5). In the rejuvenated regions, the generation of long, thin SFs and twins leads to a high density of interfaces that enhance strain hardenability. The formation and destruction of SRO serve as the switch between reversibility and irreversibility. Therefore, the presence of SRO in HEAs/MEAs can...
after a critical Td density is reached such that adjacent trimer configurations appear on the surface (red particles Fig. 2g), tip-down insertion of a 4th Td is favorable (red particles Fig. 2h) and thus 2D assembled phases can nucleate. To test this, we experimentally roughened Si ...
and surface energies for various interatomic potentials with those from density functional theory calculations to examine how well these more complicated planar faults and surface energies are captured and whether any deformations are energetically competitive with the {111}112 slip observed in FCC ...
We do Density Functional Theory based total-energy calculations of the L12 phase in Co3X and Ni3X compounds, X being a transition metal element. The lattice parameters, magnetic moments and formation enthalpies are determined and compared with the available experimental data. The (111) superlattice...
(a) Derive planar density expression for FCC (100) and (111) planes in terms of the atomic radius R (b) Compute and compare planar density values for these same two planes for nickel For BCC materials, is the coordination number for the atom in the center of th...
Abstract Generalized planar fault energy (GPFE) curves are widely used to evaluate the deformation behavior of metals and alloys. In the present work, a systematic analysis of the microscopic plastic deformation mechanism of face-centered cubic Al in comparison to Cu was conducted based on GPFE ...
have established an ana-lytical expression that predicts quantitatively the criticaltwinning stress from GPFE in fcc metals and alloys,usingdislocation-basedtwinnucleationmodels[11–13]. Because of the L10ordered tetragonal structureof gamma TiAl, only the 1/6[11?2] Shockley partial ina given (111...
We do Density Functional Theory based total-energy calculations of the L 1 2 phase in Co 3 X and Ni 3 X compounds, X being a transition metal element. The lattice parameters, magnetic moments and formation enthalpies are determined and compared with the available experimental data. The (111)...
The study area shows a landscape of high-density and deep-cut gullies with a gully density of 3.8 km/km2 [50], and consequently an extremely broken and undulating topography. Three main gully types exist on the Chinese Loess Plateau: hillslope gully, valley floor gully and valley bank gully...
As stated in [16], the information density that is contained in the uncertainty matrix is too high for users who only want a single number. In addition, the uncertainty matrix cannot easily be used for the decision of either acceptance or rejection. Evaluations of measurement uncertainty should...