Grain boundary energy function for fcc metals
WebOct 1, 1990 · The interrelation between the number of nearest-neighbor atomic bonds broken upon formation of a grain boundary in an fcc metal and the related zero-temperature boundary energy is investigated by atomistic simulation. WebMay 27, 2024 · Because the energies interpolated from the grain boundary energy function are consistent with the 408 boundaries that have been calculated using …
Grain boundary energy function for fcc metals
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WebOct 15, 1996 · Interfacial energies of five high-angle singular grain boundaries (GB's) in seven fcc metals—Ag, Al, Au, Cu, Ni, Pd, and Pt—are calculated employing lattice … Websimulations [18]. Assuming the grain boundary energy is a continuous function of the ve DOFs, Bulatov et al. [23] constructed a closed-form grain boundary energy function for fcc metals by using a hierarchical interpolation from values of special sets of grain boundaries (low dimensional subsets termed "grofs").
WebSep 1, 1996 · Twenty-one {l_angle}110{r_angle} symmetric tilt grain boundaries (GB{close_quote}s) are investigated with atomistic simulations, using an embedded-atom method (EAM) potential for a low stacking-fault energy fcc metal. Lattice statics simulations with a large number of initial configurations are used to identify both the equilibrium and …
WebOct 20, 2015 · Hence, variation in grain boundary energy between the two fcc materials when transferred to a new system is perhaps expected. Once one grain boundary dataset is transferred to a new system, other … WebOct 15, 1996 · Abstract Interfacial energies of five high-angle singular grain boundaries (GB's) in seven fcc metals—Ag, Al, Au, Cu, Ni, Pd, and Pt—are calculated employing lattice statics at 0 K using embedded-atom-method potentials. The results disagree with predictions of broken-bond models.
WebMar 8, 2024 · Nanoscale grains typically have a very strong innate tendency to coarsen, but the grain-boundary structure can be designed and tuned to lower its excess energy, reducing both the driving force for coarsening and the grain-boundary mobility.
WebJun 18, 2024 · This reversible deformation is retained in a broad class of face-centred cubic metals with low stacking fault energies when tuning the GB structure, external geometry and loading conditions over... sharp sewing needlesWebFeb 6, 2024 · The concentration of Al at the grain boundaries of medium-entropy alloy CrCoNiAl 0.014 was higher at 300 k than at 700 k (Figure 5e,f and Figure 6e,f). The formation of the BCC crystal structure on the grain boundary surface of the medium-entropy alloy CrCoNiAl 0.014 is related to the increase in the concentration of Al at the … porsche 911 vs mercedes amg gtWebDec 29, 2024 · In this study, we apply machine learning potentials (MLPs) in a recently constructed repository to the prediction of the grain boundary energy in face-centered-cubic elemental metals, i.e., Ag, Al, Au, Cu, Pd, and Pt. sharp sf 2030 copierWebSep 1, 1996 · Twenty-one 〈110〉 symmetric tilt grain boundaries (GB's) are investigated with atomistic simulations, using an embedded-atom method (EAM) potential for a low … porsche 911 vs boxsterWebFeb 1, 2014 · The first step is to quantify and fit the grain boundary energy variation within a sampled low dimensional subsets of the five … sharps fabric printersWebMay 24, 2024 · Deformation twinning from grain boundaries is often observed in face-centered cubic metals with low stacking fault energy. One of the possible factors that contribute to twinning origination from ... porsche 911 webmotorsWebMay 22, 2016 · We investigate the mechanisms of incipient plasticity at low angle twist and asymmetric tilt boundaries in fcc metals. To observe plasticity of grain boundaries independently of the bulk plasticity, we simulate nanoindentation of bicrystals. On the low angle twist boundaries, the intrinsic grain boundary (GB) dislocation network deforms … porsche 911 with black wheels