The Experts below are selected from a list of 420 Experts worldwide ranked by ideXlab platform
Yu A Stroev - One of the best experts on this subject based on the ideXlab platform.
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solid solution decomposition and guinier preston Zone formation in al cu alloys a kinetic theory with anisotropic interactions
Physical Review Materials, 2018Co-Authors: Yu A Stroev, Oleg I Gorbatov, Yu N Gornostyrev, Pavel A KorzhavyiAbstract:Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition ...
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solid solution decomposition and guinier preston Zone formation in al cu alloys a kinetic theory with anisotropic interactions
arXiv: Materials Science, 2017Co-Authors: Yu A Stroev, Oleg I Gorbatov, Yu N Gornostyrev, Pavel A KorzhavyiAbstract:Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition and microstructure formation in Al-Cu alloys as a function of temperature and alloy concentration. We show that the decomposition of the solid solution forming platelets of copper, known as Guinier-Preston (GP) Zones, includes several stages and that the transition from GP1 to GP2 Zones is determined mainly by kinetic factors. With increasing temperature, the model predicts a gradual transition from platelet-like precipitates to equiaxial ones and at intermediate temperatures both precipitate morphologies may coexist.
Pavel A Korzhavyi - One of the best experts on this subject based on the ideXlab platform.
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solid solution decomposition and guinier preston Zone formation in al cu alloys a kinetic theory with anisotropic interactions
Physical Review Materials, 2018Co-Authors: Yu A Stroev, Oleg I Gorbatov, Yu N Gornostyrev, Pavel A KorzhavyiAbstract:Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition ...
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solid solution decomposition and guinier preston Zone formation in al cu alloys a kinetic theory with anisotropic interactions
arXiv: Materials Science, 2017Co-Authors: Yu A Stroev, Oleg I Gorbatov, Yu N Gornostyrev, Pavel A KorzhavyiAbstract:Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition and microstructure formation in Al-Cu alloys as a function of temperature and alloy concentration. We show that the decomposition of the solid solution forming platelets of copper, known as Guinier-Preston (GP) Zones, includes several stages and that the transition from GP1 to GP2 Zones is determined mainly by kinetic factors. With increasing temperature, the model predicts a gradual transition from platelet-like precipitates to equiaxial ones and at intermediate temperatures both precipitate morphologies may coexist.
Oleg I Gorbatov - One of the best experts on this subject based on the ideXlab platform.
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solid solution decomposition and guinier preston Zone formation in al cu alloys a kinetic theory with anisotropic interactions
Physical Review Materials, 2018Co-Authors: Yu A Stroev, Oleg I Gorbatov, Yu N Gornostyrev, Pavel A KorzhavyiAbstract:Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition ...
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solid solution decomposition and guinier preston Zone formation in al cu alloys a kinetic theory with anisotropic interactions
arXiv: Materials Science, 2017Co-Authors: Yu A Stroev, Oleg I Gorbatov, Yu N Gornostyrev, Pavel A KorzhavyiAbstract:Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition and microstructure formation in Al-Cu alloys as a function of temperature and alloy concentration. We show that the decomposition of the solid solution forming platelets of copper, known as Guinier-Preston (GP) Zones, includes several stages and that the transition from GP1 to GP2 Zones is determined mainly by kinetic factors. With increasing temperature, the model predicts a gradual transition from platelet-like precipitates to equiaxial ones and at intermediate temperatures both precipitate morphologies may coexist.
Yu N Gornostyrev - One of the best experts on this subject based on the ideXlab platform.
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solid solution decomposition and guinier preston Zone formation in al cu alloys a kinetic theory with anisotropic interactions
Physical Review Materials, 2018Co-Authors: Yu A Stroev, Oleg I Gorbatov, Yu N Gornostyrev, Pavel A KorzhavyiAbstract:Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition ...
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solid solution decomposition and guinier preston Zone formation in al cu alloys a kinetic theory with anisotropic interactions
arXiv: Materials Science, 2017Co-Authors: Yu A Stroev, Oleg I Gorbatov, Yu N Gornostyrev, Pavel A KorzhavyiAbstract:Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition and microstructure formation in Al-Cu alloys as a function of temperature and alloy concentration. We show that the decomposition of the solid solution forming platelets of copper, known as Guinier-Preston (GP) Zones, includes several stages and that the transition from GP1 to GP2 Zones is determined mainly by kinetic factors. With increasing temperature, the model predicts a gradual transition from platelet-like precipitates to equiaxial ones and at intermediate temperatures both precipitate morphologies may coexist.
Xunli Wang - One of the best experts on this subject based on the ideXlab platform.
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in situ observation of an unusual phase transformation pathway with guinier preston Zone like precipitates in zr based bulk metallic glasses
Journal of Alloys and Compounds, 2020Co-Authors: Weixia Dong, Jiacheng Ge, Yubin Ke, Huiqiang Ying, Haiyan He, Chenyu Lu, J Almer, Xunli WangAbstract:Abstract The pathway of amorphous-to-crystalline phase transformation in Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glasses was studied using a suite of in-situ techniques. Multi-scale structure evidence reveals a five-stage pathway, analogous to the non-equilibrium transformation process with Guinier-Preston Zones during aging in precipitation-hardened alloys, by the following sequence upon isothermal annealing the alloy in the supercooled liquid region: polyamorphous phase transition, chemical phase separation, the formation of a poorly-ordered metastable phase, and the formation of a final crystalline product. The changeable incubation periods at different annealing temperatures, and the abrupt multi-scale structure changes, as well as a latent heat release in the calorimetric measurements, support the first-order nature of the phase transformation at early stages. The structure evolution in real-space indicates that the enhancement of cluster connectivity on the medium-range scale plays essential roles in the early stages of the phase transformation, while the interface-limited ordering dominates the later stages. The experimental results suggest the phase transformation pathway with “Guinier-Preston Zone-like” precipitates accompanied by the kinematic development of core-shell structures of diffuse interfaces with order parameters gradients, enabling the step-by-step decrease of free energy of the alloy system during phase transformation, which might be a characteristic behavior for multicomponent Zr-based alloys with excellent glass-forming ability.