Friction and wear characterization of sintered low alloyed chromium steels for structural components |
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| Authors: | Senad Dizdar Heike Grosser Ulf Engström |
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| Affiliation: | 1. Department of Physics, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand;2. Powder Metallurgy Research and Development Unit (PM_RDU), Thailand National Metal and Materials Technology Center, Pathum Thani 12120, Thailand;1. University of Greenwich, Old Royal Naval College, Park Row, London, SE10 9LS, UK;2. University of Sherbrooke, 2500 Boulevard de l’Université, Sherbrooke, QC J1K 2R1, Canadá;3. CERFACS, 42 avenue Coriolis, Toulouse Cedex, 31057, France;4. ONERA/DMPE, Université de Toulouse, Toulouse, F-31055, France;5. IMFT, Université de Toulouse, UMR 5502 CNRS/INPT-UPS, Allée du professeur Camille Soula, Toulouse, 31400, France |
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| Abstract: | Sintered and sintered/gas nitrided cylinders made of low alloyed chromium steel Astaloy CrL + 0.45 C at 7.25 g/cm3 density, have been tested for scuffing resistance and wear rate in a crossed cylinders test setup lubricated with a commercial SAE 10W40 engine oil at 90 °C. The results show large potential of 1 h gas nitriding of the sintered chromium steel cylinders. The nitrided cylinders experienced safe wear at 1000 MPa and scuffing at 1100 MPa at 2.5 m/s. At 0.5 and 0.1 m/s at least up to 800 MPa the wear was mild, as sintered chromium cylinders showed scuffing at pressure lower than 320 MPa and limited wear at 0.5 and 0.1 m/s. |
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