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Application of massive laser shock processing for improvement of mechanical and tribological propertiesTrdan, Uroš ...The present paper aims to investigate topographical, microstructural, mechanical and tribological behaviour of precipitation hardened Al alloy subjected to massive laser shock processing (LSP) ... without protective coating at 2500 pulses/cm2, using three beam diameters. Wear tests under dry sliding conditions resulted in severe wear, whereas the main wear mechanisms were adhesion accompanied by abrasive wear. Nevertheless, LSP with optimal processing parameters reduce the friction coefficient and wear rate with lower degrees of adhesion and abrasion inside the wear track in comparison to the untreated sample. The enhanced tribological performance is attributed to the positive influence of LSP induced surface topography, surface compressive residual stresses (RS) and dense dislocation arrangements, as the result of high-pressure shock waves. Nonetheless, due to the narrow window of optimal parameters reduced wear resistance as a consequence of undesired thermal/softening effect due to laser ablation and melting was detected with non-optimal processing parameters.Source: Surface & coatings technology. - ISSN 0257-8972 (Vol. 342, May 2018, str. 1-11)Type of material - article, component partPublish date - 2018Language - englishCOBISS.SI-ID - 15941915
Author
Trdan, Uroš |
Skarba, M. |
Porro, Juan A. |
Ocaña, Jose Luis |
Grum, Janez, 1946-
Topics
laser shock processing |
aluminium alloy |
wear |
microhardness |
residual stress |
microstructure |
lasersko udarno utrjevanje |
aluminijeva zlitina |
obraba |
mikrotrdota |
zaostale napetosti |
mikrostruktura
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Trdan, Uroš | 28906 |
Skarba, M. | |
Porro, Juan A. | |
Ocaña, Jose Luis | |
Grum, Janez, 1946- | 03551 |
Source: Personal bibliographies
and: SICRIS
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