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

doi:10.1016/j.procir.2016.02.362

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 journal › Conference article › peer-review

46 Scopus citations

Abstract

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 language	English
Pages (from-to)	63-66
Number of pages	4
Journal	Procedia CIRP
Volume	45
DOIs	https://doi.org/10.1016/j.procir.2016.02.362
State	Published - 2016
Event	3rd CIRP Conference on Surface Integrity, CIRP CSI 2016 - Charlotte, United States Duration: Jun 8 2016 → Jun 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.

Funding

The authors gratefully acknowledge the funding support from National Science Foundation for this research.

Funders	Funder number
National Science Foundation (NSF)

Keywords

Cryogenic machining
Microhardness
Surface integrity

ASJC Scopus subject areas

Control and Systems Engineering
Industrial and Manufacturing Engineering

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10.1016/j.procir.2016.02.362

Cite this

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

abstract = "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.",

keywords = "Cryogenic machining, Microhardness, Surface integrity",

author = "Y. Sun and B. Huang and Puleo, \{D. A.\} and J. Schoop and Jawahir, \{I. S.\}",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.; 3rd CIRP Conference on Surface Integrity, CIRP CSI 2016 ; Conference date: 08-06-2016 Through 10-06-2016",

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doi = "10.1016/j.procir.2016.02.362",

language = "English",

volume = "45",

pages = "63--66",

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T1 - Improved Surface Integrity from Cryogenic Machining of Ti-6Al-7Nb Alloy for Biomedical Applications

AU - Sun, Y.

AU - Huang, B.

AU - Puleo, D. A.

AU - Schoop, J.

AU - Jawahir, I. S.

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Cryogenic machining

KW - Microhardness

KW - Surface integrity

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

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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