Reaction Kinetics of Mg2Si in the Laser Welding Pool of Aluminum Alloys

The metallurgy reactions in the weld pool were analyzed with the application of reaction kinetics. Furthermore a formula to quantificationally calculate the amount of Mg2Si was generated. By means of calculating the thermodynamic condition of the reaction and combined with the verification testing, this article indicates that the metallurgical product Mg2Si was created in the liquid weld pool but not separated out from the arborescent crystal during its solid state. This thesis summarizes the precipitation mechanism of Mg2Si and explains the configuration, amount and location where Mg2Si was separated out by analyzing the phase diagrams and constitution diagrams. Relevant data suggests that: the content of Mg2Si is slightly less than Mg.

CMW 3950

CMW 3950 is a tungsten bearing sintered alloy of high density and high strength. It is a powder metallurgical product and one of a series of alloys with densities 50% greater than lead. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and bend strength as well as fracture toughness and fatigue. It also includes information on high temperature performance and corrosion resistance as well as machining and joining. Filing Code: W-11. Producer or source: CMW Inc. Originally published as Mallory 3950, March 1968, revised September 2000.

CMW 3000

CMW 3000 is a tungsten-bearing sintered alloy of high density and high strength. It is a powder metallurgical product and one of a series of alloys with densities 50% greater than lead. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and bend strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as machining and joining. Filing Code: W-3. Producer or source: CMW Inc. Originally published as Mallory 3000, January 1962, revised August 2000.

CMW 2000

CMW 2000 is a tungsten-bearing sintered alloy of high density and high strength. It is a powder metallurgical product and one of a series of alloys with densities 50% greater than lead. This datasheet provides information on composition, physical properties, hardness, tensile properties, and compressive and bend strength as well as fracture toughness and fatigue. It also includes information on high temperature performance and corrosion resistance as well as machining and joining. Filing Code: W-5. Producer or source: CMW Inc. Originally published as Mallory 2000, October 1963, revised July 2000.