The Study of the Structure and Properties of Pressed Strips Made of a V-1977 Ultrahigh-Strength Aluminum Alloy after Two-Step Aging.

Autor: Nechaikina, T. A., Somov, A. V., Ivanov, A. L., Kozlova, O. Yu.
Zdroj: Inorganic Materials: Applied Research; Feb2022, Vol. 13 Issue 1, p88-93, 6p
Abstrakt: Studies of the structure and properties of pressed strips made of a promising V-1977 highly doped aluminum alloy of the Al–Zn–Mg–Cu system with the addition of Zr after two-step aging are conducted. It is found that a characteristic feature of the microstructure of the V-1977 alloy after two-step aging is the uniform distribution of the platelike nanoparticles of the main strengthening metastable hexagonal η' phase throughout the grain body and larger particles of the stable η phase along the grain boundaries. It is shown that, at a high level of the strength characteristics, the values of the fracture toughness exceed the level of the values of high-strength aluminum alloys, which is achieved owing to the chemical composition of the V-1977 alloy balanced with respect to the doping elements and impurities as well as the chosen temperature–time parameters of two-step aging. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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