Browse Publications Technical Papers 2010-01-0438

Mechanical Properties and Crash Worthiness of Ultrafine Grained Multi-Phase Steel Sheets for Automotive Body Applications 2010-01-0438

Mechanical properties, formability and crash worthiness of a new sheet steel having an ultrafine grained (UFG) multi-phase (MP) microstructure are shown. The fabricated UFG-MP steel showed significant work hardening caused by deformation induced martensitic transformation of retained austenite, which resulted in a combination of high strength and large tensile elongation. It was confirmed by dynamic collapse test and FEM simulation that the large work hardenability of the UFG-MP steel promoted compact mode collapse that improved the absorbed energy.


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