Sliding contact wear damage of EBM built Ti6Al4V: Influence of process induced anisotropic microstructure

Jae Joong Ryu; Sanjay Shrestha; Guha Manogharan; Jai K. Jung

doi:10.3390/met8020131

Sliding contact wear damage of EBM built Ti6Al4V: Influence of process induced anisotropic microstructure

Jae Joong Ryu, Sanjay Shrestha, Guha Manogharan, Jai K. Jung

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Process-induced directional microstructure is identified as one of the key factors of anisotropic mechanical properties. This directional property significantly affects surface contact fatigue and corrosion of electron beam melting (EBM) built biomedical implants. In the current study, material removal on EBM built titanium (Ti6Al4V) subjected to reciprocating motion of commercially pure titanium spherical slider is investigated to identify the influence of the process-induced layered structure and environments on wear damage. Specimens developed by two different build orientations are mechanically stimulated using different sliding directions with nominally elastic normal load in dry, passivating, and synovial environments. It was noticed that EBM orientation significantly changes wear behavior in ambient environment. Wear resistance of mill-annealed Ti6Al4V was improved in passivating environment. Implications to improve useful life of orthopedic implants are discussed.

Original language	English (US)
Article number	131
Journal	Metals
Volume	8
Issue number	2
DOIs	https://doi.org/10.3390/met8020131
State	Published - Feb 13 2018

All Science Journal Classification (ASJC) codes

Materials Science(all)
Metals and Alloys

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10.3390/met8020131

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title = "Sliding contact wear damage of EBM built Ti6Al4V: Influence of process induced anisotropic microstructure",

abstract = "Process-induced directional microstructure is identified as one of the key factors of anisotropic mechanical properties. This directional property significantly affects surface contact fatigue and corrosion of electron beam melting (EBM) built biomedical implants. In the current study, material removal on EBM built titanium (Ti6Al4V) subjected to reciprocating motion of commercially pure titanium spherical slider is investigated to identify the influence of the process-induced layered structure and environments on wear damage. Specimens developed by two different build orientations are mechanically stimulated using different sliding directions with nominally elastic normal load in dry, passivating, and synovial environments. It was noticed that EBM orientation significantly changes wear behavior in ambient environment. Wear resistance of mill-annealed Ti6Al4V was improved in passivating environment. Implications to improve useful life of orthopedic implants are discussed.",

author = "Ryu, {Jae Joong} and Sanjay Shrestha and Guha Manogharan and Jung, {Jai K.}",

note = "Funding Information: The authors gratefully acknowledge many valuable discussions with several colleagues at Industrial Engineering and Materials Science and Engineering, and the financial support of University Research Council at Youngstown State University and Precision Printed Parts Network (P3N) grant from Ohio Economic Development Agency. Funding Information: Acknowledgments: The authors gratefully acknowledge many valuable discussions with several colleagues at Industrial Engineering and Materials Science and Engineering, and the financial support of University Research Council at Youngstown State University and Precision Printed Parts Network (P3N) grant from Ohio Economic Development Agency. Publisher Copyright: {\textcopyright} 2018 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2018",

month = feb,

day = "13",

doi = "10.3390/met8020131",

language = "English (US)",

volume = "8",

journal = "Metals",

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T2 - Influence of process induced anisotropic microstructure

AU - Ryu, Jae Joong

AU - Shrestha, Sanjay

AU - Manogharan, Guha

AU - Jung, Jai K.

N1 - Funding Information: The authors gratefully acknowledge many valuable discussions with several colleagues at Industrial Engineering and Materials Science and Engineering, and the financial support of University Research Council at Youngstown State University and Precision Printed Parts Network (P3N) grant from Ohio Economic Development Agency. Funding Information: Acknowledgments: The authors gratefully acknowledge many valuable discussions with several colleagues at Industrial Engineering and Materials Science and Engineering, and the financial support of University Research Council at Youngstown State University and Precision Printed Parts Network (P3N) grant from Ohio Economic Development Agency. Publisher Copyright: © 2018 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2018/2/13

Y1 - 2018/2/13

N2 - Process-induced directional microstructure is identified as one of the key factors of anisotropic mechanical properties. This directional property significantly affects surface contact fatigue and corrosion of electron beam melting (EBM) built biomedical implants. In the current study, material removal on EBM built titanium (Ti6Al4V) subjected to reciprocating motion of commercially pure titanium spherical slider is investigated to identify the influence of the process-induced layered structure and environments on wear damage. Specimens developed by two different build orientations are mechanically stimulated using different sliding directions with nominally elastic normal load in dry, passivating, and synovial environments. It was noticed that EBM orientation significantly changes wear behavior in ambient environment. Wear resistance of mill-annealed Ti6Al4V was improved in passivating environment. Implications to improve useful life of orthopedic implants are discussed.

AB - Process-induced directional microstructure is identified as one of the key factors of anisotropic mechanical properties. This directional property significantly affects surface contact fatigue and corrosion of electron beam melting (EBM) built biomedical implants. In the current study, material removal on EBM built titanium (Ti6Al4V) subjected to reciprocating motion of commercially pure titanium spherical slider is investigated to identify the influence of the process-induced layered structure and environments on wear damage. Specimens developed by two different build orientations are mechanically stimulated using different sliding directions with nominally elastic normal load in dry, passivating, and synovial environments. It was noticed that EBM orientation significantly changes wear behavior in ambient environment. Wear resistance of mill-annealed Ti6Al4V was improved in passivating environment. Implications to improve useful life of orthopedic implants are discussed.

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Sliding contact wear damage of EBM built Ti6Al4V: Influence of process induced anisotropic microstructure

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