Characterizing the effect of processing parameters on the porosity of laser deposited titanium alloy powder

Rasheedat M. Mahamood, Esther T. Akinlabi, Mukul Shukla, Sisa Pityana

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)

Abstract

Laser Metal Deposition (LMD) is an additive manufacturing technique that produces parts layer by layer directly from the Computer Aided Design (CAD) file. Highly customized parts with complex shapes such as medical implants can well be manufactured using the LMD process. LMD has been used to produce a wide range of patient specific (customized) parts. Porous parts are of particular importance as medical implants because they can potentially aid the healing process and proper integration of the implant with the body tissues. In this research porous samples of titanium alloy (Ti6Al4V) were produced using the LMD process. Spherical shaped Ti6Al4V powder of particle size ranging between 150 to 200 μm was used. The effect of laser power and scanning speed on the shape, size and degree of porosity of the deposited tracks was investigated. The results showed that as the laser power was increased and the scanning speed decreased, the degree of porosity was reduced. The size of the porosity was also found to reduce as the laser power was increased.

Original languageEnglish
JournalLecture Notes in Engineering and Computer Science
Volume2210
Issue numberJanuary
Publication statusPublished - 2014
EventInternational MultiConference of Engineers and Computer Scientists, IMECS 2014 - Kowloon, Hong Kong
Duration: 12 Mar 201414 Mar 2014

Keywords

  • Laser Metal Deposition
  • Medical implants
  • Porosity
  • Processing parameters
  • Titanium alloy

ASJC Scopus subject areas

  • Computer Science (miscellaneous)

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