Thermodynamics of grain boundary segregation, interfacial spinodal and their relevance for nucleation during solid-solid phase transitions
Sign Up to like & getrecommendations! Published in 2019 at "Acta Materialia"
DOI: 10.1016/j.actamat.2019.02.005
Abstract: Abstract Grain boundary segregation, embrittlement and phase nucleation are interconnected phenomena that are often treated separately, which is partly due to limitations of the current models to predict grain boundary segregation in non-ideal solid solutions.… read more here.
Keywords: grain boundary; boundary segregation; grain; phase ... See more keywords
Modeling grain boundary segregation by prediction of all the necessary parameters
Sign Up to like & getrecommendations! Published in 2019 at "Acta Materialia"
DOI: 10.1016/j.actamat.2019.03.037
Abstract: Abstract A thermodynamic model of equilibrium grain boundary segregation in real binary systems is proposed which is based on the prediction of all the necessary parameters. These parameters are (i) the standard enthalpy and (ii)… read more here.
Keywords: grain boundary; necessary parameters; prediction necessary; boundary segregation ... See more keywords
Phase boundary segregation-induced strengthening and discontinuous yielding in ultrafine-grained duplex medium-Mn steels
Sign Up to like & getrecommendations! Published in 2020 at "Acta Materialia"
DOI: 10.1016/j.actamat.2020.09.007
Abstract: Abstract The combination of different phase constituents to realize a mechanical composite effect for superior strength-ductility synergy has become an important strategy in microstructure design in advanced high-strength steels. Introducing multiple phases in the microstructure… read more here.
Keywords: segregation; boundary segregation; phase boundary; medium steels ... See more keywords
Effect of grain boundary segregation of Co or Ti on cyclic deformation of aluminium bi-crystals
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Fatigue"
DOI: 10.1016/j.ijfatigue.2017.01.038
Abstract: Abstract There exist many factors affecting fatigue behavior of metallic materials, among them the effect of grain boundary (GB) segregation of alloying elements remains largely unexplored. To exploit this factor, an atomistic simulation is performed… read more here.
Keywords: grain boundary; boundary segregation; effect grain; deformation ... See more keywords
Effects of the evolution of electronic properties on twin-boundary segregation energies of zirconium from first-principles calculations
Sign Up to like & getrecommendations! Published in 2017 at "Materials Letters"
DOI: 10.1016/j.matlet.2017.05.093
Abstract: Abstract The twin-boundary segregation energies (ETBS) of {10–12} tension twins and {10–11} compression twins for Zr-X (X = Sn, Fe, Cr, Nb) binary alloys are computed using first-principles calculations. Additionally, the effects of atomic radius and electronic… read more here.
Keywords: boundary segregation; electronic properties; segregation energies; twin boundary ... See more keywords
Kinetics of grain boundary segregation in multicomponent systems – The example of a Mo-C-B-O system
Sign Up to like & getrecommendations! Published in 2018 at "Scripta Materialia"
DOI: 10.1016/j.scriptamat.2018.03.011
Abstract: Abstract A model for kinetics of segregation of several interstitial and substitutional components to different kinds of traps at grain boundaries is derived by applying the Thermodynamic Extremal Principle. Evolution equations for the site fractions… read more here.
Keywords: kinetics grain; grain boundary; boundary segregation; segregation multicomponent ... See more keywords
Atomic-resolution Observations of Grain Boundary Segregation in Multiphase Ceramics by Aberration-corrected STEM
Sign Up to like & getrecommendations! Published in 2020 at "Microscopy and Microanalysis"
DOI: 10.1017/s1431927620017432
Abstract: segregation behavior at grain boundaries for a three-phase ceramic Al2O3-MgAl2O4-8 mole% Y2O3 stabilized cubic ZrO2 (YSZ) made under different processing conditions: (1) conventional sintering, (2) flash sintering, and (3) spark plasma sintering (SPS) [1,2] .… read more here.
Keywords: grain boundary; atomic resolution; resolution observations; observations grain ... See more keywords
Effect of grain boundary segregation on aging resistance and mechanical properties of tetravalent element-doped 3Y-TZP ceramics for dental restoration
Sign Up to like & getrecommendations! Published in 2023 at "International Journal of Smart and Nano Materials"
DOI: 10.1080/19475411.2023.2197866
Abstract: ABSTRACT In the humid oral environment, 3Y-TZP ceramics always suffer from low-temperature degradation (LTD) for a long time, which results in the degradation of mechanical properties and catastrophic failure. The low-temperature degradation (LTD) and mechanical… read more here.
Keywords: element doped; doped tzp; grain boundary; boundary segregation ... See more keywords
Learning Grain-Boundary Segregation: From First Principles to Polycrystals.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.046102
Abstract: The segregation of solute atoms at grain boundaries (GBs) can strongly impact the structural and functional properties of polycrystals. Yet, due to the limited availability of simulation tools to study polycrystals at the atomistic scale… read more here.
Keywords: segregation first; grain boundary; boundary segregation; learning grain ... See more keywords
Effect of Grain-Boundary Segregation on the Diffusion of Atoms in Grain Boundaries in Copper-Based Systems
Sign Up to like & getrecommendations! Published in 2020 at "Russian Metallurgy (Metally)"
DOI: 10.1134/s0036029520100158
Abstract: The influence of the segregation energy on the diffusion of second-component atoms in copper is studied by molecular statics and dynamics methods. A number of modified potential is considered. The segregation energy of atoms in… read more here.
Keywords: grain boundary; atoms grain; effect grain; boundary segregation ... See more keywords
Entropy-Driven Grain Boundary Segregation: Prediction of the Phenomenon
Sign Up to like & getrecommendations! Published in 2021 at "Metals"
DOI: 10.3390/met11081331
Abstract: The question is formulated as to whether entropy-driven grain boundary segregation can exist. Such a phenomenon would be based on the assumption that a solute can segregate at the grain boundary sites that exhibit positive… read more here.
Keywords: phenomenon; grain boundary; boundary segregation; entropy driven ... See more keywords