Mechanical properties and energy absorption of CoCrNi functionally graded TPMS cellular structures
Functionally gradient triply periodic minimal surface (TPMS) structures are found widespread applications in fields such as aerospace and defense engineering, owing to flexible modulation of lightweight and energy-absorbing properties. CoCrNi medium-entropy alloy (MEA), combining both high strength...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424030631 |
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| author | Zhaoyi Wang Junxian Zhou Yunzhuo Lu Dongming Li Deyu Yue Xu Zhang Bingzhi Chen |
| author_facet | Zhaoyi Wang Junxian Zhou Yunzhuo Lu Dongming Li Deyu Yue Xu Zhang Bingzhi Chen |
| author_sort | Zhaoyi Wang |
| collection | DOAJ |
| description | Functionally gradient triply periodic minimal surface (TPMS) structures are found widespread applications in fields such as aerospace and defense engineering, owing to flexible modulation of lightweight and energy-absorbing properties. CoCrNi medium-entropy alloy (MEA), combining both high strength and ductility, which can significantly enhance the energy absorption efficiency and resistance to failure deformation of complex energy-absorbing structures. In this study, CoCrNi uniform and functionally gradient structures based on Gyroid and Diamond topologies were designed and manufactured via selective laser melting (SLM) technique. The quasi-static and dynamic mechanical performance, deformation behavior, and energy absorption properties of each structure were investigated by universal testing machine and Split Hopkinson Pressure Bar (SHPB) system. Additionally, based on experimental validation, the Johnson-Cook constitutive model for SLM-ed CoCrNi was successfully developed and applied to finite element analysis (FEA) predictions. Notably, it is found that the multi-level absorbing feature of hybrid gradient (HG) provides new insights for the design of energy-absorbing structures, as its lower initial platform triggering threshold and multi-level hardening behavior align with the layer-by-layer collapse deformation of the structure. By integrating appropriate parameter mapping, the mechanical properties can be predicted and regulated more flexibly, thereby paving the way for novel high-performance energy-absorbing structures. |
| format | Article |
| id | doaj-art-b1a60e7a561647dc8584b89b89c848f8 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-b1a60e7a561647dc8584b89b89c848f82025-01-19T06:26:00ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013427722787Mechanical properties and energy absorption of CoCrNi functionally graded TPMS cellular structuresZhaoyi Wang0Junxian Zhou1Yunzhuo Lu2Dongming Li3Deyu Yue4Xu Zhang5Bingzhi Chen6Key Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train, Dalian Jiaotong University, Dalian, 116028, China; School of Mechanical Engineering, Dalian Jiaotong University, Dalian, 116028, ChinaKey Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train, Dalian Jiaotong University, Dalian, 116028, China; School of CRRC, Dalian Jiaotong University, Dalian, 116028, ChinaSchool of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, ChinaKey Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train, Dalian Jiaotong University, Dalian, 116028, China; School of CRRC, Dalian Jiaotong University, Dalian, 116028, ChinaKey Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train, Dalian Jiaotong University, Dalian, 116028, China; School of Mechanical Engineering, Dalian Jiaotong University, Dalian, 116028, China; School of CRRC, Dalian Jiaotong University, Dalian, 116028, China; School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, China; School of Materials Science and Engineering (Key Laboratory of Automobile Materials Ministry of Education), Jilin University, Changchun, 130022, ChinaKey Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train, Dalian Jiaotong University, Dalian, 116028, China; School of CRRC, Dalian Jiaotong University, Dalian, 116028, China; Corresponding author. Key Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train, Dalian Jiaotong University, Dalian, 116028, China.Key Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train, Dalian Jiaotong University, Dalian, 116028, China; School of Mechanical Engineering, Dalian Jiaotong University, Dalian, 116028, China; Corresponding author. Key Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train, Dalian Jiaotong University, Dalian, 116028, China.Functionally gradient triply periodic minimal surface (TPMS) structures are found widespread applications in fields such as aerospace and defense engineering, owing to flexible modulation of lightweight and energy-absorbing properties. CoCrNi medium-entropy alloy (MEA), combining both high strength and ductility, which can significantly enhance the energy absorption efficiency and resistance to failure deformation of complex energy-absorbing structures. In this study, CoCrNi uniform and functionally gradient structures based on Gyroid and Diamond topologies were designed and manufactured via selective laser melting (SLM) technique. The quasi-static and dynamic mechanical performance, deformation behavior, and energy absorption properties of each structure were investigated by universal testing machine and Split Hopkinson Pressure Bar (SHPB) system. Additionally, based on experimental validation, the Johnson-Cook constitutive model for SLM-ed CoCrNi was successfully developed and applied to finite element analysis (FEA) predictions. Notably, it is found that the multi-level absorbing feature of hybrid gradient (HG) provides new insights for the design of energy-absorbing structures, as its lower initial platform triggering threshold and multi-level hardening behavior align with the layer-by-layer collapse deformation of the structure. By integrating appropriate parameter mapping, the mechanical properties can be predicted and regulated more flexibly, thereby paving the way for novel high-performance energy-absorbing structures.http://www.sciencedirect.com/science/article/pii/S2238785424030631Triply periodic minimal surfaceFunctionally graded structureSelective laser meltingCoCrNi medium-entropy alloyEnergy absorption |
| spellingShingle | Zhaoyi Wang Junxian Zhou Yunzhuo Lu Dongming Li Deyu Yue Xu Zhang Bingzhi Chen Mechanical properties and energy absorption of CoCrNi functionally graded TPMS cellular structures Journal of Materials Research and Technology Triply periodic minimal surface Functionally graded structure Selective laser melting CoCrNi medium-entropy alloy Energy absorption |
| title | Mechanical properties and energy absorption of CoCrNi functionally graded TPMS cellular structures |
| title_full | Mechanical properties and energy absorption of CoCrNi functionally graded TPMS cellular structures |
| title_fullStr | Mechanical properties and energy absorption of CoCrNi functionally graded TPMS cellular structures |
| title_full_unstemmed | Mechanical properties and energy absorption of CoCrNi functionally graded TPMS cellular structures |
| title_short | Mechanical properties and energy absorption of CoCrNi functionally graded TPMS cellular structures |
| title_sort | mechanical properties and energy absorption of cocrni functionally graded tpms cellular structures |
| topic | Triply periodic minimal surface Functionally graded structure Selective laser melting CoCrNi medium-entropy alloy Energy absorption |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424030631 |
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