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Calculated Collision Welding Process Windows in Acoustic, Elastic, and Shock Approximations
Collision welding is a solid-state joining process which uses shock pressures developed during impact to metallurgically bond flyer and target plates. Various analytical expressions have been developed to describe the ... -
Development of a Diffusion Mobility Database for Co-based Superalloys
To facilitate the development of high-temperature Co-based gamma-gamma prime superalloys, a Co-Ni based diffusion mobility database is developed for the eight component FCC (Face Centered Cubic) system of Co-Al-W-Ni-Cr-Ti-Ta-Re. ... -
Cubic crystal compounds - Jarvis DFT
This is the dataset of materials obtained from the Jarvis-DFT dataset and used for the study "Machine learning approaches for feature engineering of the crystal structure: Application to the prediction of the formation ... -
Thermodynamic analysis of the topologically close packed σ phase in the Co-Cr system
(2019-11)Density functional theory (DFT) calculations show that it is essential to consider the magnetic contribution to the total energy for the end-members of the σ phase. A more straightforward method to use the DFT results in ... -
Thermodynamic assessment of the Co-Ta system
(2018-12)The Co-Ta system has been reviewed and the thermodynamic description was re-assessed in the present work. DFT (density functional theory) calculations considering spin polarization were performed to obtain the energies for ... -
Impact of solutes on the lattice parameters and elastic stiffness coefficients of hcp Fe from first-principles calculations
(2018-12-16)The hexagonal close-packed (hcp) $\epsilon$-martensite phase in steels nucleates from the austenite parent phase during plastic straining and can be stabilized by solute additions. We compute the lattice parameters and ... -
Geometries of edge and mixed dislocations in bcc Fe from first principles calculations
We use density functional theory (DFT) to compute the core structures of a_0[100](010) edge, a_0[100](011) edge, a_0/2[-1-11](1-10) edge, and a_0/2[111](1-10) 71 degree mixed dislocations in body-centered cubic (bcc) Fe. ... -
Thermodynamic Assessments of Bi-Te Bi-Se Sb-Te
The Bi-Te, Bi-Se, and Sb-Te systems have been assessed. The compounds Bi2Te3, Bi2Se3, and Sb2Te3 have been assessed using a 3 sublattice model and the intrinsic carriers of each compound have been assessed. The homologous ... -
Na-Doped Pb(S,Se,Te) CALPHAD Assessment
(2018-08-02)The PbX (X=S,Se,Te) system has been thermodynamically assessed. The individual binaries of the PbX system have been assessed using a two-sublattice model to describe the intrinsic carriers of the system. The 2SL model has ... -
Mobility Database Pb(S,Te) System
The mobility and thermodynamics of the Pb(S,Te) have been assessed using a diffusion couple. -
Thermodynamics of rare earth sesquioxides
(2007)Experimental thermochemical and related data for rare earth sesquioxides, R2O3 (R = Sc, Y, La–Lu) are critically reviewed to provide a consistent set of thermodynamic functions covering the temperature range from at least ... -
Phase Field Benchmark 7a - FiPy with explicit double-well
(2018-03-13) -
Effect of solutes on the lattice parameters and elastic stiffness coefficients of body-centered tetragonal Fe
(2018-03-03)We compute changes in the lattice parameters and elastic stiffness coefficients Cij of body-centered tetragonal (bct) Fe due to Al, B, C, Cu, Mn, Si, and N solutes. Solute strain misfit tensors determine changes in the ... -
Thermodynamic re-assessment of the Al-Co-W system
The Al-Co-W system and its binary sub-systems Al-Co, Al-W and Co-W were critically reviewed. The thermodynamic description of the Al-Co-W system including all three binaries was developed considering thermodynamic and ... -
Evaluating error with atomistic simulations: the effect of potential and calculation methodology on the modeling of lattice and elastic constants
Atomistic simulations using classical interatomic potentials are powerful investigative tools linking atomic structures to dynamic properties and behaviors. It is well known that different interatomic potentials produce ... -
Thermodynamic Description of the Ti-Al-O System Based on Experimental Data
(2017-06-08)Phase equilibria of the TiO2-Al2O3 system were investigated experimentally using XRD, SEM/EDX and DTA methods. Temperature stability limits of the aluminum titanate (Al2TiO5) were detected. The thermodynamic parameters of ... -
NIST Ni-based diffusion mobility database
The NIST Ni-based diffusion mobility database was originally constructed for the fcc phase of the Ni–Al–Co–Cr–Hf–Mo–Re–Ta–Ti–W system. Diffusion data in various constituent binary systems were assessed to establish a ... -
A Study in Phase Equilibria in the Cr-Mo-Ni System
A thermodynamic evaluation of the Cr-Mo-Ni system has been performed using a computerized optimization procedure . Parameters describing the Gibbs energy of the various phases have been calculated. The intermetallic phases ... -
Experimental Investigation and Thermodynamic Modeling of the Co-Rich Region in the Co-Al-Ni-W Quaternary System
(2017-03-20)The stabilities of the γ-(Co), γ′-Co3(Al,W), μ-Co7W6, β-CoAl and α-(W) phases in the Co-Al-W and Ni-Al-W ternary systems were investigated at 900, 1000, 1100 and 1300 °C. Electron probe microanalysis was used to determine ...