Fatigue properties of powder metallurgy parts are affected mainly by the porosity fraction. Even though it has inferior mechanical and physical properties over the conventional materials, the application of powder metallurgy products in automotive fields is seen in recent trends. The rolling-sliding contact fatigue behavior of sintered and hardened steels has been investigated by performing experiments that represent practical sliding friction coefficient component prevailing in the medium- and heavy-duty bearings and gears. Introduction of sliding friction coefficient changes the typical failure pattern and wear rate of sintered and hardened steels. The sliding friction has been computed from available models and compared with the experimental data. The ratcheting strain has also been predicted for sintered and hardened steels for various contact pressures and sliding friction coefficients. The maximum value of this strain is responsible for surface crack initiation. The wear particle analysis is carried out for the sintered and hardened steels under rolling-sliding contact fatigue conditions. The ferrogram slides for pore free steel under the rolling-sliding contact fatigue conditions are also prepared to study the effect of porosity in wear mechanism. The characteristics of wear morphology and the size, shape, and concentration of worn particles for sintered and hardened steels are also analyzed for various rolling-sliding contact fatigue conditions.
Skip Nav Destination
e-mail: nggovind@yahoo.com
Article navigation
October 2008
Research Papers
Computation of Sliding Friction and Ratcheting Strain of Sintered and Hardened Steels Under Contact Fatigue Conditions
N. Govindarajan,
N. Govindarajan
Research Engineer
No. 3, Flat-B, Raj Enclave,
e-mail: nggovind@yahoo.com
Balaji Colony
, IV Cross Street, Velachery, Chennai 42, Tamil Nadu, India
Search for other works by this author on:
R. Gnanamoorthy
R. Gnanamoorthy
Dr. Eng. Professor
Search for other works by this author on:
N. Govindarajan
Research Engineer
No. 3, Flat-B, Raj Enclave,
Balaji Colony
, IV Cross Street, Velachery, Chennai 42, Tamil Nadu, Indiae-mail: nggovind@yahoo.com
R. Gnanamoorthy
Dr. Eng. Professor
J. Tribol. Oct 2008, 130(4): 041602 (10 pages)
Published Online: August 6, 2008
Article history
Received:
December 25, 2007
Revised:
May 11, 2008
Published:
August 6, 2008
Citation
Govindarajan, N., and Gnanamoorthy, R. (August 6, 2008). "Computation of Sliding Friction and Ratcheting Strain of Sintered and Hardened Steels Under Contact Fatigue Conditions." ASME. J. Tribol. October 2008; 130(4): 041602. https://doi.org/10.1115/1.2959107
Download citation file:
Get Email Alerts
Cited By
Related Articles
Fatigue Damage Behavior of a Structural Component Made of P355NL1 Steel Under Block Loading
J. Pressure Vessel Technol (April,2009)
Study of the Size Effects and Friction Conditions in Microextrusion—Part II: Size Effect in Dynamic Friction for Brass-Steel Pairs
J. Manuf. Sci. Eng (August,2007)
Dynamic Friction Measurements at Sliding Velocities Representative of High-Speed Machining Processes
J. Tribol (October,2000)
Experimental Characterization of Sliding Friction: Crossing From Deformation to Plowing Contact
J. Tribol (October,2000)
Related Chapters
How the Worm Gear Developed through Time
Design and Application of the Worm Gear
Theoretical Analysis of Sliding Friction Contact between Friction Lining and Wire Rope
International Conference on Mechanical and Electrical Technology 2009 (ICMET 2009)
Surface Analysis and Tools
Tribology of Mechanical Systems: A Guide to Present and Future Technologies