On the role of thermal fluid dynamics into the evolution of porosity during selective laser melting

C. Panwisawas; C. L. Qiu; Y. Sovani; J. W. Brooks; M. M. Attallah; H. C. Basoalto

doi:10.1016/j.scriptamat.2015.04.016

On the role of thermal fluid dynamics into the evolution of porosity during selective laser melting

C. Panwisawas^*, C. L. Qiu, Y. Sovani, J. W. Brooks, M. M. Attallah, H. C. Basoalto

^*Corresponding author for this work

Metallurgy and Materials

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

113 Citations (Scopus)

Abstract

Thermal fluid dynamics and experiments have been used to study the evolution of pores during selective laser melting of Ti-6Al-4V. Scanning electron micrographs show that the morphology of pores changed from near-spherical to elongated shape as the laser scan speed increased. Computational fluid dynamics suggests that this is caused by the change of flow pattern in the melt pool which is dictated by forces such as vapour pressure, gravitational force, capillary and thermal capillary forces exerted on the metallic/gaseous interface.

Original language	English
Pages (from-to)	14-17
Number of pages	4
Journal	Scripta Materialia
Volume	105
Early online date	29 Apr 2015
DOIs	https://doi.org/10.1016/j.scriptamat.2015.04.016
Publication status	Published - Aug 2015

Keywords

Porosity
Selective laser melting
Thermal fluid dynamics
Ti-6Al-4V

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.1016/j.scriptamat.2015.04.016Licence: None: All rights reserved

https://doi.org/10.1016/j.scriptamat.2015.04.016Licence: None: All rights reserved

Structural Metallic Systems For Advanced Gas Turbine Applications
Bowen, P., Chiu, Y. & Reed, R.
Engineering & Physical Science Research Council
1/10/09 → 30/09/14
Project: Research Councils

Cite this

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title = "On the role of thermal fluid dynamics into the evolution of porosity during selective laser melting",

abstract = "Thermal fluid dynamics and experiments have been used to study the evolution of pores during selective laser melting of Ti-6Al-4V. Scanning electron micrographs show that the morphology of pores changed from near-spherical to elongated shape as the laser scan speed increased. Computational fluid dynamics suggests that this is caused by the change of flow pattern in the melt pool which is dictated by forces such as vapour pressure, gravitational force, capillary and thermal capillary forces exerted on the metallic/gaseous interface.",

keywords = "Porosity, Selective laser melting, Thermal fluid dynamics, Ti-6Al-4V",

author = "C. Panwisawas and Qiu, {C. L.} and Y. Sovani and Brooks, {J. W.} and Attallah, {M. M.} and Basoalto, {H. C.}",

year = "2015",

month = aug,

doi = "10.1016/j.scriptamat.2015.04.016",

language = "English",

volume = "105",

pages = "14--17",

journal = "Scripta Materialia",

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AU - Panwisawas, C.

AU - Qiu, C. L.

AU - Sovani, Y.

AU - Brooks, J. W.

AU - Attallah, M. M.

AU - Basoalto, H. C.

PY - 2015/8

Y1 - 2015/8

N2 - Thermal fluid dynamics and experiments have been used to study the evolution of pores during selective laser melting of Ti-6Al-4V. Scanning electron micrographs show that the morphology of pores changed from near-spherical to elongated shape as the laser scan speed increased. Computational fluid dynamics suggests that this is caused by the change of flow pattern in the melt pool which is dictated by forces such as vapour pressure, gravitational force, capillary and thermal capillary forces exerted on the metallic/gaseous interface.

AB - Thermal fluid dynamics and experiments have been used to study the evolution of pores during selective laser melting of Ti-6Al-4V. Scanning electron micrographs show that the morphology of pores changed from near-spherical to elongated shape as the laser scan speed increased. Computational fluid dynamics suggests that this is caused by the change of flow pattern in the melt pool which is dictated by forces such as vapour pressure, gravitational force, capillary and thermal capillary forces exerted on the metallic/gaseous interface.

KW - Porosity

KW - Selective laser melting

KW - Thermal fluid dynamics

KW - Ti-6Al-4V

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DO - 10.1016/j.scriptamat.2015.04.016

M3 - Article

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SN - 1359-6462

VL - 105

SP - 14

EP - 17

JO - Scripta Materialia

JF - Scripta Materialia

ER -

On the role of thermal fluid dynamics into the evolution of porosity during selective laser melting

Abstract

Keywords

ASJC Scopus subject areas

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Projects

Structural Metallic Systems For Advanced Gas Turbine Applications

Cite this