Optimierung warmgepreßter Sinterstähle–Mechanische Eigenschaften,Bruchverhalten und Wirtschaftlichkeit

Optimization of Hot Forged Sintered Steels – Mechanical Properties, Fracture Mechanism and Economy . The hot forging technique of powder metal preforms is a new technology for manufacturing structural parts with close tolerances and better surface roughness than conventional forging. A particular significance is gained by the development of high strength materials, whereby the alloying systems and alloying content have to be adjusted in an optimum way. The present work deals with a systematic investigation of static and dynamic properties of H/F steels. By using a new developed alloying technique, the processing of the high oxygen affinity elements, manganese, chromium and vanadium results in H/F steels with minimum oxygen content. It was established that these materials fulfil certain correlations between the individual mechanical properties and the reduction of area. These relations allow to optimize the materials as well as compare them with normal wrought steels. The investigation of fracture mechanism with the help of scanning-electron-microscope gave valuable information of the material behaviour.