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Abstract. The study attempts to evaluate the impact of short-term natural seasoning process on
the state of post-machining deformations of thin-walled elements made of the EN AW-2024
aluminium alloy. Analyses were made of the impact of the technological history of the semifinished
product, in this case – the rolling direction of the plate (perpendicular and parallel to
the feed direction) as well as high-performance machining strategies, such as High Speed
Cutting (HSC) and High Performance Cutting (HPC) on the value of deformations of thinwalled
samples, directly after machining and after seasoning. Application of natural seasoning
at reducing deformations of thin-walled elements made of aluminium alloys may prove an
alternative to the difficult intermediate heat treatment. The expected reduction of deformations
is a result of reducing residual stresses in the material, in the course of the relaxation process.
The dynamics of the natural relaxation is highly correlated with the properties of materials. The
study includes an analysis of the effects of a short-term relaxation, accepted in industrial
conditions (up to 1 month since the end of machining) for the EN AW-2024 alloy. If the
proposed solution gives positive effects, it can bring measurable economic benefits in
industrial applications. The study is completed with general and practical conclusions.
