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Abstract
In this paper, results of the experimental study on improving wear resistance in sliding friction of Al-based alloy are presented. The technique used involves the formation of a metal matrix composite (MMC) in the alloy surface layer by laser dispersion of carbide powders such as WC, TiC and SiC. For WC and TiC MMC surface coatings fabricated under conditions typical for most of the technologically relevant solid-state lasers (wavelength range of 0.8–1.1 μm), the nearly inversely proportional dependence of the required laser energy density on the powder mass density is observed. Highly homogenous distribution of powder particle content (up to 40%) in the MMC surface coatings of a thickness between 0.8 and 1.6 mm obtained by multiple scanning is observed in the cross-section of specimens processed within a rather narrow parameter window. Tribological tests and comparison to untreated material reveal wear resistance increases by five- and ten-fold, observed in samples with laser-dispersed TiC and WC powders, respectively. Results indicate that substantial modification and reinforcement of the surface layer can be achieved in Al alloy in a one-step process without substrate preheating.
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Authors (3)
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Rafał Jendrzejewski
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Gerard Śliwiński prof.
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Materials
no. 13,
ISSN: 1996-1944 - Language:
- English
- Publication year:
- 2020
- Bibliographic description:
- Jendrzejewski R., Łubiński J., Śliwiński G.: Wear Resistance Enhancement of Al6061 Alloy Surface Layer by Laser Dispersed Carbide Powders// Materials -Vol. 13,iss. 17 (2020), s.3683-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ma13173683
- Sources of funding:
-
- Grant nr 4884/B/T02/2010/38 Composite materials based on Al and Ti alloys produced by laser dispersing of ceramic powders
- Verified by:
- Gdańsk University of Technology
Referenced datasets
- dataset Ball on disk test AL(rf.)-Al2O3-r25
- dataset Ball on disk test AT4_11-Al2O3-r25
- dataset Ball on disk test AT3_21-Al2O3-r25
- dataset Ball on disk test AW4_1-Al2O3-r15
- dataset Ball on disk test AT4_4-Al2O3-r15
- dataset Reinforced aluminium reference measurement R63 – earlier tests
- dataset Ball on disk test AL(rf.)-Al2O3-r15
- dataset Ball on disk test AW4_11-Al2O3-r25
- dataset Preparation to ball on disk test Initial contact stress evaluation
- dataset Reinforced aluminium reference measurement Result1 – earlier tests
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