Tool-wear analysis in cryogenic machining of NiTi shape memory alloys: A comparison of tool-wear performance with dry and MQL machining

Y. Kaynak, H. E. Karaca, R. D. Noebe, I. S. Jawahir

Research output: Contribution to journalArticlepeer-review

159 Scopus citations

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 languageEnglish
Pages (from-to)51-63
Number of pages13
JournalWear
Volume306
Issue number1-2
DOIs
StatePublished - 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.

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

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