Effect of Warm Equal-Channel Angular Pressing on the Structure and Mechanical Properties of Al–Mg–Ca–Mn–Fe–Zr Alloy

• Published in: Physics of metals and metallography Vol. 122; no. 1; pp. 67 - 73
• Main Authors: Rogachev, S. O., Naumova, E. A., Karelin, R. D., Andreev, V. A., Perkas, M. M., Yusupov, V. S., Khatkevich, V. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2021; Springer; Springer Nature B.V
• Subjects: Alloys; Aluminum; Calcium; Chemistry and Materials Science; Dislocation density; Elongation; Equal channel angular pressing; Iron; Magnesium; Manganese; Materials Science; Mechanical properties; Metallic Materials; Nanoalloys; Nanoparticles; Specialty metals industry; Strength and Plasticity; Thermal stability; Zirconium; Zirconium alloys; Zirconium base alloys; microstructure; severe plastic deformation; ECAP; mechanical properties; Al–Mg-based alloy
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X21010105

— The effect of equal-channel angular pressing on the structure, mechanical properties, and thermal stability of the Al–5% Mg–1% Ca–0.9% Mn–0.5% Fe–0.1% Zr alloy has been studied. Samples in the annealed state have been subjected to ECAP under the following conditions: by route B C , at a temperature of 400°C, an angle of channel intersection of 110°, and the number of passes of N = 8. ECAP results in (i) the formation of a substructure with a high dislocation density and (ii) the precipitation of Al 6 (Mn, Fe) and Al 3 Zr nanoparticles in the alloy. ECAP increases both strength and plasticity of the alloy. The strength of the alloy after ECAP increases by a factor of 1.3–1.5 and the relative elongation, by a factor of 2.0–2.5 in comparison with the initial state.