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.jpg?imageView2/2/w/400/format/jpg/q/75 "Cut Off Wheels")
Cut Off Wheels
Product Description
Cutting is the first step in a complete material analysis,the selection of cutt...
AZ31 magnesium alloy is a typical deformed magnesium alloy. With magnesium as the matrix, it provides the alloy with the basic characteristic of low density, which gives AZ31 magnesium alloy a significant advantage in lightweight applications. With its high ductility, high thermal conductivity and good electromagnetic shielding property, it is widely used in structural components of aerospace, automotive parts, electronic products and other fields. 
Now, the thin plates of AZ magnesium alloy (Al% : 2.5-3.5, Zn% : 0.6-1.4, Mn% : 0.2-1.0, and the remaining Mg) are polished and sampled.
The sample has been cut into small pieces and directly embedded with TJ2227 conductive epoxy resin and Thetamount pressure cold mounting machine for subsequent SEM observation. Then, the sample is prepared on the Alpha208 dual-control dual-disc grinding and polishing machine. The specific steps are as follows:
1. For surface grinding with silicon carbide sandpaper P800/P1200/P2000, to prevent mounting, wax should be applied to the surface of the sandpaper. Grind with a small force value and rinse with alcohol after each pass.
2. Coarse polishing is carried out using YS polishing cloth and water-free 3-micron diamond polishing suspension.
3. Fine polishing is carried out using ET polishing cloth and water-free 1-micron alumina polishing suspension.
Observed with an MN80 metallographic microscope, the surface of the polished sample was smooth, and the crack direction was clearly visible. The black granular phase was a hard strengthening phase. The specific composition still needs to be analyzed by subsequent SEM+EDS.
