Tribological properties of selective laser melted Al–12Si alloy

The effect of scanning strategy and heat-treatment on the tribological properties of Al–12Si fabricated using selective laser melting (SLM) were evaluated and compared with their cast counterparts (CC). The SLM sample shows a mesostructure and in addition, the microstructure consists of the Al rich...

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Main Authors: Rathod, Hemant J., Nagaraju, T., Prashanth, K. G., Ramamurty, Upadrasta
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/151675
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1516752021-07-01T09:07:45Z Tribological properties of selective laser melted Al–12Si alloy Rathod, Hemant J. Nagaraju, T. Prashanth, K. G. Ramamurty, Upadrasta School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Additive Manufacturing Selective Laser Melting The effect of scanning strategy and heat-treatment on the tribological properties of Al–12Si fabricated using selective laser melting (SLM) were evaluated and compared with their cast counterparts (CC). The SLM sample shows a mesostructure and in addition, the microstructure consists of the Al rich cells surrounded by Si network in the fine cellular structure. Annealing leads to the precipitation of Si and disintegration of the cellular structure, resulting in the reduction of hardness. The as-prepared SLM specimens show the least wear rate compared to heat treated SLM and CC specimens. SLM specimens built with single melt (SM) and checkerboard (CB) scanning strategies have similar hardness, the wear rate of in the former is significantly higher due to high porosity in it. Authors would like to acknowledge the Estonian Research Foundation for their support (Grant Nr. MOBERC15). 2021-07-01T09:07:45Z 2021-07-01T09:07:45Z 2019 Journal Article Rathod, H. J., Nagaraju, T., Prashanth, K. G. & Ramamurty, U. (2019). Tribological properties of selective laser melted Al–12Si alloy. Tribology International, 137, 94-101. https://dx.doi.org/10.1016/j.triboint.2019.04.038 0301-679X https://hdl.handle.net/10356/151675 10.1016/j.triboint.2019.04.038 2-s2.0-85064910850 137 94 101 en Tribology International © 2019 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Additive Manufacturing
Selective Laser Melting
spellingShingle Engineering::Mechanical engineering
Additive Manufacturing
Selective Laser Melting
Rathod, Hemant J.
Nagaraju, T.
Prashanth, K. G.
Ramamurty, Upadrasta
Tribological properties of selective laser melted Al–12Si alloy
description The effect of scanning strategy and heat-treatment on the tribological properties of Al–12Si fabricated using selective laser melting (SLM) were evaluated and compared with their cast counterparts (CC). The SLM sample shows a mesostructure and in addition, the microstructure consists of the Al rich cells surrounded by Si network in the fine cellular structure. Annealing leads to the precipitation of Si and disintegration of the cellular structure, resulting in the reduction of hardness. The as-prepared SLM specimens show the least wear rate compared to heat treated SLM and CC specimens. SLM specimens built with single melt (SM) and checkerboard (CB) scanning strategies have similar hardness, the wear rate of in the former is significantly higher due to high porosity in it.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Rathod, Hemant J.
Nagaraju, T.
Prashanth, K. G.
Ramamurty, Upadrasta
format Article
author Rathod, Hemant J.
Nagaraju, T.
Prashanth, K. G.
Ramamurty, Upadrasta
author_sort Rathod, Hemant J.
title Tribological properties of selective laser melted Al–12Si alloy
title_short Tribological properties of selective laser melted Al–12Si alloy
title_full Tribological properties of selective laser melted Al–12Si alloy
title_fullStr Tribological properties of selective laser melted Al–12Si alloy
title_full_unstemmed Tribological properties of selective laser melted Al–12Si alloy
title_sort tribological properties of selective laser melted al–12si alloy
publishDate 2021
url https://hdl.handle.net/10356/151675
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