Recently, it has been demostrated that large plastic strains imposed on a chip, during machining, results in significant microstructure refinement [1]. Titanium chip obtained by machining is found to have a nanocrystalline structure with ∼100 nm size grains. The hardness and strength of the nanostructures are seen to be substantially higher than those of microcrystalline titanium. In this work, the tribological behavior of this nanocrystalline titanium created by large strain machining is compared with that of conventional pure titanium. Tribological tests on titanium samples have been carried out in a pin-on-disk tribometer, sliding against AISI 52100 steel pins. The wear performance of the nanocrystalline titanium, is shown to be superior than the microcrystalline material. Wear mechanisms are discused from SEM observation of wear tracks, wear debris morphology and transfer tribolayers.
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STLE/ASME 2006 International Joint Tribology Conference
October 23–25, 2006
San Antonio, Texas, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4259-2
PROCEEDINGS PAPER
A Study of the Wear Behavior of Nanocrystalline Titanium Created by Large Strain Machining
P. Iglesias,
P. Iglesias
Universidad Polite´cnica de Cartagena, Cartagena, Spain
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M. D. Bermu´dez,
M. D. Bermu´dez
Universidad Polite´cnica de Cartagena, Cartagena, Spain
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S. Chandrasekar,
S. Chandrasekar
Purdue University, West Lafayette, IN
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B. C. Rao,
B. C. Rao
Purdue University, West Lafayette, IN
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A. E. Jime´nez,
A. E. Jime´nez
Universidad Polite´cnica de Cartagena, Cartagena, Spain
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T. Perdigo´n
T. Perdigo´n
Universidad Polite´cnica de Cartagena, Cartagena, Spain
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P. Iglesias
Universidad Polite´cnica de Cartagena, Cartagena, Spain
M. D. Bermu´dez
Universidad Polite´cnica de Cartagena, Cartagena, Spain
S. Chandrasekar
Purdue University, West Lafayette, IN
B. C. Rao
Purdue University, West Lafayette, IN
A. E. Jime´nez
Universidad Polite´cnica de Cartagena, Cartagena, Spain
T. Perdigo´n
Universidad Polite´cnica de Cartagena, Cartagena, Spain
Paper No:
IJTC2006-12337, pp. 997-998; 2 pages
Published Online:
October 2, 2008
Citation
Iglesias, P, Bermu´dez, MD, Chandrasekar, S, Rao, BC, Jime´nez, AE, & Perdigo´n, T. "A Study of the Wear Behavior of Nanocrystalline Titanium Created by Large Strain Machining." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part B: Magnetic Storage Tribology; Manufacturing/Metalworking Tribology; Nanotribology; Engineered Surfaces; Biotribology; Emerging Technologies; Special Symposia on Contact Mechanics; Special Symposium on Nanotribology. San Antonio, Texas, USA. October 23–25, 2006. pp. 997-998. ASME. https://doi.org/10.1115/IJTC2006-12337
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