This project aims to develop the AA7075 aluminum alloy, which is currently produced in limited quantities in Turkey and has a high dependency on imports in industries such as defense and automotive. The AA7075 alloy has a low density and high strength, making it advantageous for various applications. The project plans to produce compliant EN AW-7075 alloy sheet metal casting using the Hot Top method and then use extrusion and heat treatment processes to produce profiles with mechanical properties that comply with industry standards. Additionally, the project seeks to develop pet and styrofoam molds to meet market demand.
Project Summary
Launch
Finish
Republic Of Turkey Ministry of Industry and Technology
ITouch Systems, Cukurova University Science Park, STB: 61403
The project aims to produce a homogenous AA7075 aluminum alloy suitable for aviation, space, and automotive industries by determining metallurgical, physical, and chemical properties. The university faculty members were consulted to overcome the challenge of pouring aluminum and zinc alloy homogeneously. Detailed literature research was conducted to determine homogenization parameters for AA7075 casting production.
Physical, surface, and metallurgical tests were performed to determine the quality and process parameters of the products obtained. The use of aluminum alloys will increase in the industry, reducing carbon emissions resulting from steel production.
The AA 7075 aluminum alloy is a high-strength, heat-treatable forging alloy developed by the Aluminum Company of America in 1943. It contains a small amount of zinc, magnesium, chromium, and copper for hardening purposes. Despite having a density one-third that of iron, it has remarkable properties, including a tensile strength of over 600 N/mm2.
Success in terms of the results obtained
The production of the AA7075 aluminum alloy with a chemical composition compliant with the TS EN 573-3 standard and mechanical properties compliant with the TS EN 755-2 standard is the main objective of this project.
Suitable process parameters have been determined to allow the extrusion of the cast blanks. The blanks were extruded directly, and the resulting profiles were obtained by cutting them to the desired shape and size using the appropriate mold. Heat treatment experiments were performed on the profiles that achieved the desired surface and dimensional properties. The physical, surface, and mechanical properties of the samples taken from the extruded and heat-treated profiles were tested and controlled to ensure their compliance with the relevant standards. Tensile testing was performed to measure yield strength, tensile strength, elongation, and hardness, while electrical conductivity measurements were taken using an electrical conductivity test.
Microstructure images obtained from heat treatment experiments at different temperatures and different times
