Comparison of Shaped Charge Jet Performance Generated by Machined and Additively Manufactured CuSn10 Liners
Autor: | Jianbing Men, Shengjie Sun, Jianwei Jiang, Yawei Wang, Mei Li, Shuyou Wang |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
shaped charge liner
Technology Shaped charge Materials science Article Penetration test selective laser melting CuSn10 jet performance penetration capability microstructures General Materials Science Composite material Selective laser melting Penetration depth Jet (fluid) Microscopy QC120-168.85 QH201-278.5 Engineering (General). Civil engineering (General) Grain size TK1-9971 Descriptive and experimental mechanics Flash (manufacturing) Electrical engineering. Electronics. Nuclear engineering TA1-2040 Necking |
Zdroj: | Materials, Vol 14, Iss 7149, p 7149 (2021) Materials; Volume 14; Issue 23; Pages: 7149 Materials |
ISSN: | 1996-1944 |
Popis: | The Selective Laser Melting (SLM) technique has attracted attention in a wide range of manufacturing research areas, including the defense industry because of its high efficiency and good consistency of manufactured material properties. Shaped charge liner is the crucial unit in the shaped charge warhead. However, jet performance formed by SLM-produced liner remains to be studied systematically. In the present research work, the SLM technique was applied to manufacture CuSn10 shaped charge liners. Casted CuSn10 liners were also fabricated using the classical turning method for comparison. The grain size of the SLM-produced liner was found to be much smaller than the machined liner due to the rapid heating and cooling rate during the SLM manufacturing process. This contributed to improved jet performance. A flash X-ray photography system was applied to capture jet stretching appearances. Necking appears at the jet tip formed by the machined liner, while the jet formed by the SLM-produced liner remains continuous. Penetration test results show that the penetration depth of the jet formed by the SLM-produced liner is around 27% larger than that formed by the machined liner. Segments along the sidewall of the penetration tunnels were selected for in-depth micro analysis. Energy dispersed spectrum (EDS) surface scanning results indicate the composition at the side wall of the penetrated tunnel. Metallurgical microscope was applied to distinguish four different phase zones of the target. The width of these different zones indicates the severity of the lateral interaction between the jet and target, which can be adopted to evaluate jet penetration capability. The present study analyzes the factors that influence jet performances and proves that SLM technology is well-adapted in the manufacturing of shaped charge liners. |
Databáze: | OpenAIRE |
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