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- W1256194814 abstract "Based on molecular dynamics using the embedded-atom-method potentials and the discrete-variational method for the Ni–Al–Re and Ni–Al–W systems, the effect of Re and W upon the brittle fracture in Ni3Al cracks at three crack orientations is investigated. The results show that Re and W may strengthen the Ni3Al alloy and improve the deformation resistance of the materials. The lattice trapping limits are not changed with the addition of a single Re or W atom, but they increase with the addition of 1 and 2 at.% Re or W atoms, and more so with the addition of W atoms. The study reveals that Re and W can prevent bond breaking at the crack tip and can promote crack healing in Ni3Al, with W exhibiting a stronger effect than Re. Furthermore, the increasing fracture stress values with the increasing concentrations of doping atoms implies that Re and W can improve the brittle fracture strength in Ni3Al cracks, where W has a stronger effect. These results can be related to the stronger bonding strengths of Ni–Re and Ni–W than that of Ni–Al." @default.
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- W1256194814 date "2015-12-01" @default.
- W1256194814 modified "2023-09-24" @default.
- W1256194814 title "Effect of Re and W upon brittle fracture in Ni3Al cracks by atomic simulation" @default.
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- W1256194814 doi "https://doi.org/10.1016/j.commatsci.2015.08.037" @default.
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