Correlation between Mechanical Properties—Structural Characteristics and Cavitation Resistance of Cast Aluminum Alloy Type 5083
Dionisie Istrate,
Beatrice-Gabriela Sbârcea,
Alin Mihai Demian,
Andreea Daniela Buzatu,
Laura Salcianu,
Ilare Bordeasu,
Lavinia Madalina Micu,
Cristian Ghera,
Bogdan Florea,
Brândușa Ghiban
Affiliations
Dionisie Istrate
Metallic Materials Science and Physical Metallurgy Department, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
Beatrice-Gabriela Sbârcea
Department of Materials and Products Characterization for Electrical and Energy Engineering, National Institute for R&D in Electrical Engineering ICPE-CA, 313 Splaiul Unirii, 030138 Bucharest, Romania
Alin Mihai Demian
Metallic Materials Science and Physical Metallurgy Department, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
Andreea Daniela Buzatu
Metallic Materials Science and Physical Metallurgy Department, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
Laura Salcianu
Department of Mechanical Machines Equipment and Transportation, University Politehnica of Timisoara, 2 Piata Victoriei, 300006 Timisoara, Romania
Ilare Bordeasu
Department of Mechanical Machines Equipment and Transportation, University Politehnica of Timisoara, 2 Piata Victoriei, 300006 Timisoara, Romania
Lavinia Madalina Micu
Department of Agricultural Technologies, University of Agricultural Sciences and Veterinary Medicine of Banat King Mihai I from Romania, 119 Calea Aradului, 300645 Timisoara, Romania
Cristian Ghera
Department of Mechanical Machines Equipment and Transportation, University Politehnica of Timisoara, 2 Piata Victoriei, 300006 Timisoara, Romania
Bogdan Florea
Engineering and Management of Obtaining Metallic Materials Department, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
Brândușa Ghiban
Metallic Materials Science and Physical Metallurgy Department, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
The aluminum alloy type 5083, which has high corrosion resistance, excellent weldability, and good strength, is widely used in shipbuilding, automotive, aerospace, and industrial construction. The present paper has the aim of establishing a possible correlation between mechanical properties, structural characteristics, and cavitation erosion properties of the 5083 alloy after applying different heat treatments. Different homogenization heat treatments (350 °C, 450 °C) were applied, each followed by cooling in air and artificial aging at different temperature (140 °C and 180 °C) with three maintenance periods, 1 h, 12 h, and 24 h. The experiments concerning cavitation resistance of the experimental samples were completed in accordance with ASTM G32-2016. The cavitation erosion resistance were determined either by analytical diagrams MDER (or MDE) vs. cavity attack duration, or by measuring the maximum erosion attack by stereomicroscopy and scanning electron microscopy. Finally, the best combination of heat treatments applied to cast aluminum products type 5083 is homogenization at 350 °C followed by artificial aging at 180 °C, at which the highest mechanical characteristics are obtained, a resilience of 25 J/cm2, a grain size of 140–180 μm, and a maximum depth of the erosion MDEmax around 14–17 µm.
