Erbium and ytterbium containing aluminum alloy welding wire

Abstract

The invention discloses an erbium and ytterbium containing aluminum alloy welding wire which is prepared from the following components in percentage by mass: 2-3.5 percent of Mg, 0.12-0.2 percent of Ti, 0.15-0.3 percent of Cr, 0.08-0.2 percent of Mn, 0.01-0.05 percent of Ce, 0.05-0.15 percent of Te, 0.01-0.1 percent of B, 0.05-0.2 percent of Er, 0.05-0.2 percent of Yb, 0.2-0.5 percent of Zr, 0.05-0.15 percent of Ge, 0.1-0.8 percent of Sn, 0.5-2.5 percent of Mo, 1-3 percent of W, 0.5-1.5 percent of V, 4-5.8 percent of Cu, smaller than or equal to 0.3 percent of Fe plus Si, smaller than or equal to 0.2 percent of Zn, smaller than or equal to 0.05 percent of single content of other purity elements, smaller than or equal to 0.15 percent of total content of other purity elements and the balance of Al.

Description

technical field [0001] The invention relates to the field of welding wire technology, in particular to an aluminum alloy welding wire containing erbium and ytterbium. Background technique [0002] With the development of welding technology, aluminum and aluminum alloy welded structures have been widely used in civil and military fields, such as various chemical containers, vehicles, ships, aircraft, space probes, rockets, etc. Among them, the welding wire is an important factor affecting the weld metal structure, composition, solid-liquidus temperature, corrosion resistance of the weld, thermal cracking and mechanical properties of the base metal near the seam. The internal quality of aluminum alloy welding wire depends largely on the quality of the original aluminum. In the preparation process of aluminum alloy welding wire, the degassing effect of aluminum alloy melting is not good, which will make the hydrogen content of aluminum alloy welding wire high, resulting in mor...

AI Technical Summary

Problems solved by technology

In the preparation process of aluminum alloy welding wire, the degassing effect of aluminum alloy melting is not good, which will make the hydrogen content of aluminum alloy welding wire high, resulting in more pores in the welding process, and aluminum alloy has the defect of large thermal expansion coefficient. Cracks are prone to occur at the weld

Therefore, the existing aluminum alloy welding wire has the defects of low weld joint strength, poor plasticity and easy cracking when used, which limits its application.