Formability Analysis of AA5754 Alloy at Warm Condition: Appraisal of Strain Rate Sensitive Index. (2015)

• Record Type: Journal Article
• Authors: Panicker, Sudhy S.; Panda, Sushanta Kumar
• Is Part Of: Materials today. Volume 2:Number 4/5(2015)
• Page Start: 1996
• Page End: 2004
• Publication Date: 2015
• Subjects: formability -- warm forming -- strain rate sensitivity index -- anisotropy; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2015.07.169
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Tensile properties of AA5754 alloy were evaluated within a temperature range 30-250˚C with three different strain rates. The total elongation was found to increase with temperature despite decrease in strain hardening exponent, and this is due to exponential rise of strain rate sensitive index (m-value). Formability evaluated by limiting dome height test was compared with the results obtained from FE simulations incorporating two different material models to investigate the effect of anisotropy parameters ( R -value) and m-value in warm forming. It was found that the improvement in formability in warm condition is significantly influenced by m-value.