Texture evolution and mechanical properties of Al–Mg–Si alloys at different intermediate annealing temperatures

Intermediate annealing treatment produces different effects on the state of particles in Al–Mg–Si alloy sheets, thereby affecting their recrystallization textures and formability. To improve the formability of the sheets, the effects of different intermediate annealing temperatures on the texture ev...

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Bibliographic Details
Published in:Rare metals 2019-10, Vol.38 (10), p.937-945
Main Authors: Li, Yong, Wang, Qi-Pan, Gao, Guan-Jun, Li, Jia-Dong, Wang, Zhao-Dong, Xu, Guang-Ming
Format: Article
Language:English
Subjects:
Alloys
Aluminum base alloys
Annealing
Automotive parts
Biomaterials
Chemistry and Materials Science
Constraint modelling
Energy
Evolution
Formability
Magnesium
Materials Engineering
Materials Science
Mechanical properties
Metal sheets
Metallic Materials
Nanoscale Science and Technology
Optical microscopes
Optical properties
Physical Chemistry
Plastic deformation
Recrystallization
Solution heat treatment
Tensile tests
Texture
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Summary:Intermediate annealing treatment produces different effects on the state of particles in Al–Mg–Si alloy sheets, thereby affecting their recrystallization textures and formability. To improve the formability of the sheets, the effects of different intermediate annealing temperatures on the texture evolution and mechanical properties of these sheets for automotive applications were studied using optical microscope (OM), scanning electron microscope (SEM) and tensile tests. The results reveal that intermediate annealing temperature has a significant influence on the recrystallization textures and average plastic strain ratio ( r ). After solution treatment, all the alloy sheets possess similar recrystallization texture components comprising of cube ND {100} and P {011} orientations, whereas a characteristic strong cube-oriented {100} texture is observed only in the alloy annealed at a temperature of 380 °C. However, in comparison with the alloy not annealed, and the alloy annealed at 550 °C, the alloy annealed at 380 °C possesses a lower average r value. Furthermore, the relationship between textures and r value was analyzed by using the Taylor full constraints model in this study. Graphic abstract
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-019-01315-1