Effect of laser power on the microstructural behaviour and strength of modified laser deposited Ti6Al4V+Cu alloy for medical application

Mutiu F. Erinosho; Esther T. Akinlabi

doi:10.1117/12.2214989

Effect of laser power on the microstructural behaviour and strength of modified laser deposited Ti₆Al₄V+Cu alloy for medical application

Mutiu F. Erinosho, Esther T. Akinlabi

Mechanical Engineering Science

University of Johannesburg

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

The excellent biocompatibility property of Grade 5 titanium alloy has made its desirability largely increasing in the field of biomedical. The titanium alloy (Ti6Al4V) was modified with the addition of 3 weight percent (wt %) copper via a laser deposition process using the Ytterbium fiber laser with a wavelength of 1.047 μm. Therefore, this paper presents the effect of laser power on the microstructural behaviour and strength of the modified Ti6Al4V+Cu alloy. The laser powers were varied between 600 W and 1600 W respectively while all other parameters such as the scanning speed, powder flow rates and gas flow rates were kept constant. The melt pool and width of the deposited alloy increases as the laser power was increased. The α-lamella was observed to be finer at low laser power, and towards the fusion zone, Widmanstettan structures were fused and become smaller; and showing an evidence of α-martensite phases. The strength of the modified alloy was derived from the hardness values. The strength was observed to increase initially to a point as the laser power increases and afterwards decreased as the laser power was further increased. The improved Ti6Al4V+Cu alloy can be anticipated for biomedical application.

Original language	English
Title of host publication	High Energy/Average Power Lasers and Intense Beam Applications IX
Editors	Steven J. Davis, Michael C. Heaven, J. Thomas Schriempf
Publisher	SPIE
ISBN (Electronic)	9781628419641
DOIs	https://doi.org/10.1117/12.2214989
Publication status	Published - 2016
Event	High Energy/Average Power Lasers and Intense Beam Applications IX - San Francisco, United States Duration: 15 Feb 2016 → 16 Feb 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9729
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	High Energy/Average Power Lasers and Intense Beam Applications IX
Country/Territory	United States
City	San Francisco
Period	15/02/16 → 16/02/16

Keywords

Laser metal deposition
Ti6Al4V+Cu alloy
microhardness
microstructure
strength

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2214989

Cite this

Erinosho, M. F., & Akinlabi, E. T. (2016). Effect of laser power on the microstructural behaviour and strength of modified laser deposited Ti₆Al₄V+Cu alloy for medical application. In S. J. Davis, M. C. Heaven, & J. T. Schriempf (Eds.), High Energy/Average Power Lasers and Intense Beam Applications IX Article 97290J (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9729). SPIE. https://doi.org/10.1117/12.2214989

Erinosho, Mutiu F. ; Akinlabi, Esther T. / Effect of laser power on the microstructural behaviour and strength of modified laser deposited Ti₆Al₄V+Cu alloy for medical application. High Energy/Average Power Lasers and Intense Beam Applications IX. editor / Steven J. Davis ; Michael C. Heaven ; J. Thomas Schriempf. SPIE, 2016. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Effect of laser power on the microstructural behaviour and strength of modified laser deposited Ti6Al4V+Cu alloy for medical application",

abstract = "The excellent biocompatibility property of Grade 5 titanium alloy has made its desirability largely increasing in the field of biomedical. The titanium alloy (Ti6Al4V) was modified with the addition of 3 weight percent (wt %) copper via a laser deposition process using the Ytterbium fiber laser with a wavelength of 1.047 μm. Therefore, this paper presents the effect of laser power on the microstructural behaviour and strength of the modified Ti6Al4V+Cu alloy. The laser powers were varied between 600 W and 1600 W respectively while all other parameters such as the scanning speed, powder flow rates and gas flow rates were kept constant. The melt pool and width of the deposited alloy increases as the laser power was increased. The α-lamella was observed to be finer at low laser power, and towards the fusion zone, Widmanstettan structures were fused and become smaller; and showing an evidence of α-martensite phases. The strength of the modified alloy was derived from the hardness values. The strength was observed to increase initially to a point as the laser power increases and afterwards decreased as the laser power was further increased. The improved Ti6Al4V+Cu alloy can be anticipated for biomedical application.",

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Erinosho, MF & Akinlabi, ET 2016, Effect of laser power on the microstructural behaviour and strength of modified laser deposited Ti₆Al₄V+Cu alloy for medical application. in SJ Davis, MC Heaven & JT Schriempf (eds), High Energy/Average Power Lasers and Intense Beam Applications IX., 97290J, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9729, SPIE, High Energy/Average Power Lasers and Intense Beam Applications IX, San Francisco, United States, 15/02/16. https://doi.org/10.1117/12.2214989

Effect of laser power on the microstructural behaviour and strength of modified laser deposited Ti₆Al₄V+Cu alloy for medical application. / Erinosho, Mutiu F.; Akinlabi, Esther T.
High Energy/Average Power Lasers and Intense Beam Applications IX. ed. / Steven J. Davis; Michael C. Heaven; J. Thomas Schriempf. SPIE, 2016. 97290J (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9729).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - The excellent biocompatibility property of Grade 5 titanium alloy has made its desirability largely increasing in the field of biomedical. The titanium alloy (Ti6Al4V) was modified with the addition of 3 weight percent (wt %) copper via a laser deposition process using the Ytterbium fiber laser with a wavelength of 1.047 μm. Therefore, this paper presents the effect of laser power on the microstructural behaviour and strength of the modified Ti6Al4V+Cu alloy. The laser powers were varied between 600 W and 1600 W respectively while all other parameters such as the scanning speed, powder flow rates and gas flow rates were kept constant. The melt pool and width of the deposited alloy increases as the laser power was increased. The α-lamella was observed to be finer at low laser power, and towards the fusion zone, Widmanstettan structures were fused and become smaller; and showing an evidence of α-martensite phases. The strength of the modified alloy was derived from the hardness values. The strength was observed to increase initially to a point as the laser power increases and afterwards decreased as the laser power was further increased. The improved Ti6Al4V+Cu alloy can be anticipated for biomedical application.

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Erinosho MF, Akinlabi ET. Effect of laser power on the microstructural behaviour and strength of modified laser deposited Ti₆Al₄V+Cu alloy for medical application. In Davis SJ, Heaven MC, Schriempf JT, editors, High Energy/Average Power Lasers and Intense Beam Applications IX. SPIE. 2016. 97290J. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2214989