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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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. |
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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 |
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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. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Rathod, Hemant J. Nagaraju, T. Prashanth, K. G. Ramamurty, Upadrasta |
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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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1705151288404082688 |