Structural phase transformations in alloys of the Cu–Pt system during ordering

Кулагина, В. В.; Chaplygina, A. A.; Popova, L. A.; Старостенков, М. Д.; Potekaev, A. I.; Клопотов, А. А.

doi:10.1007/s11182-012-9885-3

Cited by 25 publications

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“…For instance, stability of electrical, thermoelectric and mechanical properties, as well as corrosion and thermal resistance of platinum and its alloys, has made this metal the key material for modern electrical engineering, automation and telemetry, radio-engineering, and precision instrument making [1][2][3]. Obviously, the knowledge of structural-energy characteristics of defects allows the properties and behavior of a material under different conditions to be predicted and new condensed-matter systems with a targeted set of properties to be designed.…”

Section: Introductionmentioning

confidence: 99%

The Energy of Generation and Migration of Point Defects in the Ordered CuPt and CuPt3 Alloys

et al. 2015

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Using molecular dynamics simulations, the energies of formation and migration of vacancies and interstitial atoms in the ordered CuPt and CuPt 3 alloys are estimated. The energy-favorable configurations of the interstitial atoms are determined. In CuPt, high diffusion anisotropy is revealed during migration of an interstitial atom: in the ordered CuPt alloys it generally migrates along (111) planes containing Cu atoms.

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Section: Introductionmentioning

confidence: 99%

The Energy of Generation and Migration of Point Defects in the Ordered CuPt and CuPt3 Alloys

et al. 2015

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“…In other sources, an occurrence of an ordered compound, Cu 7 Pt, was predicted, containing 12.5 at.% Pt [3]. Computer experiments performed on the Monte Carlo method, showed that the alloys of the Cu -Pt different composition components undergo phase transformations "disorderorder" from the FCC to the structures of different symmetry [4,11]. This paper presents the results of a study of the structural transformations in the alloys Cu 3 Pt, CuPt, CuPt 3 (superstructure L1 2 , L1 1 , L1 3 ), containing shear antiphase boundaries (APB) in the planes {111}.…”

Section: Introductionmentioning

confidence: 99%

Details of the Formation of Superstructures in the Process of Ordering in Cu-Pt Alloys

Старостенков

Chaplygina

Romanenko

2013

KEM

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Alloys of Cu-Pt [1] are of interest for research, since the phase transitions "order - disorder" at different concentrations of components form several types of superstructures. In the alloy Cu3Pt the ordering L12 superstructure formed on the basis of fcc lattice. In the ordering of the fcc lattice of the disordered solid solution the equiatomic composition transformed into the L11 superstructure with an rhombohedral crystal lattice (a state with an L11, whose angles α, β, and γ are other than π/2). A CuPt3 in an ordered state has an L13 superstructure (a state with an L13, whose angles α, β, and γ are other than π/2). A possible existence of an ordered phase containing 20 at.% Pt was reported in the literature [2], which corresponds to the composition of Cu4Pt (type of superstructure was not defined). In other sources, an occurrence of an ordered compound, Cu7Pt, was predicted, containing 12.5 at.% Pt [3]. Computer experiments performed on the Monte Carlo method, showed that the alloys of the Cu - Pt different composition components undergo phase transformations "disorder - order" from the FCC to the structures of different symmetry [4,11]. This paper presents the results of a study of the structural transformations in the alloys Cu3Pt, CuPt, CuPt3 (superstructure L12, L11, L13), containing shear antiphase boundaries (APB) in the planes {111}.

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