Correlation between Mechanical Properties—Structural Characteristics and Cavitation Resistance of Rolled Aluminum Alloy Type 5083

Author:

Istrate Dionisie1,Bordeasu Ilare2,Ghiban Brândușa1,Istrate Bogdan3,Sbarcea Beatrice-Gabriela4,Ghera Cristian2,Luca Alexandru Nicolae2,Odagiu Petrisor Ovidiu1,Florea Bogdan1,Gubencu Dinu2ORCID

Affiliation:

1. Metallic Materials Science and Physical Metallurgy Department, University Politehnica Bucharest, 060042 Bucharest, Romania

2. Mechanical Machinery Equipment and Transport Department, University Politehnica of Timisoara, 300006 Timisoara, Romania

3. Department of Mechatronics and Robotics Mechanical Engineering, Tehnical University Gheorghe Asachi of Iasi, 700050 Iasi, Romania

4. Department of Materials and Products Characterization for Electrical and Energy Engineering, National Institute for R&D in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania

Abstract

The 5000 series aluminum alloy 5083 is distinguished by excellent processability, excellent welding characteristics, and a strong resilience to corrosion, particularly in maritime environments. It is employed in the manufacture of ships, automobiles, spacecraft, and industrial buildings. The goal of the current study is to determine whether there is any relationship between the mechanical properties, structural characteristics, and cavitation erosion properties of aluminum alloy 5083 in the H111 state (rolled from 454 °C to 399 °C and annealed at 343 °C by holding in cooled air), followed by artificial ageing at (180 °C) with three maintenance periods of 1 h, 12 h, and 24 h, and at (140 °C) with three maintenance periods of 1 h, 12 h, and 24 h. The cavitation resistance experiments of the experimental samples were performed in accordance with ASTM G32-2016. The resistance to cavitation erosion was determined by making mean erosion penetration rate (MDER) or mean depth of erosion (MDE) analytical diagrams according to the duration of the cavitation attack and by measuring the maximum depth of cavitation erosion in the samples analyzed by stereomicroscopy and scanning electron microscopy. Finally, a structural correlation between the condition of the artificially aged laminate alloy and its resistance to cavitation erosion could be achieved: ageing at 180 °C, maintained for 24 h, could lead to a maximum depth of cavitation erosion MDEmax of about 5 µm.

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

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