Effect of scanning speed and gas flow rate on surface roughness of LMD titanium-alloy

Rasheedat M. Mahamood; Esther T. Akinlabi

Effect of scanning speed and gas flow rate on surface roughness of LMD titanium-alloy

Rasheedat M. Mahamood
, Esther T. Akinlabi

Mechanical Engineering Science

University of Johannesburg

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

1 Citation (Scopus)

Abstract

This study investigated the effect of scanning speed and gas flow rate on surface finish produced during the laser metal deposition process of Ti6A14V, an important aerospace alloy. In this work, Nd-YAG laser was employed with coaxial powder deposition nozzle attached to the end effector of a Kuka robot. The laser power was maintained at 3.0 kW and the powder flow rate at a value 2.88 g/min. The scanning speed was varied between 0.01 and 0.05 m/s and the gas flow rate was varied between 1 and 5 I/min. A total of ten samples were produced and the surface roughness was measured using the average of five measurements from each sample. The microstructure was also studied with optical microscope to relate it to the surface roughness. The results showed that, the average surface finish increased as the scanning speed was increased. Conversely, as the gas flow rate was increased the average surface roughness was reduced. In optimizing the laser metal deposition process, the processing parameters need to be optimized. The results from this study will assist in choosing the right powder flow rate and scanning speed especially in applications such as repair and surface modification.

Original language	English
Title of host publication	WCECS 2016 - World Congress on Engineering and Computer Science 2016
Editors	Warren S. Grundfest, Craig Douglas, S. I. Ao
Publisher	Newswood Limited
Pages	958-962
Number of pages	5
ISBN (Electronic)	9789881404824
Publication status	Published - 2016
Event	2016 World Congress on Engineering and Computer Science, WCECS 2016 - San Francisco, United States Duration: 19 Oct 2016 → 21 Oct 2016

Publication series

Name	Lecture Notes in Engineering and Computer Science
Volume	2226
ISSN (Print)	2078-0958

Conference

Conference	2016 World Congress on Engineering and Computer Science, WCECS 2016
Country/Territory	United States
City	San Francisco
Period	19/10/16 → 21/10/16

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

Additive manufacturing
Laser metal deposition (LMD)
Process parameter
Scanning speed
Surface finish
Titanium alloy

ASJC Scopus subject areas

Computer Science (miscellaneous)

Cite this

@inproceedings{d17d4ed28b1c4032a0a0b6ec3b5ec322,

title = "Effect of scanning speed and gas flow rate on surface roughness of LMD titanium-alloy",

abstract = "This study investigated the effect of scanning speed and gas flow rate on surface finish produced during the laser metal deposition process of Ti6A14V, an important aerospace alloy. In this work, Nd-YAG laser was employed with coaxial powder deposition nozzle attached to the end effector of a Kuka robot. The laser power was maintained at 3.0 kW and the powder flow rate at a value 2.88 g/min. The scanning speed was varied between 0.01 and 0.05 m/s and the gas flow rate was varied between 1 and 5 I/min. A total of ten samples were produced and the surface roughness was measured using the average of five measurements from each sample. The microstructure was also studied with optical microscope to relate it to the surface roughness. The results showed that, the average surface finish increased as the scanning speed was increased. Conversely, as the gas flow rate was increased the average surface roughness was reduced. In optimizing the laser metal deposition process, the processing parameters need to be optimized. The results from this study will assist in choosing the right powder flow rate and scanning speed especially in applications such as repair and surface modification.",

keywords = "Additive manufacturing, Laser metal deposition (LMD), Process parameter, Scanning speed, Surface finish, Titanium alloy",

author = "Mahamood, \{Rasheedat M.\} and Akinlabi, \{Esther T.\}",

year = "2016",

language = "English",

series = "Lecture Notes in Engineering and Computer Science",

publisher = "Newswood Limited",

pages = "958--962",

editor = "Grundfest, \{Warren S.\} and Craig Douglas and Ao, \{S. I.\}",

booktitle = "WCECS 2016 - World Congress on Engineering and Computer Science 2016",

note = "2016 World Congress on Engineering and Computer Science, WCECS 2016 ; Conference date: 19-10-2016 Through 21-10-2016",

}

Mahamood, RM & Akinlabi, ET 2016, Effect of scanning speed and gas flow rate on surface roughness of LMD titanium-alloy. in WS Grundfest, C Douglas & SI Ao (eds), WCECS 2016 - World Congress on Engineering and Computer Science 2016. Lecture Notes in Engineering and Computer Science, vol. 2226, Newswood Limited, pp. 958-962, 2016 World Congress on Engineering and Computer Science, WCECS 2016, San Francisco, United States, 19/10/16.

Effect of scanning speed and gas flow rate on surface roughness of LMD titanium-alloy. / Mahamood, Rasheedat M.; Akinlabi, Esther T.
WCECS 2016 - World Congress on Engineering and Computer Science 2016. ed. / Warren S. Grundfest; Craig Douglas; S. I. Ao. Newswood Limited, 2016. p. 958-962 (Lecture Notes in Engineering and Computer Science; Vol. 2226).

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

TY - GEN

T1 - Effect of scanning speed and gas flow rate on surface roughness of LMD titanium-alloy

AU - Mahamood, Rasheedat M.

AU - Akinlabi, Esther T.

PY - 2016

Y1 - 2016

N2 - This study investigated the effect of scanning speed and gas flow rate on surface finish produced during the laser metal deposition process of Ti6A14V, an important aerospace alloy. In this work, Nd-YAG laser was employed with coaxial powder deposition nozzle attached to the end effector of a Kuka robot. The laser power was maintained at 3.0 kW and the powder flow rate at a value 2.88 g/min. The scanning speed was varied between 0.01 and 0.05 m/s and the gas flow rate was varied between 1 and 5 I/min. A total of ten samples were produced and the surface roughness was measured using the average of five measurements from each sample. The microstructure was also studied with optical microscope to relate it to the surface roughness. The results showed that, the average surface finish increased as the scanning speed was increased. Conversely, as the gas flow rate was increased the average surface roughness was reduced. In optimizing the laser metal deposition process, the processing parameters need to be optimized. The results from this study will assist in choosing the right powder flow rate and scanning speed especially in applications such as repair and surface modification.

AB - This study investigated the effect of scanning speed and gas flow rate on surface finish produced during the laser metal deposition process of Ti6A14V, an important aerospace alloy. In this work, Nd-YAG laser was employed with coaxial powder deposition nozzle attached to the end effector of a Kuka robot. The laser power was maintained at 3.0 kW and the powder flow rate at a value 2.88 g/min. The scanning speed was varied between 0.01 and 0.05 m/s and the gas flow rate was varied between 1 and 5 I/min. A total of ten samples were produced and the surface roughness was measured using the average of five measurements from each sample. The microstructure was also studied with optical microscope to relate it to the surface roughness. The results showed that, the average surface finish increased as the scanning speed was increased. Conversely, as the gas flow rate was increased the average surface roughness was reduced. In optimizing the laser metal deposition process, the processing parameters need to be optimized. The results from this study will assist in choosing the right powder flow rate and scanning speed especially in applications such as repair and surface modification.

KW - Additive manufacturing

KW - Laser metal deposition (LMD)

KW - Process parameter

KW - Scanning speed

KW - Surface finish

KW - Titanium alloy

UR - https://www.scopus.com/pages/publications/85013499611

M3 - Conference contribution

AN - SCOPUS:85013499611

T3 - Lecture Notes in Engineering and Computer Science

SP - 958

EP - 962

BT - WCECS 2016 - World Congress on Engineering and Computer Science 2016

A2 - Grundfest, Warren S.

A2 - Douglas, Craig

A2 - Ao, S. I.

PB - Newswood Limited

T2 - 2016 World Congress on Engineering and Computer Science, WCECS 2016

Y2 - 19 October 2016 through 21 October 2016

ER -

Effect of scanning speed and gas flow rate on surface roughness of LMD titanium-alloy

Abstract

Publication series

Conference

UN SDGs

Keywords

ASJC Scopus subject areas

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Cite this