期刊
WEAR
卷 474, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2021.203707
关键词
Steel; Alloy; Slip-rolling; Friction; Wear rate; Contact pressure; 100Cr6; BIMAX42+; CSS-42L; ASP2012
资金
- DFG, Deutsche Forschungsgemeinschaft (German Research Foundation) [WO 521/62, WO 521/9-1, WO 521/92, SPP1551]
This study compares the slip-rolling performance of various steel types under high Hertzian contact pressures, with Maraging- and PM-type steel alloys showing superior strength and toughness properties. Traditional bearing steels still compete in terms of slip-rolling and wear resistance and load carrying capacity.
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-42LTM, 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 Cronidur30 (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.
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