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| Inhomogeneity of Properties of 7150-T7751 Aluminum Alloy Thick Plate |
| CONG Fuguan1, 2 ZHAO Gang1** TIAN Ni1 LI Ruifeng1 |
1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education),
Northeastern University, Shenyang 110004
2. Northeast Light Alloy Co., Ltd., Harbin 150060 |
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Cite this article:
CONG Fuguan, ZHAO Gang, TIAN Ni, LI Ruifeng. Inhomogeneity of Properties of 7150-T7751 Aluminum Alloy Thick Plate. Chinese Journal of Materials Research, 2013, 27(2): 144-148.
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Abstract ABSTRUCT The microstructure and property of 80mm thick 7150-T7751 aluminum alloy plate in different layers were investigated by tensile properties, optical microscopy(OM), composition analysis, scanning electron microscopy(SEM), electron back-scattering diffraction(EBSD) and texture tests. The results show that the microstructure and tensile property in different layers of 7150-T7751 aluminum alloy of 80mm thick are inhomogeneous and the inhomogeneity has no correlation with macrosegregstion of the composition. The tensile property show obvious anisotropy in the plate and the characteristics of anisotropy at different layers are different. The strength of the rolling direction at the center is higher than that of the transverse direction. The strength of the rolling direction at the quarter is the smallest and is lower than that of the transverse direction. The texture of solution and ageing plate is stronger although the rolling deformation degree is smaller at the center of plate. The higher strength can be obtained along the long direction of coarse grain when the coarse and long recrystallization grains and the fine equiaxed grains are matching in 7150-T7751 aluminium alloy plate.
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