Improved Surface Integrity from Cryogenic Machining of Ti-6Al-7Nb Alloy for Biomedical Applications

Y. Sun, B. Huang, D. A. Puleo, J. Schoop, I. S. Jawahir

Research output: Contribution to journalConference articlepeer-review

41 Scopus citations


Ti-6Al-7Nb alloy is emerging as an alternative biomedical material for replacing Ti-6Al-4 V alloy used in dental implants and femoral stem prosthesis applications. In cryogenic machining using liquid nitrogen, the surface integrity characteristics of Ti-6Al-7Nb alloy significantly improved compared to dry and flood-cooled machining. This study shows that surface roughness improved in cryogenic machining by 35% and 6.6% respectively, compared with dry and flood-cooled machining. Also, the hardness in the cryogenically-machined surface layer increased, by 33.6% and 14.7%, respectively, compared to dry and flood-cooled machining, with the formation of a severe plastic deformation (SPD) layer with less volume fraction of α-phase.

Original languageEnglish
Pages (from-to)63-66
Number of pages4
JournalProcedia CIRP
StatePublished - 2016
Event3rd CIRP Conference on Surface Integrity, CIRP CSI 2016 - Charlotte, United States
Duration: Jun 8 2016Jun 10 2016

Bibliographical note

Publisher Copyright:
© 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.


  • Cryogenic machining
  • Microhardness
  • Surface integrity

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering


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