Low Temperature Sheet Forming

authored by

Kathrin Voges-Schwieger, Sven Hübner, Bernd Arno Behrens

Abstract

Metastable austenitic stainless steels change their lattice during forming operations by strain-induced alpha'-martensite formation. Temperatures below T=20°C can accelerate the phase transformation while temperatures above T=60°C may suppress the formation of martensite during the forming operation. In past investigations, the effect of high-strength martensitic regions in an austenitic ductile lattice was used in crash relevant parts for transportation vehicles. The local martensitic regions act as reinforcements leading to an increase in crash energy absorption. Moreover, they control the folding behavior as well as the force-distance-characteristic and increase the buckling resistance. This paper deals with a concerted thermomechanical drawing process to increase the local formation of alpha'-martensite caused by low temperatures.

Organisation(s)

Institute of Metal Forming and Metal Forming Machines

Type

Article

Journal

AIP Conference Proceedings

Volume

1353

Pages

224-228

No. of pages

5

ISSN

0094-243X

Publication date

25.04.2011

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Physics and Astronomy

Electronic version(s)

https://doi.org/10.1063/1.3589519 (Access: Unknown)

 

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