Improvement in the strength and ductility of Al-Mg-Mn alloys with Zr and Sc additions by equal channel angular pressing
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Abstract
The effect of equal channel angular pressing (ECAP) on the structure and mechanical properties of Al-4 % Mg-1.5 % Mn-0.4 % Zr and Al-4 % Mg-1.5 % Mn-0.4 % Zr-0.4 % Sc (wt.%) alloys in the initial as-cast and heat treated states was studied. The ECAP processing was shown to lead to the formation of a predominantly submicrocrystalline structure with an average grain size of 850 nm for initial as cast state and 860 nm for initial heat treated state in the Al–Mg–Mn–Zr–Sc alloy and 1060 nm for initial as cast state and 1240 nm for initial heat treated state in the Al–Mg–Mn–Zr alloy. It is remarkable that both strength and ductility of the two alloys in the initial conditions were enhanced by ECAP. The highest strength was observed in the Al–Mg–Mn–Zr–Sc alloy (UTS = 425 MPa), in combination with elongation to failure of EL = 17 %. The characteristics of strength and ductility after ECAP for the Al–Mg–Mn–Zr alloy as well as for the Al–Mg–Mn–Zr–Sc alloy were similar whether the initial state was as-cast or as-heat treated.
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© 2009, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Contents
- Editorial
- Review of IJMR's centenary year
- Proceedings of the SPD Workshop, Melbourne, June 2009
- Feature
- Processing by severe plastic deformation:an ancient skill adapted for the modern world
- Review
- Grain refinement and growth induced by severe plastic deformation
- Basic
- The nature of grain refinement in equal-channel angular pressing: a comparison of representative fcc and hcp metals
- Ductility of ultrafine-grained copper processed by equal-channel angular pressing
- Technical parameters affecting grain refinement by high pressure torsion
- Nanocrystalline body-centred cubic beta-titanium alloy processed by high-pressure torsion
- Softening of high purity aluminum and copper processed by high pressure torsion
- An atom probe characterisation of grain boundaries in an aluminium alloy processed by equal-channel angular pressing
- Deformation mechanisms in an ultra-fine grained Al alloy
- Applied
- The effect of back pressure on mechanical properties of an Mg-3 wt.% Al-1 wt.% Zn alloy with single pass equal channel angular pressing
- Nanostructuring of Ti-alloys by SPD processing to achieve superior fatigue properties
- Improvement in the strength and ductility of Al-Mg-Mn alloys with Zr and Sc additions by equal channel angular pressing
- The effect of initial microstructure and processing temperature on microstructure and texture in multilayered Al/Al(Sc) ARB sheets
- Plastic deformation analysis of accumulative back extrusion
- The possibility of synthesizing bulk nanostructured or ultrafine structured metallic materials by consolidation of powders using high strain powder compact forging
- Use of residual hydrogen to produce CP-Ti powder compacts for low temperature rolling
- Mg alloy for hydrogen storage processed by SPD
- DGM News
- Personal/Conferences/Imprint
Articles in the same Issue
- Contents
- Contents
- Editorial
- Review of IJMR's centenary year
- Proceedings of the SPD Workshop, Melbourne, June 2009
- Feature
- Processing by severe plastic deformation:an ancient skill adapted for the modern world
- Review
- Grain refinement and growth induced by severe plastic deformation
- Basic
- The nature of grain refinement in equal-channel angular pressing: a comparison of representative fcc and hcp metals
- Ductility of ultrafine-grained copper processed by equal-channel angular pressing
- Technical parameters affecting grain refinement by high pressure torsion
- Nanocrystalline body-centred cubic beta-titanium alloy processed by high-pressure torsion
- Softening of high purity aluminum and copper processed by high pressure torsion
- An atom probe characterisation of grain boundaries in an aluminium alloy processed by equal-channel angular pressing
- Deformation mechanisms in an ultra-fine grained Al alloy
- Applied
- The effect of back pressure on mechanical properties of an Mg-3 wt.% Al-1 wt.% Zn alloy with single pass equal channel angular pressing
- Nanostructuring of Ti-alloys by SPD processing to achieve superior fatigue properties
- Improvement in the strength and ductility of Al-Mg-Mn alloys with Zr and Sc additions by equal channel angular pressing
- The effect of initial microstructure and processing temperature on microstructure and texture in multilayered Al/Al(Sc) ARB sheets
- Plastic deformation analysis of accumulative back extrusion
- The possibility of synthesizing bulk nanostructured or ultrafine structured metallic materials by consolidation of powders using high strain powder compact forging
- Use of residual hydrogen to produce CP-Ti powder compacts for low temperature rolling
- Mg alloy for hydrogen storage processed by SPD
- DGM News
- Personal/Conferences/Imprint