Methods for reducing residual stresses during hardening of high-strength aluminum alloys

Nefedova Yu.N., Shlyapnikova T.A., Ivanov A.L., Sidelnikov V.V.
UDC
669.715
DOI
10.18577/2307-6046-2023-0-7-23-33
Article PDF (Russian) (977.02 KB)
How to cite
Nefedova Yu.N., Shlyapnikova T.A., Ivanov A.L., Sidelnikov V.V. Methods for reducing residual stresses during hardening of high-strength aluminum alloys // Proceedings of VIAM. 2023. No. 7. DOI: 10.18577/2307-6046-2023-0-7-23-33. URL: https://test.viam.ru/en/journal/2023/7/3
Keywords
aluminium alloy, low-distortion quenching, polymer medium, uphill quenching, residual stress, distortion, mechanical properties
Abstract

Reducing warpage and residual stresses during hardening is an urgent problem in the production of parts and semi-finished products from aluminum alloys. Water is usually used as a cooling medium during quenching, and, for volumetric forgings, hot or boiling water, depending on the composition of the alloy. However, water as a quenching medium has significant drawbacks: uneven (three-stage) cooling due to a change in the state of aggregation, sharpness of cooling and, accordingly, the creation of large warpage and residual stresses in the case of using cold water, an insufficient degree of reduction in warpage and residual stresses during cooling in hot water, low speed cooling and, accordingly, the deterioration of the properties of most alloys during quenching in boiling water. Discusses in detail various methods for reducing warping and residual stresses during hardening in parts made of high-strength aluminum alloys.

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