Microstructure and Phase Composition of Novel Crossover Al-Zn-Mg-Cu-Zr-Y(Er) Alloys with Equal Zn/Mg/Cu Ratio and Cr Addition

• Published in: Metals (Basel ) Vol. 14; no. 5; p. 547
• Main Authors: Glavatskikh, Maria V., Barkov, Ruslan Yu, Gorlov, Leonid E., Khomutov, Maxim G., Pozdniakov, Andrey V.
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.05.2024
• Subjects: Aging; Aluminum alloys; Aluminum base alloys; Chromium; Copper; Corrosion currents; Corrosion potential; Corrosion resistance; Corrosion tests; Electrodes; Equilibrium; Erbium; Grain boundaries; Hardness; Heat resistance; Intermetallic phases; Investigations; Magnesium compounds; Mechanical properties; Metal silicides; Microstructure; Nucleation; Phase composition; Precipitates; Recrystallization; Scanning electron microscopy; Sensors; Solid solutions; Solidification; Solution heat treatment; Specialty metals industry; Temperature; Tensile properties; Titanium; Yttrium; Zinc; Zirconium

The effect of 0.2%Cr addition on the structure, phase composition, and mechanical properties of the novel cast and wrought Al-2.5Zn-2.5Mg-2.5Cu-0.2Zr-Er(Y) alloys were investigated in detail. Chromium is distributed between primary crystals (5.7–6.8%) of the intermetallic phase and the aluminum soli...