INFLUENCE OF TiC CONTENT ON MICROSTRUCTURE AND PROPERTIES OF AlCoCrFeNi HIGH-ENTROPY ALLOY COATINGS PREPARED BY LASER CLADDING

Zhaotong Li (), Cainian Jing, Yan Feng (), Zhonglin Wu (), Tao Lin, Jingrui Zhao () and Lei Liu ()
Additional contact information
Zhaotong Li: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, P. R. China
Cainian Jing: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, P. R. China
Yan Feng: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, P. R. China
Zhonglin Wu: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, P. R. China
Tao Lin: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, P. R. China
Jingrui Zhao: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, P. R. China
Lei Liu: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, P. R. China

Surface Review and Letters (SRL), 2022, vol. 29, issue 10, 1-9

Abstract: In this study, AlCoCrFeNi-TiCx (x values in molar ratio, x = 0, 0.1, 0.2, 0.3) high-entropy alloy coatings (HEAcs) were prepared on the surface of H13 steel by laser cladding (LC). The microhardness, corrosion resistance, and wear resistance of the HEAcs were analyzed using a microhardness tester, electrochemical workstation, and friction and wear tester, respectively. The results showed that with an increase in the TiC content of the coatings, the interior of the coatings mainly consisted of disordered body-centered cubic (BCC), ordered BCC (B2), and TiC phases, and lattice distortion occurred inside the coatings. TiC was distributed as white particles at the grain boundaries, and the internal microstructure was mainly composed of equiaxed crystals (EC) and petal-like dendrites. The EC were gradually refined owing to the pinning effect. The spinodal decomposition causes a large number of reticulated microstructures inside the grains, and nanoscale TiC precipitation appears in the reticulated microstructures. Owing to lattice distortion and solid solution strengthening, the microhardness of the TiC0.3 coating was up to 966 HV0.5, which was approximately 3.2 times that of the substrate. As the TiC content increases, the friction coefficient and mass loss of the coatings gradually decreased, the self-corrosion current (Icorr) gradually decreased and the self-corrosion potential (Ecorr) gradually increased. The coatings exhibited good wear and corrosion resistance.

Keywords: High-entropy alloy; laser cladding; wear; corrosion resistance (search for similar items in EconPapers)
Date: 2022
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X22501311
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:29:y:2022:i:10:n:s0218625x22501311

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X22501311

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().