2009
DOI: 10.4028/www.scientific.net/kem.410-411.595
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Kathrin Voges-Schwieger, Sven Hübner, Bernd Arno Behrens

Abstract: The nature of phase transformation in metastable austenitic steels due to strain- induced ’-martensite formation is used as new contribution to lightweight construction in crash safety applications. A thermomechanical tool design was developed to enhance the ’-martensite evolution in local areas. Draw and stop beads allow a concerted stretch-out of material by increasing true strain . The local warming of defined regions avoids the phase transformation to retain the original austenitic lattice while a regio…

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