The influence of surface roughness on the fatigue performance of selective laser melted aluminium alloy A357

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

As one of the most typical additive manufacturing (AM) technologies, selective laser melting (SLM) removes many of the shape restrictions that limit materials design, thereby allowing computationally optimised and high performance structures to be directly produced and tested. Due to the high reflectivity and lower absorptivity of Al alloy A357 powder during high temperature laser melting, one of the issues SLM might bring is the surface roughness and defects present on the parts. In this regard, this study investigates the surface roughness - fatigue property relationship for a heat-treated aluminium alloy A357 after SLM. Via the adjustment of SLM parameters, an ultrafine microstructure can be obtained due to the fast solidification rate. Therefore, comparable or even better mechanical properties can be achieved with respect to traditional A357 casting counterparts. Meanwhile, the surface roughness conditions of the SLMed Al alloy are also influenced by various processing parameters, raw powder properties, and sample building methods. For selective laser melted Al alloy A357 specimens, a dense part with a smoother surface would be expected to correspond with a good fatigue performance.
Original languageEnglish
Title of host publicationProceedings of the 16th International Aluminum Alloys Conference (ICAA16) 2018
PublisherCanadian Institute of Mining, Metallurgy and Petroleum
ISBN (Electronic)9781926872414
ISBN (Print)9781926872414
Publication statusPublished - 2018
EventInternational Conference on Aluminium Alloys (ICAA) 2018 - McGill University, Montreal, Canada
Duration: 17 Jun 201821 Jun 2018
Conference number: 16th
https://icaa16.metsoc.org/

Conference

ConferenceInternational Conference on Aluminium Alloys (ICAA) 2018
Abbreviated titleICAA16
CountryCanada
CityMontreal
Period17/06/1821/06/18
Internet address

Keywords

  • Al-Si alloys
  • Microstructure
  • Heat treatment
  • Fatigue properties
  • Selective laser melting

Cite this

Rao, J. H., Zhang, K., Rometsch, P., Huang, A., & Wu, X. (2018). The influence of surface roughness on the fatigue performance of selective laser melted aluminium alloy A357. In Proceedings of the 16th International Aluminum Alloys Conference (ICAA16) 2018 Canadian Institute of Mining, Metallurgy and Petroleum.
Rao, Jeremy Heng ; Zhang, Kai ; Rometsch, Paul ; Huang, Aijun ; Wu, Xinhua. / The influence of surface roughness on the fatigue performance of selective laser melted aluminium alloy A357. Proceedings of the 16th International Aluminum Alloys Conference (ICAA16) 2018. Canadian Institute of Mining, Metallurgy and Petroleum, 2018.
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title = "The influence of surface roughness on the fatigue performance of selective laser melted aluminium alloy A357",
abstract = "As one of the most typical additive manufacturing (AM) technologies, selective laser melting (SLM) removes many of the shape restrictions that limit materials design, thereby allowing computationally optimised and high performance structures to be directly produced and tested. Due to the high reflectivity and lower absorptivity of Al alloy A357 powder during high temperature laser melting, one of the issues SLM might bring is the surface roughness and defects present on the parts. In this regard, this study investigates the surface roughness - fatigue property relationship for a heat-treated aluminium alloy A357 after SLM. Via the adjustment of SLM parameters, an ultrafine microstructure can be obtained due to the fast solidification rate. Therefore, comparable or even better mechanical properties can be achieved with respect to traditional A357 casting counterparts. Meanwhile, the surface roughness conditions of the SLMed Al alloy are also influenced by various processing parameters, raw powder properties, and sample building methods. For selective laser melted Al alloy A357 specimens, a dense part with a smoother surface would be expected to correspond with a good fatigue performance.",
keywords = "Al-Si alloys, Microstructure, Heat treatment, Fatigue properties, Selective laser melting",
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year = "2018",
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booktitle = "Proceedings of the 16th International Aluminum Alloys Conference (ICAA16) 2018",
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Rao, JH, Zhang, K, Rometsch, P, Huang, A & Wu, X 2018, The influence of surface roughness on the fatigue performance of selective laser melted aluminium alloy A357. in Proceedings of the 16th International Aluminum Alloys Conference (ICAA16) 2018. Canadian Institute of Mining, Metallurgy and Petroleum, International Conference on Aluminium Alloys (ICAA) 2018, Montreal, Canada, 17/06/18.

The influence of surface roughness on the fatigue performance of selective laser melted aluminium alloy A357. / Rao, Jeremy Heng; Zhang, Kai; Rometsch, Paul; Huang, Aijun; Wu, Xinhua.

Proceedings of the 16th International Aluminum Alloys Conference (ICAA16) 2018. Canadian Institute of Mining, Metallurgy and Petroleum, 2018.

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

TY - GEN

T1 - The influence of surface roughness on the fatigue performance of selective laser melted aluminium alloy A357

AU - Rao, Jeremy Heng

AU - Zhang, Kai

AU - Rometsch, Paul

AU - Huang, Aijun

AU - Wu, Xinhua

PY - 2018

Y1 - 2018

N2 - As one of the most typical additive manufacturing (AM) technologies, selective laser melting (SLM) removes many of the shape restrictions that limit materials design, thereby allowing computationally optimised and high performance structures to be directly produced and tested. Due to the high reflectivity and lower absorptivity of Al alloy A357 powder during high temperature laser melting, one of the issues SLM might bring is the surface roughness and defects present on the parts. In this regard, this study investigates the surface roughness - fatigue property relationship for a heat-treated aluminium alloy A357 after SLM. Via the adjustment of SLM parameters, an ultrafine microstructure can be obtained due to the fast solidification rate. Therefore, comparable or even better mechanical properties can be achieved with respect to traditional A357 casting counterparts. Meanwhile, the surface roughness conditions of the SLMed Al alloy are also influenced by various processing parameters, raw powder properties, and sample building methods. For selective laser melted Al alloy A357 specimens, a dense part with a smoother surface would be expected to correspond with a good fatigue performance.

AB - As one of the most typical additive manufacturing (AM) technologies, selective laser melting (SLM) removes many of the shape restrictions that limit materials design, thereby allowing computationally optimised and high performance structures to be directly produced and tested. Due to the high reflectivity and lower absorptivity of Al alloy A357 powder during high temperature laser melting, one of the issues SLM might bring is the surface roughness and defects present on the parts. In this regard, this study investigates the surface roughness - fatigue property relationship for a heat-treated aluminium alloy A357 after SLM. Via the adjustment of SLM parameters, an ultrafine microstructure can be obtained due to the fast solidification rate. Therefore, comparable or even better mechanical properties can be achieved with respect to traditional A357 casting counterparts. Meanwhile, the surface roughness conditions of the SLMed Al alloy are also influenced by various processing parameters, raw powder properties, and sample building methods. For selective laser melted Al alloy A357 specimens, a dense part with a smoother surface would be expected to correspond with a good fatigue performance.

KW - Al-Si alloys

KW - Microstructure

KW - Heat treatment

KW - Fatigue properties

KW - Selective laser melting

M3 - Conference Paper

SN - 9781926872414

BT - Proceedings of the 16th International Aluminum Alloys Conference (ICAA16) 2018

PB - Canadian Institute of Mining, Metallurgy and Petroleum

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Rao JH, Zhang K, Rometsch P, Huang A, Wu X. The influence of surface roughness on the fatigue performance of selective laser melted aluminium alloy A357. In Proceedings of the 16th International Aluminum Alloys Conference (ICAA16) 2018. Canadian Institute of Mining, Metallurgy and Petroleum. 2018