Fatigue behavior and wear resistance of sinter-hardening steels

Autor(en)

Magdalena Dlapka, Herbert Danninger, Christian Gierl, Edgar Klammer, Brigitte Weiss, Golta Khatibi, Agnieszka Betzwar-Kotas

Abstrakt

Sinter hardening is a method of continuously increasing industrial relevance due to the fact that it is an energy- and cost-saving way of producing high-performance powder metallurgy (PM) parts for applications requiring high fatigue performance and wear resistance. In the present study sinter-hardening grade steels alloyed with chromium/molybdenum and molybdenum/nickel were evaluated in relation to fatigue and wear after sinter hardening at different temperatures. Fatiigue tests were performed using an ultrasonic-resonance fatigue facility with 20 kHz frequency capacity, which enables rapid testing of up to 10(9) cycles in 15 h. Beside the time benefit, this testing method is highly sensitive to singular defects. Therefore, it is an invaluable tool for investigating and revealing the critical defects responsible for failure. The wear behavior was determined in a dry-sliding mode and trends in wear and fatigue performance compared. For different alloy conditions similar trends are found in fatigue and wear testing.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Miba Sinter Austria GmbH, Technische Universität Wien

Journal

International Journal of Powder Metallurgy

Band

48

Seiten

49-60

Anzahl der Seiten

12

ISSN

0888-7462

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

210006 Nanotechnologie, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/37273135-4d08-4af3-ba29-2d91ef711a5a