Aluminum-copper alloy welding wire suitable for wire material additive manufacturing

Abstract

The invention discloses an aluminum-copper alloy welding wire suitable for wire material additive manufacturing. The aluminum-copper alloy welding wire is prepared from the following components of, bymass percentage, 0.3-0.5% of Manganese (Mn), 4.6-5.3% of Cuprum (Cu), 0.15-0.35% of Titanium (Ti), 0.0005-0.006% of Boron (B), 0.05-0.3% of Vanadium (V), 0.05-0.2% of Zirconium (Zr), 0.05-0.2% of Tin(Sn), not larger than 0.15% of Iron (Fe), not larger than 0.06% of Silicon (Si), not larger than 0.05% of magnesium (Mg), not larger than 0.1% of Zinc (Zn), not larger than 0.05% of other single impurity elements, not larger than 0.15% of total other impurity elements and the balance aluminum (Al). According to the welding wire, no toxic soot is generated during production and use, and the additive-forming accumulation body has uniform tissue, high strength and ductility mechanical properties and transverse and longitudinal uniformity and is free of toxic metal oxide on the surface.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to an aluminum-copper alloy welding wire suitable for wire material additive manufacturing. Background technique [0002] Al-Cu alloys have good specific strength and good toughness, and are widely used in military and aerospace fields. At present, several grades of high-strength Al-Cu alloys have been developed, such as 2319, 2519, 2024, ZL204A, ZL205A, etc. Deformed aluminum-copper alloys are difficult to achieve equal strength matching in the tailor welding process. Cast aluminum-copper alloys also have a wide crystallization temperature range, poor casting performance, difficult to achieve sequential solidification, and high wall thickness sensitivity, which is prone to loosening, thermal cracking, Casting defects such as oxidized slag inclusions. These problems limit the application range of Al-Cu alloy. Cranfield University in the United Kingdom has made great pro...

AI Technical Summary

Problems solved by technology

However, cast aluminum alloys such as ZL204A and ZL205A, due to the alloy element Cd with low vapor pressure, are severely burned during the printing process, and a layer of Cd oxide is attached to the surface of the accumulation. This substance is toxic, so this alloy cannot be used. Wire Additive Manufacturing Process

At present, no high-strength and tough aluminum alloy welding wire suitable for wire additive manufacturing has been reported.

Images