Characterization of Cu Distribution in an Al-0.3%Cu Alloy Cold Rolled to 98%

被引：5

作者：

Shuai, L. F. ^{[1
]}

Huang, T. L. ^{[1
,2
]}

Wu, G. L. ^{[1
,2
]}

Hansen, N. ^{[3
]}

Huang, X. ^{[3
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China

[2] Chongqing Univ, Electron Microscopy Ctr, Chongqing 400045, Peoples R China

[3] Tech Univ Denmark, Sect Mat Sci & Adv Characterizat, Dept Wind Energy, DK-4000 Roskilde, Denmark

来源：

38TH RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE | 2017年 / 219卷

关键词：

STRENGTH; DEFORMATION; DUCTILITY; ARB;

D O I：

10.1088/1757-899X/219/1/012038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the distribution of Cu element in a Al (99.9996% purity)-0.3% Cu alloy cold rolled to 98% has been characterized in detail by using three-dimensional atom probe (3DAP) and ChemiSTEM techniques. The cold rolled structure is a typical high strain lamellar structure with an average boundary spacing of 200 nm, indicating a strong role of the small amount of Cu element in stabilizing the microstructure to form the fine scale structure. A heavy segregation of Cu element in the lamellar boundaries of high angles has been observed and the Cu concentration in the boundaries can be as high as 20 times of the nominal concentration of the alloy, which is considered as the main reason for a formation of a stable nanoscale lamellar structure.

引用

页数：6

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