Abstract
The present work compares the microstructure and mechanical properties of 1050 aluminum subjected to constrained groove pressing (CGP) combined with cold rolling. Transmission electron microscopy observations showed that four passes of CGP refines the grain size to ~1.4 μm. Combining the CGP with cold rolling (rolling at a room temperature) brings about further reduction of the grain size and a significant improvement of the mechanical properties. It also changes the tensile deformation behavior of 1050 aluminum. The stress-strain curves of further cold rolled samples displayed a yield point phenomenon. A combination of high strength exceeding 300 MPa and good elongation to failure approaching 20% was obtained for 1050 aluminum after processing by 4 passes of CGP combined with subsequent 80% cold rolling.
Published Version
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