|About this Abstract
||Materials Science & Technology 2012
||Steel Product Metallurgy and Applications
||Influence of Different Tempering Temperatures on Delayed Fracture Susceptibility of High Strength Quenched Steel
||Asmir Kuduzovic, Robert Kienreich, Christof Sommitsch
|On-Site Speaker (Planned)
The worldwide stricter consumption limits for cars have led to the increased usage of lightweight materials. High strength steels are going to play a major role in future. The susceptibility of such steels with respect to hydrogen embrittlement is often underestimated due to damage, which can occur suddenly after a few weeks or even months. In this work, the influence of different tempering temperatures on the delayed fracture susceptibility of high strength quenched steel has been investigated. During the testing of the susceptibility to hydrogen embrittlement specimens were exposed to constant bending stress with a constant exposure to hydrochloric acid. The results showed that tempering at elevated temperatures lead to lower susceptibility. However, the test series suggest hydrogen embrittlement as predominant fracture mode, indicated by intergranular fracture. The outcomes of this work lay the basis for the further development of steels with increased resistance to delayed fracture.
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