Experimental investigation of forming limit, void coalescence and crystallographic textures of aluminum alloy 8011 sheet annealed at various temperatures

• Published in: Archives of Civil and Mechanical Engineering 2014-05, Vol.14 (3), p.398-416
• Main Authors: Velmanirajan, K., Anuradha, K., Syed Abu Thaheer, A., Narayanasamy, R., Madhavan, R., Suwas, Satyam
• Format: Article
• Language: English
• Subjects: Aluminum base alloys; Anisotropy; Annealing; Civil Engineering; Crystallography; Engineering; Formability; Forming limit diagrams; Mechanical Engineering; Original Research Article; Structural Materials; Tensile properties
• ISSN: 1644-9665; 2083-3318
• DOI: 10.1016/j.acme.2013.10.009

In this work, a combined forming and fracture limit diagram, fractured void coalescence and texture analysis have been experimentally evaluated for the commercially available aluminum alloy Al 8011 sheet annealed at different temperatures viz. 200 °C, 250 °C, 300 °C and 350 °C. The sheets were examined at different annealing temperatures on microstructure, tensile properties, formability and void coalescence. The fractured surfaces of the formed samples were examined using scanning electron microscope (SEM) and these images were correlated with fracture behavior and formability of sheet metals. Formability of Al 8011 was studied and examined at various annealing temperatures using their bulk X-ray crystallographic textures and ODF plots. Forming limit diagrams, void coalescence parameters and crystallographic textures were correlated with normal anisotropy of the sheet metals annealed at different temperatures.