Effect of Treatment Parameters on Grain Structure and Mechanical Properties of Sheets of Al – 3% Mg Alloy with Zr and Ti Additions


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Abstract

The microstructure, mechanical properties and superplasticity indices of sheets of aluminum alloy Al – 3% Mg with 0.3% Zr and 0.1% Ti are studied. Use of low-temperature homogenizing (at 360°C) and two-stage hot rolling (at 360 and 420°C) with intermediate annealing at 420°C (3 h) provides quite good thermal stability of alloy grain structure and improved strength properties at room temperature. The alloy exhibits signs of superplasticity with a constant deformation rate of 5 × 10–3 sec–1 and retains a virtually unrecrystallized structure after 200% deformation.

About the authors

A. G. Mochugovskii

National Research Technological University “MISiS”

Author for correspondence.
Email: mochugovskiy@mail.ru
Russian Federation, Moscow

A. V. Mikhailovskaya

National Research Technological University “MISiS”

Email: mochugovskiy@mail.ru
Russian Federation, Moscow

V. S. Levchenko

National Research Technological University “MISiS”

Email: mochugovskiy@mail.ru
Russian Federation, Moscow

V. K. Portnoi

National Research Technological University “MISiS”

Email: mochugovskiy@mail.ru
Russian Federation, Moscow

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