Effect of of Yb, Cr and Zr additions on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloys

K. H. Chen; H. C. Fang; Z. Zhang; X. Chen; G. Liu

doi:10.1016/j.msea.2008.07.028

Effect of of Yb, Cr and Zr additions on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloys

K. H. Chen
, H. C. Fang
, Z. Zhang
, X. Chen
, G. Liu

School of Materials Science and Engineering

Central South University

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

128 Scopus citations

Abstract

The effect of complex additions of Yb, Cr and Zr on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloy has been investigated. By complex additions of Yb, Cr and Zr to Al-Zn-Mg-Cu alloy, 20-50 nm dispersoids were formed in Al matrix and identified by X-ray diffraction analysis and energy dispersive X-ray spectroscopy as Zn, Mg, Cu, Zr-containing YbCr₂A1₂₀ with cubic CeCr₂Al₂₀ crystal structure. The dispersoids remarkably inhibited the recrystallization of Al matrix, and a lot of low angle grain boundary of the Al-Zn-Mg-Cu alloy by complex additions of Zr, Cr and Yb investigated by electron back scattered diffraction was retained. Complex additions of Yb, Cr and Zr to Al-Zn-Mg-Cu alloy remarkably enhanced resistance to stress corrosion cracking (K_ISCC) from 9.8 to 17.0 MPa m^1/2, exfoliation corrosion from EB+ to EA and intergranular corrosion with the improved strength, fracture toughness and ductility.

Original language	English
Pages (from-to)	426-431
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	497
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2008.07.028
State	Published - 15 Dec 2008

Keywords

Dispersoid
Exfoliation corrosion
Intergranular corrosion
Recrystallization
Ytterbium

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10.1016/j.msea.2008.07.028

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title = "Effect of of Yb, Cr and Zr additions on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloys",

abstract = "The effect of complex additions of Yb, Cr and Zr on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloy has been investigated. By complex additions of Yb, Cr and Zr to Al-Zn-Mg-Cu alloy, 20-50 nm dispersoids were formed in Al matrix and identified by X-ray diffraction analysis and energy dispersive X-ray spectroscopy as Zn, Mg, Cu, Zr-containing YbCr2A120 with cubic CeCr2Al20 crystal structure. The dispersoids remarkably inhibited the recrystallization of Al matrix, and a lot of low angle grain boundary of the Al-Zn-Mg-Cu alloy by complex additions of Zr, Cr and Yb investigated by electron back scattered diffraction was retained. Complex additions of Yb, Cr and Zr to Al-Zn-Mg-Cu alloy remarkably enhanced resistance to stress corrosion cracking (KISCC) from 9.8 to 17.0 MPa m1/2, exfoliation corrosion from EB+ to EA and intergranular corrosion with the improved strength, fracture toughness and ductility.",

keywords = "Dispersoid, Exfoliation corrosion, Intergranular corrosion, Recrystallization, Ytterbium",

author = "Chen, \{K. H.\} and Fang, \{H. C.\} and Z. Zhang and X. Chen and G. Liu",

year = "2008",

month = dec,

day = "15",

doi = "10.1016/j.msea.2008.07.028",

language = "英语",

volume = "497",

pages = "426--431",

journal = "Materials Science and Engineering: A",

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TY - JOUR

T1 - Effect of of Yb, Cr and Zr additions on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloys

AU - Chen, K. H.

AU - Fang, H. C.

AU - Zhang, Z.

AU - Chen, X.

AU - Liu, G.

PY - 2008/12/15

Y1 - 2008/12/15

N2 - The effect of complex additions of Yb, Cr and Zr on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloy has been investigated. By complex additions of Yb, Cr and Zr to Al-Zn-Mg-Cu alloy, 20-50 nm dispersoids were formed in Al matrix and identified by X-ray diffraction analysis and energy dispersive X-ray spectroscopy as Zn, Mg, Cu, Zr-containing YbCr2A120 with cubic CeCr2Al20 crystal structure. The dispersoids remarkably inhibited the recrystallization of Al matrix, and a lot of low angle grain boundary of the Al-Zn-Mg-Cu alloy by complex additions of Zr, Cr and Yb investigated by electron back scattered diffraction was retained. Complex additions of Yb, Cr and Zr to Al-Zn-Mg-Cu alloy remarkably enhanced resistance to stress corrosion cracking (KISCC) from 9.8 to 17.0 MPa m1/2, exfoliation corrosion from EB+ to EA and intergranular corrosion with the improved strength, fracture toughness and ductility.

AB - The effect of complex additions of Yb, Cr and Zr on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloy has been investigated. By complex additions of Yb, Cr and Zr to Al-Zn-Mg-Cu alloy, 20-50 nm dispersoids were formed in Al matrix and identified by X-ray diffraction analysis and energy dispersive X-ray spectroscopy as Zn, Mg, Cu, Zr-containing YbCr2A120 with cubic CeCr2Al20 crystal structure. The dispersoids remarkably inhibited the recrystallization of Al matrix, and a lot of low angle grain boundary of the Al-Zn-Mg-Cu alloy by complex additions of Zr, Cr and Yb investigated by electron back scattered diffraction was retained. Complex additions of Yb, Cr and Zr to Al-Zn-Mg-Cu alloy remarkably enhanced resistance to stress corrosion cracking (KISCC) from 9.8 to 17.0 MPa m1/2, exfoliation corrosion from EB+ to EA and intergranular corrosion with the improved strength, fracture toughness and ductility.

KW - Dispersoid

KW - Exfoliation corrosion

KW - Intergranular corrosion

KW - Recrystallization

KW - Ytterbium

UR - https://www.scopus.com/pages/publications/53349164536

U2 - 10.1016/j.msea.2008.07.028

DO - 10.1016/j.msea.2008.07.028

M3 - 文章

AN - SCOPUS:53349164536

SN - 0921-5093

VL - 497

SP - 426

EP - 431

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Effect of of Yb, Cr and Zr additions on recrystallization and corrosion resistance of Al-Zn-Mg-Cu alloys

Abstract

Keywords

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