Engineers at the University of California, Los Angeles were able to weld an aluminum alloy that was invented in the 1940s and could not be welded thanks to nanotechnology. Aluminum alloy 7075 (AA 7075) is as strong as steel but lighter. However, welding this alloy has been impossible so far. Aluminum alloy 7075 was and still is very valuable in the 1940s, as it has the strength equal to many popular steel sheets on the market today and has good corrosion and machining resistance while weighing one Third is the weight of steel. The welding process of 7075 aluminum is not easy and almost impossible. However, researchers at the University of California, Los Angeles School of Engineering have found a way to weld it using nanotechnology. When AA 7075 is heated to the welding temperature, its molecular structure creates an uncoordinated flow of composed elements, which leads to resistance in the alloy and even failure under heat. The alloy is made from 5.6 to 6.1 percent zinc, 2.1 to 2.5 percent magnesium, 1.2 to 1.6 percent copper and less than half a percent silicon, iron, manganese, titanium, chromium and other metals. Has been. The researchers used nanoparticles to solve this problem. Using nanoparticles as fillers between two separate wires of AA 7075, titanium carbide nanoparticles were injected into the alloy. With this, the alloy was no longer resistant to welding and would not fail. Now, with the strength of this alloy and can withstand pressures up to 551 MPa, it can be used in the aerospace industry and can compete with steel. With this alloy, which has the same strength as steel but is lighter than steel, manufacturers can produce vehicles faster and more efficiently. According to Xiaochan Li, lead author of the study, companies can use the same processes and equipment they currently use to produce products with this alloy, and their products can be lighter and more energy efficient while maintaining strength and durability.