Conclusions
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1.
The cycle for recovery treatment of AL27-1 alloy naturally aged for more than two years is heat at 250°C for 2 min in molten salt or metal.
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2.
After recovery treatment the alloy has the same tensile properties as after rehardening, the work for failure of a sample with a crack increases by three times, and in a number of cases the time until failure of samples in corrosion cracking tests increases by an order of magnitude in comparison with the original condition.
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Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 62–64, March, 1982.
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Polyanskii, V.M., Kovtanyuk, T.D., Karpov, V.N. et al. Recovery treatment of AL27-1 alloy. Met Sci Heat Treat 24, 221–223 (1982). https://doi.org/10.1007/BF01166860
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DOI: https://doi.org/10.1007/BF01166860