Laser butt welding of thin ti6al4v sheets: Effects of welding parameters

Peter Omoniyi; Rasheedat Mahamood; Nana Arthur; Sisa Pityana; Samuel Skhosane; Yasuhiro Okamoto; Togo Shinonaga; Martin Maina; Tien Chien Jen; Esther Akinlabi

doi:10.3390/JCS5090246

Laser butt welding of thin ti6al4v sheets: Effects of welding parameters

Peter Omoniyi^*, Rasheedat Mahamood, Nana Arthur, Sisa Pityana, Samuel Skhosane, Yasuhiro Okamoto, Togo Shinonaga, Martin Maina, Tien Chien Jen, Esther Akinlabi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

7 Downloads (Pure)

Abstract

Titanium and its alloys, particularly Ti6Al4V, which is widely utilized in the marine and aerospace industries, have played a vital role in different manufacturing industries. An efficient and cost-effective way of joining this metal is by laser welding. The effect of laser power and welding speed on the tensile, microhardness, and microstructure of Ti6Al4V alloy is investigated in this paper. Results show that the microhardness is highest at the fusion zone and reduces towards the base metal. The microstructure at the fusion zone shows a transformed needle-like lamellar α phase, with a martensitic α’ phase observed within the heat affected zone. Results of tensile tests show an improved tensile strength compared to the base metal.

Original language	English
Article number	246
Number of pages	9
Journal	Journal of Composites Science
Volume	5
Issue number	9
DOIs	https://doi.org/10.3390/JCS5090246
Publication status	Published - 14 Sept 2021
Externally published	Yes

Keywords

Fractography
Laser welding
Microhardness
Microstructure
Ti6Al4V

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Cite this

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title = "Laser butt welding of thin ti6al4v sheets: Effects of welding parameters",

abstract = "Titanium and its alloys, particularly Ti6Al4V, which is widely utilized in the marine and aerospace industries, have played a vital role in different manufacturing industries. An efficient and cost-effective way of joining this metal is by laser welding. The effect of laser power and welding speed on the tensile, microhardness, and microstructure of Ti6Al4V alloy is investigated in this paper. Results show that the microhardness is highest at the fusion zone and reduces towards the base metal. The microstructure at the fusion zone shows a transformed needle-like lamellar α phase, with a martensitic α{\textquoteright} phase observed within the heat affected zone. Results of tensile tests show an improved tensile strength compared to the base metal.",

keywords = "Fractography, Laser welding, Microhardness, Microstructure, Ti6Al4V",

author = "Peter Omoniyi and Rasheedat Mahamood and Nana Arthur and Sisa Pityana and Samuel Skhosane and Yasuhiro Okamoto and Togo Shinonaga and Martin Maina and Jen, {Tien Chien} and Esther Akinlabi",

note = "Funding Information: This research was funded by NATIONAL RESEARCH FOUNDATION (NRF) AND JAPAN SOCIETY FOR THE PROMOTION OF SCIENCE (JSPS).",

year = "2021",

month = sep,

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doi = "10.3390/JCS5090246",

language = "English",

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T1 - Laser butt welding of thin ti6al4v sheets

T2 - Effects of welding parameters

AU - Omoniyi, Peter

AU - Mahamood, Rasheedat

AU - Arthur, Nana

AU - Pityana, Sisa

AU - Skhosane, Samuel

AU - Okamoto, Yasuhiro

AU - Shinonaga, Togo

AU - Maina, Martin

AU - Jen, Tien Chien

AU - Akinlabi, Esther

N1 - Funding Information: This research was funded by NATIONAL RESEARCH FOUNDATION (NRF) AND JAPAN SOCIETY FOR THE PROMOTION OF SCIENCE (JSPS).

PY - 2021/9/14

Y1 - 2021/9/14

N2 - Titanium and its alloys, particularly Ti6Al4V, which is widely utilized in the marine and aerospace industries, have played a vital role in different manufacturing industries. An efficient and cost-effective way of joining this metal is by laser welding. The effect of laser power and welding speed on the tensile, microhardness, and microstructure of Ti6Al4V alloy is investigated in this paper. Results show that the microhardness is highest at the fusion zone and reduces towards the base metal. The microstructure at the fusion zone shows a transformed needle-like lamellar α phase, with a martensitic α’ phase observed within the heat affected zone. Results of tensile tests show an improved tensile strength compared to the base metal.

AB - Titanium and its alloys, particularly Ti6Al4V, which is widely utilized in the marine and aerospace industries, have played a vital role in different manufacturing industries. An efficient and cost-effective way of joining this metal is by laser welding. The effect of laser power and welding speed on the tensile, microhardness, and microstructure of Ti6Al4V alloy is investigated in this paper. Results show that the microhardness is highest at the fusion zone and reduces towards the base metal. The microstructure at the fusion zone shows a transformed needle-like lamellar α phase, with a martensitic α’ phase observed within the heat affected zone. Results of tensile tests show an improved tensile strength compared to the base metal.

KW - Fractography

KW - Laser welding

KW - Microhardness

KW - Microstructure

KW - Ti6Al4V

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DO - 10.3390/JCS5090246

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VL - 5

JO - Journal of Composites Science

JF - Journal of Composites Science

IS - 9

M1 - 246

ER -

Laser butt welding of thin ti6al4v sheets: Effects of welding parameters

Abstract

Keywords

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