Journal
3RD CIRP CONFERENCE ON SURFACE INTEGRITY
Volume 45, Issue -, Pages 63-66Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.procir.2016.02.362
Keywords
Cryogenic machining; Microhardness; Surface integrity
Categories
Funding
- National Science Foundation
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1405129] Funding Source: National Science Foundation
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Ti-6Al-7Nb alloy is emerging as an alternative biomedical material for replacing Ti-6Al-4V 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 alpha-phase. (C) 2016 The Authors. Published by Elsevier B.V.
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