An analysis of accumulated deformation in the Equal Channel Angular Rolling (ECAR) process

Accumulated deformation during a new ECAR process is analyzed. It is found that the effect of the normal strain component is not negligible. The minimum accumulated strain is measured as 0.408 in one-pass ECAR deformed 6063 aluminum alloy sheet. Submicron grain structure is obtained in a 6063 Al alloy sheet by 3-pass ECAR deformation and recrystallization at 250°C for 30 min. This article is based on a presentation made in the symposium “The 7^th KIM-JIM Symposium & the 3^rd International Symposium on nanostructured Materials Technology”, held at KINTEX, Ilsan, Korea, October 27–28, 2005 under auspices of the Korean Institute of Metals and Materials, The Japan Institute of Metals and Center for Nanostructured Materials Materials Technology.