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Copper addition in multicomponent principal complex alloy MoNbTiW

Grant number: 19/05836-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2019
Effective date (End): January 31, 2020
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
Principal Investigator:Ausdinir Danilo Bortolozo
Grantee:George André Nogueira Jacob
Home Institution: Faculdade de Ciências Aplicadas (FCA). Universidade Estadual de Campinas (UNICAMP). Limeira , SP, Brazil


High-entropy alloys (HEA) have attracted enormous attention at many fields. These alloys are compounded by multiple principal elements. Unique microstructures and many impressive properties are discovered, such as, high strength and hardness, excellent corrosion resistance, thermal stability, fatigue, fracture and irradiance resistance. All of these properties have provided many promising potential applications for HEA.Based on this context, this project aims to explore the effect of the addition of Cu on the mechanical properties with the main multicomponent alloys MoNbTiW. Powder metallurgy route will be used. The alloys will be characterized by X-ray diffraction, densification, optical and scanning microscopy, microhardness, compression tests. Preliminary results suggest that for thermal treatment temperatures of 1300 oC for 24 h there is a single phase formation. For the mechanical properties a hardness of 580 ± 46 HV and a limit of compressive strength of approximately 602 ± 24 MPa were reached.