Correlation between microstructure and mechanical properties of severely deformed metals

Gubicza, Jenő and Nguyen Quang, Chinh and Lábár, János and Dobatkin, S. and Hegedűs, Zoltán (2009) Correlation between microstructure and mechanical properties of severely deformed metals. JOURNAL OF ALLOYS AND COMPOUNDS, 483. pp. 271-274. ISSN 0925-8388

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There is a correlation between the microstructure and the mechanical behavior of ultrafine-grained face centered cubic (fcc) metals processed by equal-channel angular pressing (ECAP). It is shown that the saturation yield strength is related to the maximum dislocation density according to the Taylor equation and, in addition, the value of the parameter ˛ in the Taylor equation is strongly affected by the stacking fault energy because of different geometrical arrangements of dislocations within the grains. It is also demonstrated that the ductility of Cu processed by ECAP decreases with increasing strain but at extremely high strains the ductility is partially restored due to the recovery of the microstructure.

Item Type: Article
Additional Information: Conference: 14th International Symposium on Metastable and Nano- Materials Location: Corfu, GREECE Date: AUG 26-30, 2007
Uncontrolled Keywords: mechanical properties; X ray diffraction; STRAIN; Pressing (forming); Microstructure; METALS; Metallurgy; Metal recovery; Equal Channel Angular Pressing; DUCTILITY; DIFFRACTION; Yield strength; Ultrafine-grained; Taylor equations; Stacking fault energies; Microstructure and mechanical properties; Mechanical behavior; High strains; Geometrical arrangements; Face-centered-cubic (fcc) metals; Dislocation densities; Deformed metals; X-ray diffraction (D); Microstructure (C); Metals and alloys (A); Mechanical properties (C); Dislocations and disclinations (C); COPPER; ALUMINUM; CHANNEL; FCC METALS; GRAIN-REFINEMENT; NANOSTRUCTURED METAL; SEVERE PLASTIC-DEFORMATION; X-ray diffraction; Mechanical properties; Dislocations and disclinations; Metals and alloys
Subjects: Q Science / természettudomány > QC Physics / fizika
Depositing User: MTMT SWORD
Date Deposited: 22 May 2014 20:11
Last Modified: 22 May 2014 20:11

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