Al 7075 alloy
Al 7075 alloy
(OP)
I want to produce Al 075 alloy. I woyld like to know if i can produce this alloy by melting the main elements in an electric furnace.Firstly, i melt Al 2024 master alloy and then add Al, Mg, Zn. All elements are added as pellets, except for Mg, which is in small pieces of wire. When i add the pieces of Mg, these remain on the top of the melt and a great amount of porous and oxides are produced. I would like to know if it would be better to add Mg in pieces of sheet, in order to enter into the melt.





RE: Al 7075 alloy
You might want to visit the web site below and search out the topic aluminmum liquid metal (go to the full table of contents)
http://www.eaa.net/education/TALAT/index.htm
RE: Al 7075 alloy
RE: Al 7075 alloy
RE: Al 7075 alloy
Although it's not that difficult to successfully alloy the lightweight, high vapor pressure Mg (Zn also has high v.p.) under a proper flux, with stirring, you need to clean off the flux/slag and cast quickly into pre-baked (avoid steam explosiona!) molds.
The biggest problem is that the cast solidification structure must be rolled to break up the primary solidification intermetallics (hot roll), followed by a solutionizing heat treatment & quench to homogenize the alloy. Necessary for a wrought microstructure.