Knowledge Of Alloys
Dec 25, 2021
Definition of alloy: The so-called alloy refers to a metal substance formed by fusion of two or more metal elements. The performance of various fused metal objects is much better than that of pure metal elements. Therefore, whether it is in our life or in work, the metal materials belong to alloy products.
Structure types of alloys: intermetallic alloys, mixture alloys, solid solution alloys.
One: Intermetallic alloy: refers to the alloy in which the components form compounds with each other. Such as: brass composed of copper and zinc.
Two: Mixed alloys. When the liquid alloy solidifies, the components of the alloy are crystallized separately, such as solder, bismuth-cadmium alloy, etc.
Three: solid solution alloy. Alloys that form solid solutions when the liquid alloy solidifies, such as gold and silver alloys;
Alloy properties:
One: The hardness is generally greater than that of any metal in its composition.
Two: The melting point of most alloys is lower than the melting point of any of the constituent metals in their components.
Three: strong corrosion resistance.
Four: The electrical conductivity and thermal conductivity of the alloy are lower than those of any component metal.
Common alloys: medical lead, low temperature solder, low temperature zinc alloy, lead-tin alloy, tin alloy, manganese steel, stainless steel, brass, bronze, cupronickel, solder, duralumin.
