Lee, JC Suh, JY Ahn, JP 2024-01-21T09:13:11Z 2024-01-21T09:13:11Z 2021-09-03 2003-03 1073-5623 https://pubs.kist.re.kr/handle/201004/138802 Commercially pure Al alloy sheets were processed using high-strain-rate, dissimilar-channel angular pressing (DCAP) for as many as 100 passages through a channel with phi = 120 deg, to investigate the work hardening caused by a low strain level (epsilon < 2) and the work softening caused by an extremely high strain level (3 < epsilon < 58). The hardness of the alloy increased significantly by a factor of 2 at strains less than similar to2, while a gradual decrease in the hardness was observed at strains greater then similar to2. The work-hardening and the work-softening behaviors observed from the Al alloy were analyzed by correlating the measured properties with microstructural evolutions observed by transmission electron microscopy (TEM). A detailed micro structural-evolution sequence occurring at successive strain stages was also investigated based on TEM and electron backscattered diffraction (EBSD). English SPRINGER DEFORMATION REFINEMENT DUCTILITY EVOLUTION STEEL Work-softening behavior of the ultrafine-grained Al alloy processed by high-strain-rate, dissimilar-channel angular pressing Article 10.1007/s11661-003-0097-x 1 METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v.34, no.3, pp.625 - 632 METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 34 3 625 632 scie scopus 000181352400020 2-s2.0-0037353776 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article DEFORMATION REFINEMENT DUCTILITY EVOLUTION STEEL