Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)

Influence of Powder Flow Rate on Properties of Laser Deposited Titanium Alloy -Ti6Al4V

Authors
Rasheedat M. Mahamood, Esther T. Akinlabi
Corresponding Author
Rasheedat M. Mahamood
Available Online April 2017.
DOI
https://doi.org/10.2991/icmmse-17.2017.18How to use a DOI?
Keywords
Additive manufacturing, Laser metal deposition, Microhardness, Microstructure, Powder flow rate
Abstract

Titanium alloy-Ti6Al4V is an important aerospace alloy with excellent properties but it is classified as difficult to machine material that requires an alternative manufacturing process. Laser metal deposition process is an ideal alternative manufacturing process that can offset most of the problem encountered while processing the alloy using the traditional manufacturing method. Processing parameter play an important role in the resulting properties of material processed using the laser metal deposition process. The key processing parameters that have significant influence in the properties of the processed material in laser metal deposition process include laser power, scanning speed, powder flow rate and gas flow rate. In this study, the effect of powder flow rate on the evolving microstructure and microhardness of Ti6Al4V using the laser metal deposition process is investigated. The laser power, scanning speed and powder flow rate were kept constant while the powder flow rate was varied between 1.44 g/min and 7.2 g/min. The results showed that the microhardness increased as the powder flow rate was increased. The microstructure was found to change from coarse Widmanst"tten alpha to coarse martensitic alpha as the powder flow rate was increased. This study is important to know the required powder flow rate to be employed in order to achieve the desired properties during building of new part as well as repair.

Copyright
© 2017, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)
Series
Advances in Engineering Research
Publication Date
April 2017
ISBN
10.2991/icmmse-17.2017.18
ISSN
2352-5401
DOI
https://doi.org/10.2991/icmmse-17.2017.18How to use a DOI?
Copyright
© 2017, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Rasheedat M. Mahamood
AU  - Esther T. Akinlabi
PY  - 2017/04
DA  - 2017/04
TI  - Influence of Powder Flow Rate on Properties of Laser Deposited Titanium Alloy -Ti6Al4V
BT  - Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)
PB  - Atlantis Press
SP  - 109
EP  - 114
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmse-17.2017.18
DO  - https://doi.org/10.2991/icmmse-17.2017.18
ID  - Mahamood2017/04
ER  -