Surface integrity characteristics of NiTi shape memory alloys resulting from dry and cryogenic machining

Research output: Contribution to journalConference articlepeer-review

24 Scopus citations

Abstract

NiTi alloys are extensively used in many industries due to their unique properties such as super elasticity, shape memory and phase transformation. Since the NiTi alloys have temperature-dependent mechanical and material properties, this work focuses on the effects of dry and cryogenic machining processes on surface integrity characteristics of NiTi alloys. Surface quality and topography, microstructure, transformation response and phase transformation temperatures of machined specimens are measured to assess the machining-induced surface integrity characteristics of NiTi alloys. Obtained results illustrate that machining of NiTi alloys under different cutting and cooling conditions affects their resulting surface integrity characteristics. Moreover, as compared to dry machining, cryogenic machining helps to improve surface quality and has substantial effects on the phase transformation behavior of machined specimens.

Original languageEnglish
Pages (from-to)393-398
Number of pages6
JournalProcedia CIRP
Volume13
DOIs
StatePublished - 2014
Event2nd CIRP Conference on Surface Integrity, CSI 2014 - Nottingham, United Kingdom
Duration: May 28 2014May 30 2014

Bibliographical note

Funding Information:
Authors gratefully acknowledge the support from the NASA FAP Aeronautical Sciences Project and the NASA EPSCOR Program under Grant No NNX11AQ31A. Dr. Yusuf Kaynak also acknowledges the support from Scientific Research Project Program of Marmara University under grant No FEN-D-090414-0109.

Keywords

  • Cryogenic machining
  • NiTi shape memory alloys
  • Phase transformation
  • Surface integrity

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

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