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    Rights statement: This is the author’s version of a work that was accepted for publication in Journal of Manufacturing Processes. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Manufacturing Processes, 55, 2020 DOI: 10.1016/j.jmapro.2020.04.039

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Generation of graded porous structures by control of process parameters in the selective laser melting of a fixed ratio salt-metal feedstock

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Generation of graded porous structures by control of process parameters in the selective laser melting of a fixed ratio salt-metal feedstock. / Aboulkhair, N.T.; Zhao, G.; Hague, R.J.M.; Kennedy, A.R.; Ashcroft, I.A.; Clare, A.T.

In: Journal of Manufacturing Processes, Vol. 55, 01.07.2020, p. 249-253.

Research output: Contribution to journalJournal articlepeer-review

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APA

Aboulkhair, N. T., Zhao, G., Hague, R. J. M., Kennedy, A. R., Ashcroft, I. A., & Clare, A. T. (2020). Generation of graded porous structures by control of process parameters in the selective laser melting of a fixed ratio salt-metal feedstock. Journal of Manufacturing Processes, 55, 249-253. https://doi.org/10.1016/j.jmapro.2020.04.039

Vancouver

Author

Aboulkhair, N.T. ; Zhao, G. ; Hague, R.J.M. ; Kennedy, A.R. ; Ashcroft, I.A. ; Clare, A.T. / Generation of graded porous structures by control of process parameters in the selective laser melting of a fixed ratio salt-metal feedstock. In: Journal of Manufacturing Processes. 2020 ; Vol. 55. pp. 249-253.

Bibtex

@article{5f8fb281abe34aa89593ae68156ca67c,
title = "Generation of graded porous structures by control of process parameters in the selective laser melting of a fixed ratio salt-metal feedstock",
abstract = "The demonstration of salt dissolution incorporated within laser powder-bed fusion fabrication processes has allowed the creation of complex porous structures without the need for sophisticated design algorithms. This serves to simplify the process, for porous structure creation in powder-bed fabrication techniques, creating a new opportunity for the realisation of optimised structures. A new methodology is presented here in which modulation of the energy density while using a single feedstock material enables three-dimensional control of porosity, ranging from 20 % to 49 %. Through structured experimentation, the response of the material to varying the process parameters in selective laser melting is evaluated and nested structures of distinct densities and morphologies are created. Correlation of the process parameters with modulus and ultimate compressive stress are established. A simple-assembly algorithm was used to generate complex parts consisting of locally assigned porosities having characteristic properties.",
keywords = "Additive manufacturing, Cellular structures, Controlled-porosity, Graded materials, Mechanical performance, Porous, Selective laser melting, Feedstocks, Laser materials processing, Melting, Porosity, Powder metals, Assembly algorithm, Characteristic properties, Dimensional control, Fabrication process, Fabrication technique, Feedstock materials, Nested structures, Process parameters, Process control",
author = "N.T. Aboulkhair and G. Zhao and R.J.M. Hague and A.R. Kennedy and I.A. Ashcroft and A.T. Clare",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Journal of Manufacturing Processes. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Manufacturing Processes, 55, 2020 DOI: 10.1016/j.jmapro.2020.04.039",
year = "2020",
month = jul,
day = "1",
doi = "10.1016/j.jmapro.2020.04.039",
language = "English",
volume = "55",
pages = "249--253",
journal = "Journal of Manufacturing Processes",
issn = "1526-6125",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Generation of graded porous structures by control of process parameters in the selective laser melting of a fixed ratio salt-metal feedstock

AU - Aboulkhair, N.T.

AU - Zhao, G.

AU - Hague, R.J.M.

AU - Kennedy, A.R.

AU - Ashcroft, I.A.

AU - Clare, A.T.

N1 - This is the author’s version of a work that was accepted for publication in Journal of Manufacturing Processes. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Manufacturing Processes, 55, 2020 DOI: 10.1016/j.jmapro.2020.04.039

PY - 2020/7/1

Y1 - 2020/7/1

N2 - The demonstration of salt dissolution incorporated within laser powder-bed fusion fabrication processes has allowed the creation of complex porous structures without the need for sophisticated design algorithms. This serves to simplify the process, for porous structure creation in powder-bed fabrication techniques, creating a new opportunity for the realisation of optimised structures. A new methodology is presented here in which modulation of the energy density while using a single feedstock material enables three-dimensional control of porosity, ranging from 20 % to 49 %. Through structured experimentation, the response of the material to varying the process parameters in selective laser melting is evaluated and nested structures of distinct densities and morphologies are created. Correlation of the process parameters with modulus and ultimate compressive stress are established. A simple-assembly algorithm was used to generate complex parts consisting of locally assigned porosities having characteristic properties.

AB - The demonstration of salt dissolution incorporated within laser powder-bed fusion fabrication processes has allowed the creation of complex porous structures without the need for sophisticated design algorithms. This serves to simplify the process, for porous structure creation in powder-bed fabrication techniques, creating a new opportunity for the realisation of optimised structures. A new methodology is presented here in which modulation of the energy density while using a single feedstock material enables three-dimensional control of porosity, ranging from 20 % to 49 %. Through structured experimentation, the response of the material to varying the process parameters in selective laser melting is evaluated and nested structures of distinct densities and morphologies are created. Correlation of the process parameters with modulus and ultimate compressive stress are established. A simple-assembly algorithm was used to generate complex parts consisting of locally assigned porosities having characteristic properties.

KW - Additive manufacturing

KW - Cellular structures

KW - Controlled-porosity

KW - Graded materials

KW - Mechanical performance

KW - Porous

KW - Selective laser melting

KW - Feedstocks

KW - Laser materials processing

KW - Melting

KW - Porosity

KW - Powder metals

KW - Assembly algorithm

KW - Characteristic properties

KW - Dimensional control

KW - Fabrication process

KW - Fabrication technique

KW - Feedstock materials

KW - Nested structures

KW - Process parameters

KW - Process control

U2 - 10.1016/j.jmapro.2020.04.039

DO - 10.1016/j.jmapro.2020.04.039

M3 - Journal article

VL - 55

SP - 249

EP - 253

JO - Journal of Manufacturing Processes

JF - Journal of Manufacturing Processes

SN - 1526-6125

ER -