Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties
In this work, a novel approach combining liquid deposition with selective laser melting (SLM) is used for fabricating reduced graphene oxide (RGO)/S136 metal matrix composites (MMCs). The grain sizes, crystallographic textures, phase compositions and mechanical properties can be tailored by controll...
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sg-ntu-dr.10356-1068212023-03-04T17:21:37Z Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties Wen, Shifeng Chen, Keyu Li, Wei Zhou, Yan Wei, Qingsong Shi, Yusheng School of Mechanical and Aerospace Engineering S136 steel Engineering::Mechanical engineering Selective Laser Melting In this work, a novel approach combining liquid deposition with selective laser melting (SLM) is used for fabricating reduced graphene oxide (RGO)/S136 metal matrix composites (MMCs). The grain sizes, crystallographic textures, phase compositions and mechanical properties can be tailored by controlling the RGO content in the RGO/S136 MMCs. The results show that the average grain size reaches its smallest size of 0.75 μm when 0.1 wt% RGO was added to the RGO/S136 MMCs. As the RGO content is increased from 0 wt% to 0.5 wt%, a continuous transition of the grains from the (001) orientation to the (101) and (111) orientations is observed. In addition, the cellular dendritic grains transform into equiaxed fine grains with increasing RGO content. The SLM-prepared RGO/S136 MMCs are dominated by high-angle grain boundaries (˃15°) and the martensite (bcc) phase. The hardness, ultimate tensile strength and yield strength of the SLM RGO/S136 MMCs exhibit trends that initially increase and then decrease, with maximum values of 580.6 HV, 535.3 MPa and 515.8 MPa, respectively. This paper highlights the possibility of controlling the RGO content to achieve the desired microstructural characteristics and mechanical properties of RGO/S136 MMCs fabricated by the SLM process. Published version 2019-08-15T02:48:05Z 2019-12-06T22:19:08Z 2019-08-15T02:48:05Z 2019-12-06T22:19:08Z 2019 Journal Article Wen, S., Chen, K., Li, W., Zhou, Y., Wei, Q., & Shi, Y. (2019). Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties. Materials & Design, 175, 107811-. doi;10.1016/j.matdes.2019.107811 0261-3069 https://hdl.handle.net/10356/106821 http://hdl.handle.net/10220/49643 10.1016/j.matdes.2019.107811 en Materials & Design © 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). 11 p. application/pdf |
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S136 steel Engineering::Mechanical engineering Selective Laser Melting Wen, Shifeng Chen, Keyu Li, Wei Zhou, Yan Wei, Qingsong Shi, Yusheng Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties |
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In this work, a novel approach combining liquid deposition with selective laser melting (SLM) is used for fabricating reduced graphene oxide (RGO)/S136 metal matrix composites (MMCs). The grain sizes, crystallographic textures, phase compositions and mechanical properties can be tailored by controlling the RGO content in the RGO/S136 MMCs. The results show that the average grain size reaches its smallest size of 0.75 μm when 0.1 wt% RGO was added to the RGO/S136 MMCs. As the RGO content is increased from 0 wt% to 0.5 wt%, a continuous transition of the grains from the (001) orientation to the (101) and (111) orientations is observed. In addition, the cellular dendritic grains transform into equiaxed fine grains with increasing RGO content. The SLM-prepared RGO/S136 MMCs are dominated by high-angle grain boundaries (˃15°) and the martensite (bcc) phase. The hardness, ultimate tensile strength and yield strength of the SLM RGO/S136 MMCs exhibit trends that initially increase and then decrease, with maximum values of 580.6 HV, 535.3 MPa and 515.8 MPa, respectively. This paper highlights the possibility of controlling the RGO content to achieve the desired microstructural characteristics and mechanical properties of RGO/S136 MMCs fabricated by the SLM process. |
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School of Mechanical and Aerospace Engineering |
author_facet |
School of Mechanical and Aerospace Engineering Wen, Shifeng Chen, Keyu Li, Wei Zhou, Yan Wei, Qingsong Shi, Yusheng |
format |
Article |
author |
Wen, Shifeng Chen, Keyu Li, Wei Zhou, Yan Wei, Qingsong Shi, Yusheng |
author_sort |
Wen, Shifeng |
title |
Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties |
title_short |
Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties |
title_full |
Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties |
title_fullStr |
Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties |
title_full_unstemmed |
Selective laser melting of reduced graphene oxide/S136 metal matrix composites with tailored microstructures and mechanical properties |
title_sort |
selective laser melting of reduced graphene oxide/s136 metal matrix composites with tailored microstructures and mechanical properties |
publishDate |
2019 |
url |
https://hdl.handle.net/10356/106821 http://hdl.handle.net/10220/49643 |
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1759856769478164480 |