Abstract:The evolution of microstructure, precipitate size, volume fraction and integrated intensity
of Al-8.0Zn-2.05Mg-1.76Cu (7055) and 7055-1.0Li alloys during isothermal ageing has been studied
by transmission electron microscopy (TEM) and synchrotron-radiation small angle X-ray scattering
(SAXS). According to the TEM results, referring to the thermodynamic phase diagram, it was found
that the addition of Li changed the types of the precipitates. T1 phase was observed in the 7055-1.0Li
alloy besides the GP zones, η… Show more
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