3-D printing of a metal material on another dissimilar metal base
Currently, how to achieve quality multi-metal (alloy) material printing is one research hotspot. To achieve strong interface bonding among different materials is the critical issue, considering both the implementation of additive manufacturing and other conventional manufacturing processes. The ther...
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| Format: | Thesis-Master by Coursework |
| Language: | English |
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Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/146897 |
| _version_ | 1811692412543696896 |
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| author | Zhou, Xiaoyue |
| author2 | Xiao Zhongmin |
| author_facet | Xiao Zhongmin Zhou, Xiaoyue |
| author_sort | Zhou, Xiaoyue |
| collection | NTU |
| description | Currently, how to achieve quality multi-metal (alloy) material printing is one research hotspot. To achieve strong interface bonding among different materials is the critical issue, considering both the implementation of additive manufacturing and other conventional manufacturing processes. The thermal incompatibility accompanying the material melting, cooling and solidification phase induces pores, cracks, brittle intermediate phase and other defects of parts fabricated, which degrade the bonding quality. Previous research done to solve these problems is summarized in this dissertation, including improvements in each element and step involved in the printing process such as the powder delivery device and method, the laser categories and its corresponding parameters, and the scanning strategies.
The interface morphology of 3-D printed metallic part is an indicator of the part quality. To quantitatively evaluate the alloy-alloy interface quality, in this dissertation, the results of simulation carried out on CFD post software and actual experiments under the same working conditions are compared. Convective motion on different cross-sections can be observed, which further illustrates the underlying force state at different positions of the melt pool. A set of melt pool simulation schematics give a comprehensive view of 3-D printing of a metal material on a dissimilar metal base. Lastly, specific surface area growth rate is put forward to analyze the melt pool characteristics. The analysis and evaluation of the alloy-alloy interface can be utilized as an indicator to facilitate the reverse design of the metallic part, showing the connection between micro structure and macro behaviors, which provides a new thought to upgrade the 3-D printed metallic parts. |
| first_indexed | 2024-10-01T06:35:23Z |
| format | Thesis-Master by Coursework |
| id | ntu-10356/146897 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:35:23Z |
| publishDate | 2021 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1468972023-03-11T17:39:06Z 3-D printing of a metal material on another dissimilar metal base Zhou, Xiaoyue Xiao Zhongmin School of Mechanical and Aerospace Engineering MZXIAO@ntu.edu.sg Engineering::Aeronautical engineering Engineering::Materials Currently, how to achieve quality multi-metal (alloy) material printing is one research hotspot. To achieve strong interface bonding among different materials is the critical issue, considering both the implementation of additive manufacturing and other conventional manufacturing processes. The thermal incompatibility accompanying the material melting, cooling and solidification phase induces pores, cracks, brittle intermediate phase and other defects of parts fabricated, which degrade the bonding quality. Previous research done to solve these problems is summarized in this dissertation, including improvements in each element and step involved in the printing process such as the powder delivery device and method, the laser categories and its corresponding parameters, and the scanning strategies. The interface morphology of 3-D printed metallic part is an indicator of the part quality. To quantitatively evaluate the alloy-alloy interface quality, in this dissertation, the results of simulation carried out on CFD post software and actual experiments under the same working conditions are compared. Convective motion on different cross-sections can be observed, which further illustrates the underlying force state at different positions of the melt pool. A set of melt pool simulation schematics give a comprehensive view of 3-D printing of a metal material on a dissimilar metal base. Lastly, specific surface area growth rate is put forward to analyze the melt pool characteristics. The analysis and evaluation of the alloy-alloy interface can be utilized as an indicator to facilitate the reverse design of the metallic part, showing the connection between micro structure and macro behaviors, which provides a new thought to upgrade the 3-D printed metallic parts. Master of Science (Aerospace Engineering) 2021-03-15T06:39:07Z 2021-03-15T06:39:07Z 2021 Thesis-Master by Coursework Zhou, X. (2021). 3-D printing of a metal material on another dissimilar metal base. Master's thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/146897 https://hdl.handle.net/10356/146897 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Aeronautical engineering Engineering::Materials Zhou, Xiaoyue 3-D printing of a metal material on another dissimilar metal base |
| title | 3-D printing of a metal material on another dissimilar metal base |
| title_full | 3-D printing of a metal material on another dissimilar metal base |
| title_fullStr | 3-D printing of a metal material on another dissimilar metal base |
| title_full_unstemmed | 3-D printing of a metal material on another dissimilar metal base |
| title_short | 3-D printing of a metal material on another dissimilar metal base |
| title_sort | 3 d printing of a metal material on another dissimilar metal base |
| topic | Engineering::Aeronautical engineering Engineering::Materials |
| url | https://hdl.handle.net/10356/146897 |
| work_keys_str_mv | AT zhouxiaoyue 3dprintingofametalmaterialonanotherdissimilarmetalbase |