Formability Enhancement of Al-Mg Sheet by Using Hydro-Mechanical Forming

Yong Nam Kwon; Sang Woo Kim; Young Seon Lee

doi:10.4028/www.scientific.net/KEM.622-623.359

Paper Titles

Study on Hot-Working Behavior of High Carbon Steel / Low Carbon Steel Composite Material Using Processing Map
p.330

Theoretical and Experimental Investigation on Forming Limit for TNW700 Titanium Alloy
p.340

Effects of Nonconstant Strain Rate on Forming Limit and Efficiency in High Pressure Pneumatic Forming of Ti-Alloy Components
p.347

Forming Limit Analyses of 590 MPa High Strength Steel Sheet Using Differential Work Hardening Model
p.353

Formability Enhancement of Al-Mg Sheet by Using Hydro-Mechanical Forming
p.359

Analysis into Differences between the Buckling in Single-Point and Two-Point Incremental Sheet Forming of Components for Self-Supporting Sheet Metal Structures
p.367

Comparative Study for Springback Prediction on Single Point Incremental Forming Process
p.375

Development of Tool Path Correction Algorithm in Incremental Sheet Forming
p.382

Effect of Difference of Tool Rotation Direction on Forming Limit in Friction Stir Incremental Forming
p.390

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Formability Enhancement of Al-Mg Sheet by Using Hydro-Mechanical Forming

Abstract:

Hydro-mechanical forming of Al sheet was investigated in the present study in order to fabricate automotive part having a complicated shape using Al 5052 alloy with a conventional formability which has been known to be quite lower compared to deep drawing steels. We have designed the hydro-mechanical forming in which Al sheet was drawn to a kind of preform step following gas blow forming for final accurate geometry. In order to judge a formability enhancement of Al sheet in terms of forming process, model geometry came from a practical automotive part which had quite depth with complicated curvatures, which was proven that a single sheet forming could not gave a successful part. Experimentally, we succeeded to make the model part with accurate dimension. The optimum forming conditions for respective forming steps were considered most important technical features of this hydro-mechanical. Also, the effort to avoid detrimental microstructure evolutions was given and discussed for a practical application.