Abstract
This paper presents the results of intentional Aluminum addition on formability of commercial DP1180 steel grades produced at ArcelorMittal. Formability was evaluated using a suite of tests such as bending under tension test, the plane strain forming limit, crack propagation resistance using compact tension test, hole expansion, bendability, etc. Results of these formability tests demonstrated that the local formability, especially the resistance to edge fracture of the product with higher Al addition was improved in comparison with the nominal product. In addition, more detailed microstructural characterization and mechanical behavior of the products was conducted to further the understanding of the effect of Al on the performance of Dual Phase microstructures.
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