Effect of rolling geometry on the mechanical properties, microstructure and recrystallization texture of Al-Mg-Si alloys

• Published in: International journal of minerals, metallurgy and materials Vol. 22; no. 7; pp. 738 - 747
• Main Authors: Wang, Xiao-feng, Guo, Ming-xing, Cao, Ling-yong, Wang, Fei, Zhang, Ji-shan, Zhuang, Lin-zhong
• Format: Journal Article
• Language: English
• Published: Beijing University of Science and Technology Beijing 01.07.2015; Springer Nature B.V; State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
• Subjects: Aging; Aging (natural); Alloys; Aluminum base alloys; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Cold rolling; Composites; Corrosion and Coatings; Deformation; Deformation effects; Electron back scatter; Elongation; Geometry; Glass; Magnesium; Materials Science; Mechanical properties; Metal sheets; Metallic Materials; Microstructure; Natural Materials; Recrystallization; Silicon; Surface layers; Surface properties; Surfaces and Interfaces; Tensile tests; Texture; Thin Films; Tribology; rolling; microstructure; texture; aluminum–magnesium–silicon alloys; mechanical properties; surface quality; microstructure; texture; aluminum-magnesium-silicon alloys
• ISSN: 1674-4799; 1869-103X
• DOI: 10.1007/s12613-015-1129-4

The effect of rolling geometry on mechanical properties, microstructure, and recrystallization texture of Al-Mg-Si alloys was studied by means of tensile tests, microstructural observations, and electron backscatter diffraction measurements. The results reveal that the elongation and the average plasticity strain ratio ( r ) values of the T4P (pre-aging plus natural aging)-treated alloy sheet with a rolling geometry value between 1 and 3 are somewhat higher than those of the T4P-treated sheet with a rolling geometry value between 3 and 6. The deformation and recrystallization microstructures of the sheet with a rolling geometry value between 1 and 3 are more uniform than those of the sheet with a rolling geometry value between 3 and 6. The former also possesses somewhat higher surface quality. H {001}〈110〉 and Goss {110}〈001〉 orientations are the main recrystallization texture components for the former case, whereas the latter case only includes H{001}〈110〉 orientation. Texture gradients are present in the two alloy sheets. Shear texture component F on the surface of the sheet with a rolling geometry value between 3 and 6 and its higher texture gradients have revealed that non-uniform deformation occurred during cold rolling. The effects of texture on the yield strength and r value were also discussed.