An Investigation on Laser Machining of 7075 T6 Aluminium Alloy and Effect of Thermal Treatment on its Mechanical Property

Al 7075 alloy was invented more than 70 years ago and numerous investigations are still ongoing to make it lucrative in several applications. The alloy’s high strength and low weight are most attractive properties that contribute to its widespread use in transportation applications in line with the growing worries about global warming. Additionally, Al 7075 alloy is utilized in lightweight equipment and are being applied in aviation, energy and even in the medical field. Aluminum and its alloys are used in a wide range of application and different heat treatment conditions are used based on application. Aluminum alloy have special combination of characteristics and used as most adaptable materials, for various industrial applications. Heat treatments and alloying ingredients give aluminum its ideal characteristics based on specific use. This encourages the production of microscopic strong precipitates that impede the dislocations motion and enhance the material’s mechanical characteristics, including strength and hardness. In this work modeling of the laser cutting of 7075 T6 Aluminium alloys are performed to see the stress distribution and HAZ for the laser cutting. Al 7075 T6 alloy is thermally treated at varying aging temperatures and holding times. The ultimate strength and hardness properties of the Al 7075 T6 alloy are assessed in relation to the heat treatment procedure.