Showing papers by "Akira Takeuchi published in 2017"
TL;DR: In this article, the formation of high-entropy alloys (HEAs) by focusing on an L10 structure from Pettifor map for binary compounds with 1:1 stoichiometry was investigated.
23 citations
TL;DR: In this paper, high-entropy quasicrystalline alloys (HEAs) with icosahedral I-phases were investigated for their possibility to be formed into a highentropy alloy.
6 citations
TL;DR: In this article, the authors performed molecular dynamics simulations for an Fe50Ni50 (at.%) alloy with NTp ensemble to keep the number of atoms (N), temperature (T = 673 K), and pressure (p ∼ 101.325 kPa) constant under a GrujicicicZhou-type MD potential from an embedded Atom Method scheme with a cut-off distance of 1 nm.
Abstract: Molecular dynamics (MD) simulations were performed for an Fe50Ni50 (at.%) alloy with NTp ensemble to keep the number of atoms (N), temperature (T = 673 K), and pressure (p ∼ 101.325 kPa) constant under a GrujicicZhou-type MD potential from an Embedded Atom Method scheme with a cut-off distance of 1 nm. An Fe50Ni50 alloy was initially created as a hypothetical chemically-ordered B2 structure with a 12 × 12 × 12 supercell comprising 3456 atoms. Subsequently, it was annealed at 673 K, without the application of stress, and then under a uniaxial tension of ∼290 MPa, and shear stresses of ∼570 and ∼2940 MPa. The results revealed that stress contributed to a change in the transformation scheme to the L10 phase from partially to fully of the system with a reduction of time. On the other hand, an as-quenched amorphous phase under a shear stress of ∼680 MPa, transformed to a disordered fcc-derivative phase. Therefore it is clear that stresses in MD simulations play a crucial role in enhancing the atomic motion during a transformation. [doi:10.2320/matertrans.M2016162]
1 citations