Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion
A multi-physics simulation model has been established to investigate the influence of Laser powder bed fusion parameters on the spatial composition distribution and grain growth mechanism of the single-track printed dissimilar alloys. Our study shows that alloy composition gradient isosurfaces can b...
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sg-ntu-dr.10356-1715682023-11-04T16:48:14Z Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion Yao, Liming Xiao, Zhongmin Hoo, Zhiongsheng Tang, Chao Qiao, Jing Zhang, Yanmei School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Multi-metal Material Microstructure A multi-physics simulation model has been established to investigate the influence of Laser powder bed fusion parameters on the spatial composition distribution and grain growth mechanism of the single-track printed dissimilar alloys. Our study shows that alloy composition gradient isosurfaces can be used to visualize the spatial distribution of alloy composition for miscible dissimilar alloys. When the melt pool aspect ratio changes from large to small, the grain growth transitions from the temperature gradient mode to composition gradient mode and then to the mixed mode. Our experimental observations show that in extreme cases, the curved grain angle can reach 272°. Agency for Science, Technology and Research (A*STAR) Published version This work was supported by the A*STAR SERC AME Programmatic Fund under Grant A18B1b0061; Singapore Centre for 3D Printing (SC3DP) under Grant [001163-00010]; and State Key Laboratory of Robotics and Systems (HIT) under Grant SKLRS-2023-KF-24. 2023-10-31T02:03:29Z 2023-10-31T02:03:29Z 2023 Journal Article Yao, L., Xiao, Z., Hoo, Z., Tang, C., Qiao, J. & Zhang, Y. (2023). Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion. Materials Research Letters, 11(10), 814-820. https://dx.doi.org/10.1080/21663831.2023.2250826 2166-3831 https://hdl.handle.net/10356/171568 10.1080/21663831.2023.2250826 2-s2.0-85169676484 10 11 814 820 en A18B1b0061 001163-00010 Materials Research Letters © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent. application/pdf |
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Engineering::Mechanical engineering Multi-metal Material Microstructure Yao, Liming Xiao, Zhongmin Hoo, Zhiongsheng Tang, Chao Qiao, Jing Zhang, Yanmei Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion |
| description |
A multi-physics simulation model has been established to investigate the influence of Laser powder bed fusion parameters on the spatial composition distribution and grain growth mechanism of the single-track printed dissimilar alloys. Our study shows that alloy composition gradient isosurfaces can be used to visualize the spatial distribution of alloy composition for miscible dissimilar alloys. When the melt pool aspect ratio changes from large to small, the grain growth transitions from the temperature gradient mode to composition gradient mode and then to the mixed mode. Our experimental observations show that in extreme cases, the curved grain angle can reach 272°. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Yao, Liming Xiao, Zhongmin Hoo, Zhiongsheng Tang, Chao Qiao, Jing Zhang, Yanmei |
| format |
Article |
| author |
Yao, Liming Xiao, Zhongmin Hoo, Zhiongsheng Tang, Chao Qiao, Jing Zhang, Yanmei |
| author_sort |
Yao, Liming |
| title |
Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion |
| title_short |
Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion |
| title_full |
Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion |
| title_fullStr |
Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion |
| title_full_unstemmed |
Mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion |
| title_sort |
mechanism analysis of grain growth dominated by alloy composition gradients during powder bed fusion |
| publishDate |
2023 |
| url |
https://hdl.handle.net/10356/171568 |
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