Microstructures evolution and mechanical properties of 5052 aluminium alloy processed by constrained groove pressing

• DOI: 10.1504/ijcmsse.2018.095323
• Publication Date: 2018-10-04T07:38:04Z
• Authors: Kai huai Yang; Ze chang Zou; Jian min Zeng; Wen zhe Chen
• Keywords: Severe Plastic Deformation; Tensile testing; Elongation; 6063 aluminium alloy

Commercial 5052 aluminium alloy sheets were subjected to a severe plastic deformation technique known as constrained groove pressing (CGP) at room temperature. The impact of repeated CGP, upon the microstructure refinement was investigated by polarised optical microscope well transmission electron microscope. Changes in mechanical properties, measured tensile test and hardness test, related evolution microstructures. Moreover, microhardness, on polished cross-section each as-pressed sheet, plotted provide pictorial depiction homogeneity. results show that fragmentation dominates grain submicron size about 300 nm achieved imposing strains 4.64 utilising CGP technique. average microhardness increase dramatically after one pass then slightly increases with increasing passes, but homogeneous distribution decreases recovers subsequent passes result corresponding uniform microstructure. In addition, ultimate strength clearly elongation remains reasonably constant further passes.