Discovery of Duralumin
This alloy was discovered in Prussian Germany by Alfred Wilm, a metallurgist engineer. In 1903, Wilm was commissioned by the German War Munitions factory of Berlin to find a strong aluminum alloy that could be used for ammunition. After years of experimentation, in 1908, the alloy was ready to be released for commercial production.
The process in which Duralumin is manufactured involves a series of heat treatments. Before the heat treatment the alloy is malleable. The treatment induces a reaction between the aluminum and magnesium which increases overall strength and hardness.
Before the heat treatment, duralumin can be easily manipulated into wire.
Duralumin is a very light alloy.
After heat treatment, duralumin has increased tensile strength.
Resistant to Corrosion
Metallurgic bonding can increase corrosion resistance.
Reactions with surrounding oxygen can form aluminum oxide.
Heating duralumin induces a reaction between the aluminum and the magnesium which increases hardness and strength.
Since duralumin is both strong and lightweight it is commonly used on aircrafts. It is also used to produce wire, rods, machinery, etc.