Nam, CY Han, JH Chung, YH Shin, MC 2024-01-21T09:03:46Z 2024-01-21T09:03:46Z 2021-09-03 2003-04-25 0921-5093 https://pubs.kist.re.kr/handle/201004/138637 Microstructural evolution during equal channel angular rolling (ECAR) is investigated in a 7050 Al alloy sheet that includes two types of precipitates, large plate-type MgZn2 and fine spherical Al3Zr. With increasing number of ECAR passes, gradual fragmentation of MgZn2 precipitates and subsequent grain refinement are revealed by transmission electron microscopy. After 6 passes of ECAR, the sheet's grain size decreases to similar to 600 nm and most large plate-type MgZn2 precipitates are fragmented into fine spherical particles. Roles of the two types of precipitates on the evolution of fine-grained structure are discussed. (C) 2002 Elsevier Science B.V. All rights reserved. English ELSEVIER SCIENCE SA Effect of precipitates on microstructural evolution of 7050 Al alloy sheet during equal channel angular rolling Article 10.1016/S0921-5093(02)00597-X 1 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.347, no.1-2, pp.253 - 257 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 347 1-2 253 257 scie scopus 000181116400029 2-s2.0-0037466645 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Science & Technology - Other Topics Materials Science Metallurgy & Metallurgical Engineering Article equal channel angular rolling precipitate grain refinement 7050 Al alloy