High-strength and high-toughness 2XXX aluminum alloy forging production process

Abstract

The invention relates to a high-strength and high-toughness 2XXX aluminum alloy forging production process. The high-strength and high-toughness 2XXX aluminum alloy forging production process is characterized in that high-strength and high-toughness 2XXX aluminum alloy forgings are machined by ingredients for aluminum alloy ingot machining through smelting, double-stage homogenization, extrusion blank molding, extrusion blank annealing, forging formation and quick T6 heat treatment in sequence. During solid-solution aging, a high temperature of one temperature point above a heat absorbing point is adopted for short-time maintenance; at this time, heat is insufficient to melt intercrystalline metal, but is enough to refine intercrystalline compounds to melt in basal bodies, so that the strength and the plasticity of alloys are improved.

Description

technical field [0001] The invention relates to a production process of a high-strength and high-toughness 2XXX aluminum alloy forging, belonging to the technical field of aluminum alloy processing. Background technique [0002] 2XXX aluminum alloys are heat-treatable and strengthened alloys with excellent properties such as high strength, high toughness, and corrosion resistance. 2XXX aluminum alloys are widely used in aerospace, military equipment and related civil industries. Its performance mainly depends on the streamline direction, the type, size and shape of intragranular and intergranular precipitated phases. Therefore, it is of great practical significance and use value to adjust the microstructure of aluminum alloy through heat treatment and fully tap the potential of 2XXX aluminum alloy to meet the high-tech requirements of aerospace and other high-tech fields for aluminum alloys. [0003] At present, during heat treatment, 2XXX alloys have coarse secondary part...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a production process for high-strength and high-toughness 2XXX aluminum alloy forgings, aiming at problems such as low strength, plasticity, low fatigue life, and poor corrosion resistance of 2XXX aluminum alloy forgings in the prior art.

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