Conclusions
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1.
The optimum heat treatment providing a good combination of strength properties and corrosion resistance for alloy V96Ts1 is two-stage aging by the schedule: 120°C for 3 h+ 175°C for 4 h (T2 and T3). Strength properties of the alloy in the longitudinal direction are somewhat higher than in the transverse direction as a result of the press effect.
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2.
Strengthening of alloy V96Ts1 proceeds as a result of η- and T-phase, and the amount of T-phase in the alloy is much less than η-phase.
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3.
With a changeover from phase to coalescence aging the corrosion resistance of alloy V96Ts1 increases, and this is connected with formation of stable η- and T-phase particles and with an increase in the distance between particles and also with their intense precipitation within grains, as a result of which the difference in potential between grains and grain boundary zones is reduced.
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Literature cited
I. N. Fridlyander, High-Strength Wrought Aluminum Alloys [in Russian], Oborongiz, Moscow (1960).
I. N. Fridlyander, Wrought Aluminum Structural Alloys [in Russian], Metallurgiya, Moscow (1969).
I. N. Fridlyander, O. G. Senatorova, V. S. Sandler, and I. N. Gusev, "Change in the properties and structure of V95pch alloy sheets during two-stage aging," Metalloved. Term. Obrab. Met., No. 3, 38–40 (1980).
Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 23–25, July, 1985.
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Fridlyander, I.N., Noskova, O.A., Silaeva, V.I. et al. Effect of second-stage schedules of two-stage aging on the structure and properties of alloy V96Ts1. Met Sci Heat Treat 27, 501–505 (1985). https://doi.org/10.1007/BF00699578
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DOI: https://doi.org/10.1007/BF00699578