Effect of precipitates on microstructural evolution of 7050 Al alloy sheet during equal channel angular rolling

C. Y. Nam; J. H. Han; Y. H. Chung; M. C. Shin

doi:10.1016/S0921-5093(02)00597-X

Effect of precipitates on microstructural evolution of 7050 Al alloy sheet during equal channel angular rolling

C. Y. Nam
, J. H. Han
, Y. H. Chung
, M. C. Shin

Materials Science and Engineering

Korea Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

107 Scopus citations

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 sheet's grain size decreases ∼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.

Original language	English
Pages (from-to)	253-257
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	347
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(02)00597-X
State	Published - Apr 25 2003

Keywords

7050 Al alloy
Equal channel angular rolling
Grain refinement
Precipitate

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10.1016/S0921-5093(02)00597-X

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title = "Effect of precipitates on microstructural evolution of 7050 Al alloy sheet during equal channel angular rolling",

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 sheet's grain size decreases ∼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 = "7050 Al alloy, Equal channel angular rolling, Grain refinement, Precipitate",

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T1 - Effect of precipitates on microstructural evolution of 7050 Al alloy sheet during equal channel angular rolling

AU - Nam, C. Y.

AU - Han, J. H.

AU - Chung, Y. H.

AU - Shin, M. C.

PY - 2003/4/25

Y1 - 2003/4/25

N2 - 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 ∼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.

AB - 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 ∼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.

KW - 7050 Al alloy

KW - Equal channel angular rolling

KW - Grain refinement

KW - Precipitate

UR - https://www.scopus.com/pages/publications/0037466645

U2 - 10.1016/S0921-5093(02)00597-X

DO - 10.1016/S0921-5093(02)00597-X

M3 - Article

AN - SCOPUS:0037466645

SN - 0921-5093

VL - 347

SP - 253

EP - 257

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Effect of precipitates on microstructural evolution of 7050 Al alloy sheet during equal channel angular rolling

Abstract

Keywords

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