Details

Autor(en) / Beteiligte

• Kishchik, A. A.
• Aksenov, S. A.
• Kishchik, M. S.
• Demin, D. O.
• Churyumov, A. Yu
• Mikhaylovskaya, A. V.

Titel

The Microstructure and Mechanical Properties of Al–Mg–Fe–Ni–Zr–Sc Alloy after Isothermal Multidirectional Forging

Ist Teil von

• Physics of metals and metallography, 2023-06, Vol.124 (6), p.623-631

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The effects of isothermal multidirectional forging (IMF) on the grain structure, second-phase particles of solidification origin, and dispersoids in the Al–4.9Mg–0.9Ni–0.9Fe–0.2Zr–0.1Sc alloy have been investigated. The strain distribution over the sample volume during forging in a closed die has been analyzed using a finite-element simulation. A method of considering the friction effect and changes in strain rate when constructing stress–strain curves based on the IMF results has been proposed. Increasing the number of phase cycles at 350°C has resulted in a two-fold decrease in the average phase particle size of solidification origin and the formation of a structure with an average grain size of 1.3 ± 0.2 μm, but did not change the parameters of dispersoids. IMF increased the yield strength of the alloy by 60% and the tensile strength by 20%.