|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||I-34: Hot Blank – Cold Die (HB-CD) Stamping of Magnesium Alloy Sheets _ Material Characterization and Modeling
||Fadi Abu-Farha, Abdelrahim Lhal, Zeren Xu, Nan Zhang
|On-Site Speaker (Planned)
Hot blank – cold die (HB-CD) stamping offers great opportunities for high production rate and low cost forming, while overcoming the limited formability issues with certain lightweight alloy sheets, particularly magnesium, when compared to isothermal warm and hot forming operations. This work investigates the HB-CD stamping potentials of magnesium alloy sheets for automotive applications. Detailed mechanical testing, aided by digital image correlation (DIC), was carried out over a wide range of temperatures and strain rates to fully characterize the flow behavior of two magnesium alloys (AZ31B and ZEK100). Microstructural examination was also carried out to correlate the differences in texture and grainstructure to the mechanical behavior of both alloys. Constitutive models, taking the different deformation mechanisms the materials undergo during HB-CD into account, were developed and fitted using the experimental data. A customized hot-stamping simulator setup for controlled non-isothermal tensile testing was developed and used for model calibration.