Abstract
Extremely high tool-wear rate in machining of NiTi shape memory alloys (SMAs) is one of the major reasons for limiting the use of conventional machining processes on NiTi. The present study begins to address this issue by examining the effects of cryogenic cooling on tool-wear rate and progressive tool-wear by comparing the new findings from cryogenic machining with results obtained from minimum quantity lubrication (MQL) and dry machining conditions. Flank wear at the nose region, notch wear at the depth of cut boundary, and resulting machining performance criteria such as force components and surface quality of machined samples were studied. The findings from this research demonstrate that cryogenic cooling has a profound effect on controlling tool-wear rate and that the progressive tool-wear in machining of NiTi shape memory alloys can be significantly reduced by cryogenic machining.
Original language | English |
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Pages (from-to) | 51-63 |
Number of pages | 13 |
Journal | Wear |
Volume | 306 |
Issue number | 1-2 |
DOIs | |
State | Published - Aug 30 2013 |
Bibliographical note
Funding Information:The authors sincerely thank Mr. Charles Arvin for his help with the machining experiments and discussions with David Brinkman on machining of NiTi . Support from the NASA FAP Aeronautical Sciences Project and the NASA EPSCOR Program under Grant no. NNX11AQ31A is greatly acknowledged.
Funding
The authors sincerely thank Mr. Charles Arvin for his help with the machining experiments and discussions with David Brinkman on machining of NiTi . Support from the NASA FAP Aeronautical Sciences Project and the NASA EPSCOR Program under Grant no. NNX11AQ31A is greatly acknowledged.
Funders | Funder number |
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National Aeronautics and Space Administration |
Keywords
- Cryogenic machining
- MQL
- NiTi shape memory alloys
- Progressive tool-wear
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry