Deformation of AlSi10Mg parts manufactured by Laser Powder Bed Fusion: In-situ measurements incorporating X-ray micro computed tomography and a micro testing stage

Joachim Koelblin; James Hastie; Mehmet Kartal; Amir Siddiq; Moataz M Attallah

doi:10.1016/j.prostr.2021.12.061

Deformation of AlSi10Mg parts manufactured by Laser Powder Bed Fusion: In-situ measurements incorporating X-ray micro computed tomography and a micro testing stage

Joachim Koelblin^* (Corresponding Author), James Hastie, Mehmet Kartal, Amir Siddiq, Moataz M Attallah

^*Corresponding author for this work

University of Birmingham

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

2 Citations (Scopus)

3 Downloads (Pure)

Abstract

The latest advances in optimising the process parameters of laser powder bed fusion (LPBF) result in high densification part. Nonetheless, slight variations of those parameters or the use of recycled powder leads to sub-optimal parts, containing more defects. AlSi10Mg samples were produced by LPBF using recycled powder to study the effect of process-induced defects and their evolution under increased tensile load. This is achieved by employing an in-situ micro testing stage combined with high-resolution X-ray micro computed tomography (XμCT). This combined approach provides three-dimensional (3D) images at multiple load increments. These images are then used to calculate the internal strains between defects in subsequent loading stages and are reported in this work.

Original language	English
Pages (from-to)	168-172
Number of pages	5
Journal	Procedia Structural Integrity
Volume	35
Early online date	8 Jan 2022
DOIs	https://doi.org/10.1016/j.prostr.2021.12.061
Publication status	Published - Jan 2022

Bibliographical note

Acknowledgements
The authors gratefully acknowledge the financial support of the Engineering and Physical Sciences Research Council (EPSRC) under grant reference EP/R021694/1, “3D in-situ based methodology for optimizing the mechanical performance of selective laser melted aluminium alloys”.

Keywords

Laser powder bed fusion
Selective laser melting
Tensile testing
Internal porosity
in-situ X-ray computed tomography
Digital image correlation

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Deformation of AlSi10Mg parts manufactured by Laser Powder Bed Fusion: In-situ measurements incorporating X-ray micro computed tomography and a micro testing stage. / Koelblin, Joachim (Corresponding Author); Hastie, James; Kartal, Mehmet et al.
In: Procedia Structural Integrity, Vol. 35, 01.2022, p. 168-172.

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

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title = "Deformation of AlSi10Mg parts manufactured by Laser Powder Bed Fusion: In-situ measurements incorporating X-ray micro computed tomography and a micro testing stage",

abstract = "The latest advances in optimising the process parameters of laser powder bed fusion (LPBF) result in high densification part. Nonetheless, slight variations of those parameters or the use of recycled powder leads to sub-optimal parts, containing more defects. AlSi10Mg samples were produced by LPBF using recycled powder to study the effect of process-induced defects and their evolution under increased tensile load. This is achieved by employing an in-situ micro testing stage combined with high-resolution X-ray micro computed tomography (XμCT). This combined approach provides three-dimensional (3D) images at multiple load increments. These images are then used to calculate the internal strains between defects in subsequent loading stages and are reported in this work.",

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author = "Joachim Koelblin and James Hastie and Mehmet Kartal and Amir Siddiq and Attallah, {Moataz M}",

note = "Acknowledgements The authors gratefully acknowledge the financial support of the Engineering and Physical Sciences Research Council (EPSRC) under grant reference EP/R021694/1, “3D in-situ based methodology for optimizing the mechanical performance of selective laser melted aluminium alloys”.",

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AB - The latest advances in optimising the process parameters of laser powder bed fusion (LPBF) result in high densification part. Nonetheless, slight variations of those parameters or the use of recycled powder leads to sub-optimal parts, containing more defects. AlSi10Mg samples were produced by LPBF using recycled powder to study the effect of process-induced defects and their evolution under increased tensile load. This is achieved by employing an in-situ micro testing stage combined with high-resolution X-ray micro computed tomography (XμCT). This combined approach provides three-dimensional (3D) images at multiple load increments. These images are then used to calculate the internal strains between defects in subsequent loading stages and are reported in this work.

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KW - Selective laser melting

KW - Tensile testing

KW - Internal porosity

KW - in-situ X-ray computed tomography

KW - Digital image correlation

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ER -

Deformation of AlSi10Mg parts manufactured by Laser Powder Bed Fusion: In-situ measurements incorporating X-ray micro computed tomography and a micro testing stage

Abstract

Bibliographical note

Keywords

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