Microstructure and Properties of an Al-7.5Zn-1.5Mg-1.4Cu-0.12Zr Alloy Forging

Xi Wu Li; Bai Qing Xiong; Yong An Zhang; Zhi Hui Li; Jiang Hai You; Xiao Hui Yin; Yun Qiang Fan; Bao Hong Zhu

doi:10.4028/www.scientific.net/MSF.706-709.335

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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Microstructure and Properties of an...

Microstructure and Properties of an Al-7.5Zn-1.5Mg-1.4Cu-0.12Zr Alloy Forging

Abstract:

In this present work, the microstructure and properties of an Al-7.5Zn-1.5Mg-1.4Cu-0.12Zr alloy forging in T7452 condition has been investigated by means of OM, TEM and EBSD analysis and varied properties test. The results indicate that there are obvious differences in grain morphology, precipitation characteristics and recrystallization degree along the thickness direction of the forging. The strength of the alloy forging is stable and varies less than 10% along the thickness direction. The alloy forging in the T7452 condition shows high strength, high toughness and good corrosion resistance, with the UTS, TYS, elongation and electrical conductivity values being 500~530 MPa, 460~500 MPa, 7.0~15.0% and 23.9~24.2 MS/m, respectively, and the fracture toughness in L-T, T-L and S-L direction being 33.5~39.5, 25.5~27.0, 23.0~24.5 MPa.m^1/2, respectively, and the EXCO rating being EA.

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Periodical:

Materials Science Forum (Volumes 706-709)

Pages:

335-339

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.335

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Online since:

January 2012

Authors:

Xi Wu Li, Bai Qing Xiong, Yong An Zhang, Zhi Hui Li, Jiang Hai You, Xiao Hui Yin, Yun Qiang Fan, Bao Hong Zhu

Keywords:

Al-Zn-Mg-Cu Alloy, Forging, Microstructure, Property Analysis

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