Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101681
Title: Phase selection and microstructure of slowly solidified Al-Cu-Fe alloys
Authors: Kamaeva, L. V.
Sterkhova, I. V.
Lad'yanov, V. I.
Ryltsev, R. E.
Chtchelkatchev, N. M.
Issue Date: 2020
Publisher: Elsevier B.V.
Citation: Phase selection and microstructure of slowly solidified Al-Cu-Fe alloys / L. V. Kamaeva, I. V. Sterkhova, V. I. Lad'yanov, et al. — DOI 10.1016/j.jcrysgro.2019.125318 // Journal of Crystal Growth. — 2020. — Vol. 531. — 125318.
Abstract: The search for effective methods to fabricate bulk single-phase quasicrystalline Al-Cu-Fe alloys is currently an important task. Crucial to solving this problem is to understand the mechanisms of phase formation in this system. Here we study the crystallization sequence during solidification as well as the conditions of solid phase formation in slowly solidified Al-Cu-Fe alloys in a wide range of compositions. We have also constructed concentration dependencies of undercoolability by differential thermal analysis method. These experimental results are compared with data on chemical short-range order in the liquid state determined from ab initio molecular dynamic simulations. We observe that the main features of interatomic interaction in the Al-Cu-Fe alloys are similar for both liquid and solid states and they change in the vicinity of i-phase composition. In the concentration region, where the i-phase is formed from the melt, both the undercoolability and the crystallization character depend on the temperature of the melts before cooling. © 2019 Elsevier B.V.
Keywords: A1 COMPUTER SIMULATION
A1 PHASE DIAGRAMS
A1 PHASE EQUILIBRIA
A1 SOLIDIFICATION
A2 GROWTH FROM MELT
B1 AL-CU-FE ALLOYS
COPPER ALLOYS
DIFFERENTIAL THERMAL ANALYSIS
IRON ALLOYS
MOLECULAR DYNAMICS
PHASE EQUILIBRIA
SOLIDIFICATION
TERNARY ALLOYS
AB INITIO MOLECULAR DYNAMICS
AL-CU-FE ALLOYS
CHEMICAL SHORT RANGE ORDERINGS
CONCENTRATION REGION
GROWTH FROM MELTS
INTERATOMIC INTERACTIONS
QUASICRYSTALLINE
SOLID PHASE FORMATION
ALUMINUM ALLOYS
URI: http://hdl.handle.net/10995/101681
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85074287656
PURE ID: 11098821
121fc442-9c34-43b5-9898-6c0f961a8864
ISSN: 220248
DOI: 10.1016/j.jcrysgro.2019.125318
metadata.dc.description.sponsorship: This work was supported by supercomputer of IMM UB RAS and computing resources of the federal collective usage center Complex for Simulation and Data Processing for Mega-science Facilities at NRC “Kurchatov Institute” Russian Science Foundation (grant RNF 18-12-00438 ). The experimental study was perfomed using equipment of the Shared Use Centre of Physical and Physicochemical Methods of Analysis and Study of the Properties and Surface Characteristics of Nanostructures, Materials, and Products, UdmFRC UB RAS. AIMD simulations have been carried out using ”Uran” http://ckp.nrcki.ru.
RSCF project card: 18-12-00438
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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