Research of influence of homogenizing modes on mechanical properties of large bars from aluminum-lithium alloys V-1481

Oglodkov M.S., Grigoriev M.V., Pahomkin S.I., Ryabova E.N.
UDC
669.017.165
DOI
10.18577/2307-6046-2017-0-8-1-1
Article PDF (Russian) (892.24 KB)
How to cite
Oglodkov M.S., Grigoriev M.V., Pahomkin S.I., Ryabova E.N. Research of influence of homogenizing modes on mechanical properties of large bars from aluminum-lithium alloys V-1481 // Proceedings of VIAM. 2017. No. 8. DOI: 10.18577/2307-6046-2017-0-8-1-1. URL: https://test.viam.ru/en/journal/2017/8/1
Keywords
Al–Cu–Li, structure, properties, ingots, aluminum-lithium alloy, homogenization, technological plasticity, Al–Cu–Li.
Abstract

A study was made of the features of phase dissolution in the two-step homogenization of pi-lot-industrial ingots of B-1481 alloy based on the Al–Cu–Li system. It is shown that an increase in exposure at the second stage contributes to the almost complete dissolution of the nonequilibrium eutectic. Homogenization of ingots of alloy B-1481 according to the regime: the first stage – at a temperature of 70–100°C below the temperature of the nonequilibrium solidus, and the high-temperature second stage is slightly higher than the temperature of the nonequilibrium solidus, it allows achieving the most complete dissolution of phases precipitated during crystallization, Technological plasticity of the material at the temperature of hot deformation.

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