Vorträge und Posterpräsentationen (ohne Tagungsband-Eintrag):
H. Danninger, C. Gierl:
"New Alloying Systems for Ferrous Powder Metallurgy Precision Parts";
Hauptvortrag: FITEM '07 - VII Scientific Meeting Physics and Technology of Materials,
Cacak, Serbia (eingeladen);
06.08.2007
- 08.08.2007.
Kurzfassung englisch:
Traditionally, the common alloy elements for sintered steels have been Cu and Ni. With increasing requirements towards mechanical properties, and also as a consequence of soaring prices especially for these two metals, also other alloy elements have become more and more attractive for sintered steels, which make the steels however more tricky to process through PM. Here, the chances and risks of using in particular Cr and Mn alloy steels are discussed, considering the different alloying techniques viable in powder metallurgy, and it is shown that there are specific requirements in particular to the sintering process. The critical importance of chemical reactions between the metal and the atmosphere is described, and it is shown that not only O2 and H2O but also H2 and even N2 can critically affect sintering and microstructural homogenization.
Schlagworte:
Powder metallurgy, sintered steels, alloy steels, sintering
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.