Multiplane-induced widening of stacking faults in fcc metals | Zendy

Mutasem A. Shehadeh | Zendy; Gang Lü | Zendy; Z. Chen | Zendy; Nicholas Kioussis | Zendy; Nasr M. Ghoniem | Zendy

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Multiplane-induced widening of stacking faults in fcc metals

Author(s) -

Mutasem A. Shehadeh,

Gang Lü,

Z. Chen,

Nicholas Kioussis,

Nasr M. Ghoniem

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2799246

Subject(s) - stacking , materials science , burgers vector , dislocation , condensed matter physics , stacking fault , ab initio quantum chemistry methods , partial dislocations , ab initio , crystallography , molecular physics , physics , chemistry , nuclear magnetic resonance , quantum mechanics , molecule

Using an ab initio-based parametric dislocation dynamics approach we show that Shockley partials on successive glide planes greatly assist the widening of stacking faults (SFs) in Al and Ag. This effect is amplified when all trailing partials are pinned. Subsequent placement of Shockley partials on adjacent planes enhances further the widening of the SF width. In sharp contrast, dislocations with zero net Burgers vector across three successive planes form very compact cores in both Al and Ag, in agreement with recent experiments.

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