[Kovove materialy - Metallic materials]
    Thu - March 28, 2024 - 10:04 No. of hits : 1736351 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 38 (2000), Issue 5

Surface relief and its relation to the crystallographic orientation in fatigued copper single crystals (in Czech)
MAN, J., OBRTLIK, K., POLAK, J.
vol. 38 (2000), no. 5, pp. 339 - 353

Abstract
Surface relief of cylindrical copper single crystals oriented for single slip and cyclically strained in plastic strain control up to fracture was studied using Philips 505 scanning electron microscope and interference light microscope. Both individual persistent slip bands (PSBs) and persistent slip macrobands (PSMs) were observed. Their length, width and height were determined in dependence on the position on the specimen surface. The PSMs height was found to depend strongly on the orientation of a surface normal with respect to the primary slip direction. Protrusions grow exclusively in the direction of the Burgers vector of the primary dislocations without apparent influence of the secondary slip. The height of PSMs is proportional to their width and increases with their length measured in the active slip direction and with cumulative plastic strain amplitude in PSBs.

Key words
fatigue, copper single crystals, surface relief, protrusions, persistent slip macrobands (PSMs), macroband height, local surface orientation

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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