Atomic diffusion behavior in Cu-Al explosive welding process
A hybrid method is proposed to study atomic diffusion behavior in Cu-Al explosive welding process. The method combines molecular dynamics simulation and classical diffusion theory. Cu-Al explosive welding and scanning electron microscope experiments are done to verify the method. Using the method...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/100640 http://hdl.handle.net/10220/9936 |
| _version_ | 1826123311572058112 |
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| author | Liu, K. X. Li, X. J. Luo, N. Lu, Guoxing. Chen, S. Y. Wu, Z. W. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Liu, K. X. Li, X. J. Luo, N. Lu, Guoxing. Chen, S. Y. Wu, Z. W. |
| author_sort | Liu, K. X. |
| collection | NTU |
| description | A hybrid method is proposed to study atomic diffusion behavior in Cu-Al explosive welding
process. The method combines molecular dynamics simulation and classical diffusion theory.
Cu-Al explosive welding and scanning electron microscope experiments are done to verify the
method. Using the method, we find that the atomic diffusion mostly takes place in the unloading
stage of the welding process. The diffusion coefficients are collision velocity-dependent, with
higher velocities generating larger coefficients. When there is no transverse velocity, the diffusion
coefficient is directly proportional to the longitudinal velocity. With the longitudinal velocity fixed,
the diffusion coefficient is proportional to the square of the transverse velocity. The thickness of
the diffusion layer is calculated from the simulation result, and it is in good agreement with the
experiment result. |
| first_indexed | 2024-10-01T06:02:35Z |
| format | Journal Article |
| id | ntu-10356/100640 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:02:35Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1006402023-03-04T17:19:17Z Atomic diffusion behavior in Cu-Al explosive welding process Liu, K. X. Li, X. J. Luo, N. Lu, Guoxing. Chen, S. Y. Wu, Z. W. School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering A hybrid method is proposed to study atomic diffusion behavior in Cu-Al explosive welding process. The method combines molecular dynamics simulation and classical diffusion theory. Cu-Al explosive welding and scanning electron microscope experiments are done to verify the method. Using the method, we find that the atomic diffusion mostly takes place in the unloading stage of the welding process. The diffusion coefficients are collision velocity-dependent, with higher velocities generating larger coefficients. When there is no transverse velocity, the diffusion coefficient is directly proportional to the longitudinal velocity. With the longitudinal velocity fixed, the diffusion coefficient is proportional to the square of the transverse velocity. The thickness of the diffusion layer is calculated from the simulation result, and it is in good agreement with the experiment result. Published version 2013-05-20T06:37:22Z 2019-12-06T20:25:48Z 2013-05-20T06:37:22Z 2019-12-06T20:25:48Z 2013 2013 Journal Article Chen, S. Y., Wu, Z. W., Liu, K. X., Li, X. J., Luo, N., & Lu, G. (2013). Atomic diffusion behavior in Cu-Al explosive welding process. Journal of Applied Physics, 113(4). 00218979 https://hdl.handle.net/10356/100640 http://hdl.handle.net/10220/9936 10.1063/1.4775788 en Journal of applied physics © 2013 American Institute of Physics. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: http://dx.doi.org/10.1063/1.4775788. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering Liu, K. X. Li, X. J. Luo, N. Lu, Guoxing. Chen, S. Y. Wu, Z. W. Atomic diffusion behavior in Cu-Al explosive welding process |
| title | Atomic diffusion behavior in Cu-Al explosive welding process |
| title_full | Atomic diffusion behavior in Cu-Al explosive welding process |
| title_fullStr | Atomic diffusion behavior in Cu-Al explosive welding process |
| title_full_unstemmed | Atomic diffusion behavior in Cu-Al explosive welding process |
| title_short | Atomic diffusion behavior in Cu-Al explosive welding process |
| title_sort | atomic diffusion behavior in cu al explosive welding process |
| topic | DRNTU::Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/100640 http://hdl.handle.net/10220/9936 |
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