Generation of deformation twins in nanocrystalline metals: Theoretical model

Journal Article · Wed Nov 01 00:00:00 EST 2006 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.74.172107· OSTI ID:20853846

Gutkin, M Yu; Ovid'ko, I A; Skiba, N V ^[1]

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1. Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, Bolshoj 61, Vasil. Ostrov, St. Petersburg 199178 (Russian Federation)

A theoretical model is suggested that describes the generation of deformation twins at grain boundaries in nanocrystalline metals. Within the model, a thick twin lamella in a nanoscale grain is generated due to stress-driven emission of twinning dislocations from a grain boundary. The lamella consists of overlapping stacking faults. The results account for experimental data on observation of deformation twins in nanocrystalline Al and Cu reported in the literature.

• OSTI ID: 20853846
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 74, Issue 17; Other Information: DOI: 10.1103/PhysRevB.74.172107; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
COPPER
CRYSTALS
DEFORMATION
DISLOCATIONS
EMISSION
GRAIN BOUNDARIES
NANOSTRUCTURES
STACKING FAULTS
STRESSES
TWINNING