Influence of Combined Helical and Pass Rolling on Structure and Residual Porosity of an AA6082-0.2 wt % Al2O3 Composite Produced by Casting with Ultrasonic Processing
Eugeny Naydenkin,
Ivan Mishin,
Anton Khrustalyov,
Sergey Vorozhtsov,
Alexander Vorozhtsov
Affiliations
Eugeny Naydenkin
Laboratory of Physical Materials Science, Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, pr. Akademicheskiy 2/4, 634055 Tomsk, Russia
Ivan Mishin
Laboratory of Physical Materials Science, Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, pr. Akademicheskiy 2/4, 634055 Tomsk, Russia
Anton Khrustalyov
Laboratory of Physical Materials Science, Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, pr. Akademicheskiy 2/4, 634055 Tomsk, Russia
Sergey Vorozhtsov
Laboratory of Physical Materials Science, Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, pr. Akademicheskiy 2/4, 634055 Tomsk, Russia
Alexander Vorozhtsov
Faculty of Physics and Engineering, National Research Tomsk State University, Lenin Av. 36, 634050 Tomsk, Russia
The influence of combined (helical and pass) rolling on the structure, residual porosity, and microhardness of an AA6082-0.2 wt % Al2O3 composite produced by casting with ultrasonic processing was evaluated in comparison with the matrix alloy. The nanosized alumina particles resulted in a more homogeneous and fine-grained structure of the composite after deformation with higher microhardness in comparison with the matrix alloy. However, the residual porosity of the AA6082-0.2 wt % Al2O3 composite was retained even after combined rolling on the level typical of alloys produced by the method, which may be a result of relatively low stresses and strains introduced during deformation.
