Effect of Al/Cu Ratio on Microstructure and High-Temperature Oxidation Resistance of AlxCoCrCuyFeNi High-Entropy Alloy Coatings

Journal of Manufacturing and Materials Processing, Journal Year: 2025, Volume and Issue: 9(1), P. 13 - 13

Published: Jan. 5, 2025

To improve high-temperature oxidation resistance for Ti6Al4V alloy, AlxCoCrCuyFeNi (x = 0, 0.3, 0.5, 0.7, 1.0; y 1.0, x + 1.0) high-entropy alloy (HEA) coatings were prepared on the substrate by a laser cladding technique. The results show that mainly composed of FCC, BCC, and Ti-rich phases. Severe segregation Cu element occurred in CoCrCuFeNi HEA as Cu-rich phase (FCC2). phases decreased with decreasing content completely disappeared until Al reached 1.0. microhardnesses Cu1.0, Cu0.7Al0.3, Cu0.5Al0.5, Cu0.3Al0.7, Al1.0 2.01, 2.06, 2.08, 2.09, 2.11 times substrate, compared those rates 55%, 51%, 47%, 42%, 35%, respectively. surface oxides five CuO, TiO2, Fe3O4, Cr2O3, Al2O3. increase promoted generation Al2O3 film Cr2O3 surfaces coatings, which significantly improved antioxidant performance 50 h at 800 °C. When coating showed best performance.

Language: Английский

The Influence of Strontium Acetate on the Structure and Properties of Micro-arc Oxidation Coating of TLM Alloy

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180486 - 180486

Published: April 1, 2025

Language: Английский