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- W4315475368 endingPage "112017" @default.
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- W4315475368 abstract "In the present work, we have generated a new second-nearest neighbour modified embedded atom method potential (2NN-MEAM) for the W–P system to investigate the impact of P impurity segregation on the strength of symmetric 〈110〉 tilt coincident site lattice grain boundaries (GBs) in tungsten. By incorporating the impurity-induced reduction of the work of separation in the fitting strategy, we have produced a potential that predicts decohesion behaviour as found by ab initio density functional theory (DFT) modelling. Analysis of the GB work of separation and generalized stacking fault energy data derived from DFT and the 2NN-MEAM potential show that P-impurities reduce the resistance to both cleavage and slip. Mode I tensile simulations reveal that the most dominant mode of GB failure is cleavage and that pristine GBs, which are initially ductile, on most accounts change to brittle upon introduction of impurities. Such tendencies are in line with experimentally observed correlations between P-impurity content and reduced ductility." @default.
- W4315475368 created "2023-01-11" @default.
- W4315475368 creator A5013637168 @default.
- W4315475368 creator A5022664031 @default.
- W4315475368 creator A5080128708 @default.
- W4315475368 date "2023-02-01" @default.
- W4315475368 modified "2023-10-18" @default.
- W4315475368 title "Atomistic investigation of the impact of phosphorus impurities on the tungsten grain boundary decohesion" @default.
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- W4315475368 doi "https://doi.org/10.1016/j.commatsci.2023.112017" @default.
- W4315475368 hasPublicationYear "2023" @default.
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