Characterizing the effect of laser power density on microstructure, microhardness, and surface finish of laser deposited titanium alloy

R.M. Mahamood, E.T. Akinlabi, M. Shukla, S. Pityana

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

This paper reports the effect of laser power density on the evolving properties of laser metal deposited titanium alloy. A total of sixteen experiments were performed, and the microstructure, microhardness and surface roughness of the samples were studied using the optical microscope (OP), microhardness indenter and stylus surface analyzer, respectively. The microstructure changed from finer martensitic alpha grain to coarser Widmastätten alpha grain structure as the laser power density was increased. The results show that the higher the laser power density employed, the smoother the obtained surface. The microhardness initially increased as the laser power density was increased and then decreased as the power density was further increased. The result obtained in this study is important for the selection of proper laser power density for the desired microstructure, microhardness and surface finish of part made from Ti6Al4V. Copyright © 2013 by ASME.
Original languageEnglish
JournalJournal of Manufacturing Science and Engineering, Transactions of the ASME
Volume135
Issue number6
DOIs
Publication statusPublished - 2013
Externally publishedYes

Bibliographical note

cited By 10

Keywords

  • Indenters
  • Laser power density
  • Power densities
  • Surface analyzers
  • Surface finishes
  • Ti-6al-4v, Finishing
  • Microstructure
  • Surface roughness
  • Titanium alloys, Microhardness

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