This content is not included in your SAE MOBILUS subscription, or you are not logged in.
DensiForm® Technology for Wrought-Steel-Like Performance of Powder Metal Components
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2006 by SAE International in United States
Annotation ability available
Power transmission components for automotive applications require high static and dynamic mechanical properties to insure long term system reliability. Historically, high quality wrought steel alloys have been the only materials used in the series manufacturing of high torque transmitting components such as one-way clutch races, transmission gears, sprockets and bearing races. Although powder metal technology offers lower cost components, limitations in static and fatigue properties of sintered materials preclude utilization of conventional powder metallurgy in these applications. To address these shortcomings we have developed DensiForm®, a surface densification technology. Specifically, a densification process is utilized with the net result of a full density layer on critical areas up to 1 mm deep into the part and an overall component density above 92% of the theoretical density. The combination of full density on critical areas, high core density and powder metal alloying flexibility enable the production of sintered components which match the performance of wrought steel in highly stressed applications. Contact and bending fatigue properties are presented along with applications to powertrain components.
|Technical Paper||Ultrasonic Measurement of Contact Pressures in Automotive Component Contacts|
|Technical Paper||Development of Pitting Resistant Steel for Transmission Gears|
|Technical Paper||A Novel Concept of Power Transmission Gear Design|
CitationTrasorras, J., Nigarura, S., and Sigl, L., "DensiForm® Technology for Wrought-Steel-Like Performance of Powder Metal Components," SAE Technical Paper 2006-01-0398, 2006, https://doi.org/10.4271/2006-01-0398.
SAE 2006 Transactions Journal of Materials and Manufacturing
Number: V115-5; Published: 2007-03-30
Number: V115-5; Published: 2007-03-30
- Sanderow H. I. Gear Performance Characteristics: Powder Metallurgy versus Cast Iron & Wrought Steel Proceedings of the International Conference on Powder Metallurgy and Particulate Materials 34 43 MPIF Princeton, New Jersey 2005
- German R. M. Liquid Phase Sintering Plenum Press New York 1985
- Kang S. J. L. Kaysser W. A. Petzow G. Yoon D. N. Elimination of Pores During Liquid Phase Sintering of Mo-Ni Powder Met. 27 97 100 1984
- Courtney T. H. Densification and Structural Development in Liquid Phase Sintering Met.Trans. 15A 1065 1074 1984
- German R.M. Rabin B.H. Enhanced Sintering Through Second Phase Additions Powder Met. 28 7 12 1985
- German R. M. Limitations in Net Shaping by Liquid Phase Sintering Advances in Powder Metallurgy 4 Metal Powder Industries Federation Princeton, NJ 1991 183 194
- Timoshenko S.P. Goodier J.N. Theory of Elasticity McGraw-Hill New York 1970
- Nigarura S. Trasorras J.R.L. Rolling Contact Fatigue Properties of DensiForm ® P/M Alloys “Power Transmission Components: Advances in High Performance Powder Metallurgy Applications” Badger W.D. Sanderow H.I. MPIF New Jersey, USA 2001
- Nigarura S. Blanchard P. Trasorras J. R. L. Processing Effects on Rolling Contact Fatigue of Sintered and DensiForm ® Ferrous Alloys Advances in Powder Metallurgy and Particulate Materials MPIF Princeton, New Jersey 2001
- Sigl L.S. Rau G. Krehl M. Properties of Surface Densified P/M Gears SAE Technical Paper Series SP 1950 Proceedings of the 2005 SAE World Congress Detroit MI April 11-14 2005 paper # 711 SAE International Warrendale PA 2005
- Sigl L. S. Rau G. P/M Gear for a Passenger Car Gear Box Proceedings of the International VDI Gear Conference, Munich 2005 VDI-Verlag Düsseldorf 181 196 2005