Abstract
In order to understand the stress corrosion behavior of super-high strength aluminum alloys by spray forming, different aluminum alloys by different heat treatment was made. The results showed that the alloy with peak aging has the most sensitive stress corrosion cracking, the crack can even be seen using eyes; the alloys with two step aging were better than one step aging alloys, the alloys has not been found stress corrosion cracking.
Highlights
The results showed that the alloy with peak aging has the most sensitive stress corrosion cracking, the crack can even be seen using eyes; the alloys with two step aging were better than one step aging alloys, the alloys has not been found stress corrosion cracking
Aluminum alloys especially super-high aluminum alloys often restrict to use as structural materials because of stress corrosion cracking
Their properties can be improved by appropriate heat treatment such as two step aging and retrogression and reaging (RRA)
Summary
Aluminum alloys especially super-high aluminum alloys often restrict to use as structural materials because of stress corrosion cracking. Their properties can be improved by appropriate heat treatment such as two step aging and retrogression and reaging (RRA). Spray forming as a promising method was used to manufacture high properties aluminum alloys such as 7000 series aluminum alloys. Spray forming processing, which combines the advantages of rapid solidification, homogeneous microstructure containing fine grains and avoiding the macro segregation, and high solute content, has already been applied to improve the properties of many alloys. The stress corrosion cracking properties of the alloys by spray forming were researched. The microstructure and mechanical properties of the alloys were introduced
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