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Abstract
The overall effort of the automotive industry to produce lightweight parts has led to a stronger focus on the development of high-strength and ultra-high-strength steels. The susceptibility of such steels to hydrogen embrittlement is often underestimated due to the delay of the damage, which can occur suddenly after a few weeks or even months. The purpose of this work is to investigate the influence of different tempering temperatures on the delayed fracture susceptibility of ultra-high-strength quenched steel. In order to test the hydrogen embrittlement, a device was built in which the notched samples were exposed to constant bending stress with a constant dropping of hydrochloric acid (HCl) and a 0.1 N concentration in the notch. The results demonstrate that tempering at elevated temperatures leads to a lower susceptibility to hydrogen embrittlement. The results of this paper lay the groundwork for the further development of advanced ultra-high-strength steels with an increased resistance to delayed fracture. The application of ultra-high-strength fasteners demonstrates great potential for a new generation of engines with reduced CO2 emissions.
Originalsprache | englisch |
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Seiten (von - bis) | 66-73 |
Fachzeitschrift | Materials Science and Engineering A |
Jahrgang | 590 |
DOIs | |
Publikationsstatus | Veröffentlicht - 2014 |
Fields of Expertise
- Advanced Materials Science
Treatment code (Nähere Zuordnung)
- Application
- Experimental
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Untersuchen Sie die Forschungsthemen von „Investigations into the delayed fracture susceptibility of 34CrNiMo6 steel, and the opportunities for its application in ultra-high-strength bolts and fasteners“. Zusammen bilden sie einen einzigartigen Fingerprint.-
Materials Development
Dikovits, M., Sommitsch, C., Caliskanoglu, O., Schlacher, C., Beal, C., Djuric, D., Vujic, S., Pein, C., Krumphals, F., Kuduzovic, A. & Halici, D.
1/03/09 → …
Projekt: Arbeitsgebiet
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CD-Labor für Werkstoffmodellierung und Simulation, Modul 6: Entwicklung von ultrahochfesten Stählen für Schrauben und Verbindungselemente in der Automobilindustrie
Kuduzovic, A.
1/01/10 → 31/01/13
Projekt: Forschungsprojekt