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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 28
SUMMARY:Cold forming of metastable Cr-Ni-Cu cast steel
DESCRIPTION:Resource conservation and energy savings in component manufacture play a paramount role in the development of novel materials. Under this premise, the development of metastable austenitic steels with TRIP/TWIP properties is being strongly promoted. The results obtained on cast Cr-Mn-Ni steels in particular stand out here. Despite their heterogeneous and coarsely dendritic cast structure, these alloys are characterized by excellent cold formability comparable with wrought alloys. This is due to forming-induced plasticity effects and dislocation sliding.
In order to exploit the full potential of these materials for forming technology, a technology is being developed at Fraunhofer IWU Chemnitz that makes it possible to shape cast semi-finished products into the desired form without any hot forming.
The aim of the material-adapted forming processes is a high-strength and simultaneously tough edge zone as well as a tough core in the component. In this way, structural elements that can withstand high cyclic loads can be produced, which bring with them a high material-specific safety factor. As a result of the TRIP effect, potential crack propagation is counteracted.
In addition to the targeted property design in the component, the energy-economical aspects should also be emphasized here. The use of cast semi-finished products shortens the process chain enormously. Otherwise usual heating and heat treatment steps are omitted, making it possible to achieve annual energy savings of ~1.5GJ per ton of manufactured components.
Compared with the conventional process for producing solid formed parts from austenitic steel, the process chain to be developed represents a novel, energy- and resource-efficient process whose enormous potential for solid forming has not yet been exploited.



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DTSTART:20230615T113000
DTEND:20230615T115000
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