Effects of Heat Treatments on Steels for Bearing Applications
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AISI 52 100, 440C, REX20, and Crucible CRU80 steel samples were exposed to 16 different heat treatments to vary the levels of retained austenite. Rockwell C hardness measurements, optical microscopy, and compression testing were used to compare the properties of the different steels.
Keywordsadvanced steels bearing applications compression strength heat treatments
The authors thank the National Science Foundation (NSF), Grant No. EEC0353668. Ms. Esther Bolding is the program manager. The authors thank Ms. Maria Guerrero and Mr. Salim Es-Said for their help in the preparation of the manuscript. Drs. Michael O’Brien and Woonsup Park from Aerospace Corporation are gratefully acknowledged for supplying the materials, suggesting the topic, and performing the compression testing.
- 1.General Bearing Corporation. http://www.generalbearing.com/JGBR/specs.htm. West Nyack, New York
- 2.New England Miniature Ball Corporation (NEMB). http://www.nemb.com
- 3.W. Park, M.R. Hilton, and A.R. Leveille, Microstructure, Fatigue Life and Load Capacity of PM Tool Steel Rex20 for Bearing Applications, Lubric. Eng., 1999, 55(6), p 20–30Google Scholar
- 5.Eastern Tool Steel Services Inc. http://www.easterntoolsteel.com/hea_treatment_of_toolsteels.htm. St. Marys, Pennsylvania
- 6.Crucible Service Center: Tool Steel and Specialty Alloy Selector http://www.crucibleservice.com
- 7.B. Hann, P. Kilonsky, D. Smith, and M. Sperber, Wear and Corrosion Resistant PM Tool Steels for Advanced Bearing Applications. Proceedings of the 35th Aerospace Mechanisms Symposium, Ames Research Center, 2001Google Scholar
- 8.Petzowig. Metallographic Etching, Berlin-Stuttgart, American Society for Metals, 1978, p 61–68Google Scholar
- 9.ASTM Designation: E 9-89a (Reapproved 1995). Standard Test Methods of Compression Testing of Metallic Materials at Room Temperature, 1995, p 99–106Google Scholar
- 10.Erhart H., Grabke J. (1981) Equilibrium Segregation of phosphorous at grain boundaries of Fe-P, Fe-C-P, Fe-Cr-P, and Fe-Cr-C-P alloys. Met. Sci. 5:401–408Google Scholar