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Mechanical and Fatigue Properties of Diamond-Reinforced Cu and Al Metal Matrix Composites Prepared by Cold Spray
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SYSNO ASEP 0555684 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Mechanical and Fatigue Properties of Diamond-Reinforced Cu and Al Metal Matrix Composites Prepared by Cold Spray Author(s) Kovařík, O. (CZ)
Čížek, Jan (UFP-V) ORCID
Yin, S. (IE)
Lupoi, R. (IE)
Janovská, Michaela (UT-L) RID, ORCID
Čech, J. (CZ)
Čapek, J. (CZ)
Siegl, J. (CZ)
Chráska, Tomáš (UFP-V) RID, ORCIDNumber of authors 9 Source Title Journal of Thermal Spray Technology. - : Springer - ISSN 1059-9630
Roč. 31, 1-2 (2022), s. 217-233Number of pages 17 s. Language eng - English Country US - United States Keywords cold spray ; processing diamond metal matrix composites, mechanical properties ; properties ; properties, fatigue ; properties, fracture Subject RIV JK - Corrosion ; Surface Treatment of Materials OECD category Coating and films R&D Projects EF16_019/0000778 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA20-12624S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UFP-V - RVO:61389021 ; UT-L - RVO:61388998 UT WOS 000746787300001 EID SCOPUS 85123578896 DOI 10.1007/s11666-022-01321-3 Annotation Diamond-reinforced metal matrix composites (DMMC) prepared by cold spray are emerging materials simultaneously featuring outstanding thermal conductivity and wear resistance. In our paper, their mechanical and fatigue properties relevant to perspective engineering applications were investigated using miniature bending specimens. Two different diamond mass concentrations (20 and 50%) embedded in two metal matrices (Al—lighter than diamond, Cu—heavier than diamond) were compared with the respective cold-sprayed pure metals, as well as bulk Al and Cu references. The pure Al, Cu coatings showed properties typical for cold spray deposits, i.e., decreased elastic moduli (50 GPa for Al, 80 GPa for Cu), limited ductility (< 1 × 10−3) and low fracture toughness (3.8 MPa·m0.5 for Al, 5.6 MPa·m0.5 for Cu) when compared to the bulks. Significantly improved properties (strain at fracture, ultimate strength, fatigue crack growth resistance, fracture toughness) were then observed for the produced DMMC. The improvement can be explained by a combination of two factors: changes in the properties of the metallic matrix triggered by the reinforcement particles peening effect and stress redistribution due to the particles presence. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2022 Electronic address https://link.springer.com/article/10.1007/s11666-022-01321-3
Number of the records: 1