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Content archived on 2022-11-21

The effect of toughness on the failure of high and very high strength structural steels in the elasto-plastic and fully plastic range

Objective

As part of the two research projects at the Institut für Eisenhüttenkunde at the RWTH Aachen in recent years, investigations have been carried out on the forming and fracture behaviour of large tensile specimens. The investigations showed that in conjunction with other transition temperature concepts the brittle fracture of large tensile stress specimens can more or less be prevented. The failure behaviour in the elastic-plastic (Ti < T < Ta) and in the fully plastic (T > Ta) areas were only able to be described in a limited way. The new research project is aimed in particular at making a detailed examination of failure behaviour between Ti and Ta. In addition the effect of the rigidity of the specimens and the rate of elongation (exemplary) on failure behaviour in this area will be determined. Another aim is to determine what toughness is required when high strength structural steels, such as for example St E 690 or St E 900, are used in order to guarantee the safety of a steel structure under operating conditions.

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Funding Scheme

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Coordinator

Rheinisch-Westfälische Technische Hochschule Aachen (RWTH)
EU contribution
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Address
Kopernikusstraße 16
52056 Aachen
Germany

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Total cost

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