Title of article
Effect of precipitates on microstructural evolution of 7050 Al alloy sheet during equal channel angular rolling
Author/Authors
Nam، نويسنده , , C.Y and Han، نويسنده , , J.H. and Chung، نويسنده , , Y.H. and Shin، نويسنده , , M.C، نويسنده ,
Pages
5
From page
253
To page
257
Abstract
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 sheetʹs grain size decreases 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.
Keywords
Equal channel angular rolling , Precipitate , Grain refinement , 7050 Al alloy
Journal title
Astroparticle Physics
Record number
2062209
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