acid washing to remove MgO. These fct-FePt NPs show strong ferromagnetism with room temp. coercivity reaching 33 kOe.
Phase diagrams guide synthesis of highly ordered intermetallic
网页2022年12月10日 · A high ordering of 56% was realized for the PtFe-T1000-2h, but the crystal size increased significantly to 4.1 nm. Therefore, PtFe-T900-6h represented the optimal sample that exhibited the...