Ingenieurwissenschaften und zugeordnete Tätigkeiten
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Erscheinungsjahr
- 2012 (2) (entfernen)
Dokumenttyp
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- Englisch (2)
Schlagworte
- 100Cr6 (1)
- ASP20212 (1)
- Alloy (1)
- Automotive (1)
- BIMAX42 (1)
- Biolubricants (1)
- CSS-42L (1)
- Contact pressure (1)
- Friction (1)
- Passenger car motor oils (PCMO) (1)
Downsizing (power-to-weight ratio) and higher speeds lead to a rise in Hertzian contact pressures in combination with an increase in surface or oil temperatures. Under such conditions, commonly used bearing steels, such as 100Cr6, reach their limits, creating a demand for alternative slip-rolling resistant steel alloys. The present work therefore compares the slip-rolling performance of various steel types with Maraging- and PM-type steel alloys such as e.g. CSS-42L™, ASP2012, BIMAX42+, in the Hertzian contact pressure range up to P0max of 4 GPa. Through-hardened 100Cr6H (AISI 52100), case-hardened 20MnCr5 (AISI 5120H) and nitrogen alloyed Croni-dur30 (AMS 5898) still compete in terms of slip-rolling and wear resistance and load carrying capacity, whereas Maraging- and PM-type steel alloys offer superior strength and toughness properties.