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Sheet Metal Testing and Flow Curve Determination under Multiaxial Conditions
Author(s) -
Dziallach S.,
Bleck W.,
Blumbach M.,
Hallfeldt T.
Publication year - 2007
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200700129
Subject(s) - formability , materials science , ultimate tensile strength , tensile testing , sheet metal , flow stress , composite material , flow (mathematics) , metallurgy , plasticity , predictability , mechanics , strain rate , mathematics , statistics , physics
This study comprises the testing of three auto body steels with regard to formability, tensile strength and forming limits under various stress states. Two multiphase steels (DP600, TRIP700) and one ferritic interstitial free (DX54, 1.0306) were characterised. A further main focus of this study is the comparison of experimentally determined flow curves in the bulge test with extrapolated tensile test flow curves. This comparison gives an insight into the predictability and accuracy of extrapolated curve progressions to higher strain ranges.