Correlation between Processing Conditions, Lattice Defect Structure and Mechanical Performance of Ultrafine-Grained Materials

• Authors: J. Gubicza
• Languages of publication: EN

Abstracts

EN

The mechanical performance of ultrafine-grained materials is strongly influenced by the lattice defect structure, i.e. the vacancy concentration, the type, arrangement and density of dislocations, the planar fault probability, as well as the amount and character of grain boundaries. In this paper, the correlation between the processing conditions, the lattice defect structure and the plastic behavior of ultrafine-grained materials is overviewed. For the processing route of severe plastic deformation, the influence of applied strain, hydrostatic pressure, as well as melting point, stacking fault energy and alloying on grain size, dislocation density and strength is studied. For nanopowder sintering techniques, the effect of atmosphere, temperature and time of consolidation on lattice defects and mechanical properties is discussed in detail.

Keywords

EN

61.72.Dd; 62.20.F-; 61.72.Ff; 81.07.Bc; 62.20.-x; 61.72.Mm

Discipline

• 62.20.-x: Mechanical properties of solids
• 62.20.F-: Deformation and plasticity(see also 83.50.-v Deformation and flow in rheology; for materials treatment effects on deformation, see 81.40.Lm)
• 61.72.Mm: Grain and twin boundaries
• 61.72.Dd: Experimental determination of defects by diffraction and scattering
• 81.07.Bc: Nanocrystalline materials
• 61.72.Ff: Direct observation of dislocations and other defects (etch pits, decoration, electron microscopy, x-ray topography, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 4
• Pages: 479-486

Dates

published

2015-10

Contributors

author

J. Gubicza

• Department of Materials Physics, Eötvös Loránd University, Budapest, H-1117, Pázmány Péter sétány 1/A, Hungary

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Identifiers

DOI

10.12693/APhysPolA.128.479