Cold sprayed Cu/Invar alloy composite
Cold spray, an additive manufacturing technique based on plastic deformation of particles, was employed to prepare Cu/Invar alloy composites to avoid issues from other preparation methods, like undesirable thermal expansion anisotropy from the extrusion method and the excessive inter-diffusion betwe...
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| Format: | Article |
| Language: | English |
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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/S2238785424030734 |
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| author | D.L. Ouyang Z.R. Wang T. Yang L.W. Zhang D. Wu W.F. Chen Q. Hu S. Guo |
| author_facet | D.L. Ouyang Z.R. Wang T. Yang L.W. Zhang D. Wu W.F. Chen Q. Hu S. Guo |
| author_sort | D.L. Ouyang |
| collection | DOAJ |
| description | Cold spray, an additive manufacturing technique based on plastic deformation of particles, was employed to prepare Cu/Invar alloy composites to avoid issues from other preparation methods, like undesirable thermal expansion anisotropy from the extrusion method and the excessive inter-diffusion between Cu and the Invar alloy from the sintering method. For the target Cux(Fe64Ni36)100-x(x = 30–70, wt%) composites prepared by cold spray, the improved thermal expansion anisotropy was reflected by the negligible difference between the thermal expansion coefficient α along and perpendicular to the spray direction, and simultaneously no obvious inter-diffusion was observed between Cu and the Invar alloy Fe64Ni36 after annealing at 500 °C. Both α and the thermal conductivity λ increased slightly due to the release of internal stress and recrystallization of Cu. α of the annealed composites basically agreed with the theoretical predication, but λ was far below the values predicted by the Hasselman–Johnson model, mostly because the Invar alloy had an extraordinarily large surface area caused by impact deformation. Even so, the cold-sprayed Cu/Invar alloy composites had clearly advantageous comprehensive performance than those prepared by the traditional sintering and melting methods. Among Cu/Invar alloy composites prepared by different methods, the annealed Cu50(Fe64Ni36)50 was the only composite having λ larger than 100 W/m∙K and isotropic α smaller than 10 × 10−6/oC. In addition, the cold-sprayed Cu/Invar alloy composites had a good plasticity (after annealing) that is rarely seen in traditional Cu-based composites with high thermal conductivity, presenting a good application potential for electronic packaging materials. |
| format | Article |
| id | doaj-art-8bebd71b19574fe9a3045baa93c9d243 |
| 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-8bebd71b19574fe9a3045baa93c9d2432025-01-19T06:26:03ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013426732683Cold sprayed Cu/Invar alloy compositeD.L. Ouyang0Z.R. Wang1T. Yang2L.W. Zhang3D. Wu4W.F. Chen5Q. Hu6S. Guo7Key Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province, Nanchang Hangkong University, Nanchang, 330063, ChinaKey Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province, Nanchang Hangkong University, Nanchang, 330063, China; Institute of Applied Physics, Jiangxi Academy of Sciences, Nanchang, 330096, ChinaKey Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province, Nanchang Hangkong University, Nanchang, 330063, China; Institute of Applied Physics, Jiangxi Academy of Sciences, Nanchang, 330096, ChinaInstitute of Applied Physics, Jiangxi Academy of Sciences, Nanchang, 330096, ChinaInstitute of Applied Physics, Jiangxi Academy of Sciences, Nanchang, 330096, ChinaInstitute of Applied Physics, Jiangxi Academy of Sciences, Nanchang, 330096, ChinaInstitute of Applied Physics, Jiangxi Academy of Sciences, Nanchang, 330096, China; Corresponding author.Industrial and Materials Science, Chalmers University of Technology, SE-41296, Göteborg, SwedenCold spray, an additive manufacturing technique based on plastic deformation of particles, was employed to prepare Cu/Invar alloy composites to avoid issues from other preparation methods, like undesirable thermal expansion anisotropy from the extrusion method and the excessive inter-diffusion between Cu and the Invar alloy from the sintering method. For the target Cux(Fe64Ni36)100-x(x = 30–70, wt%) composites prepared by cold spray, the improved thermal expansion anisotropy was reflected by the negligible difference between the thermal expansion coefficient α along and perpendicular to the spray direction, and simultaneously no obvious inter-diffusion was observed between Cu and the Invar alloy Fe64Ni36 after annealing at 500 °C. Both α and the thermal conductivity λ increased slightly due to the release of internal stress and recrystallization of Cu. α of the annealed composites basically agreed with the theoretical predication, but λ was far below the values predicted by the Hasselman–Johnson model, mostly because the Invar alloy had an extraordinarily large surface area caused by impact deformation. Even so, the cold-sprayed Cu/Invar alloy composites had clearly advantageous comprehensive performance than those prepared by the traditional sintering and melting methods. Among Cu/Invar alloy composites prepared by different methods, the annealed Cu50(Fe64Ni36)50 was the only composite having λ larger than 100 W/m∙K and isotropic α smaller than 10 × 10−6/oC. In addition, the cold-sprayed Cu/Invar alloy composites had a good plasticity (after annealing) that is rarely seen in traditional Cu-based composites with high thermal conductivity, presenting a good application potential for electronic packaging materials.http://www.sciencedirect.com/science/article/pii/S2238785424030734Cold sprayInvar alloyThermal conductivityThermal expansion coefficientElectronic packaging materials |
| spellingShingle | D.L. Ouyang Z.R. Wang T. Yang L.W. Zhang D. Wu W.F. Chen Q. Hu S. Guo Cold sprayed Cu/Invar alloy composite Journal of Materials Research and Technology Cold spray Invar alloy Thermal conductivity Thermal expansion coefficient Electronic packaging materials |
| title | Cold sprayed Cu/Invar alloy composite |
| title_full | Cold sprayed Cu/Invar alloy composite |
| title_fullStr | Cold sprayed Cu/Invar alloy composite |
| title_full_unstemmed | Cold sprayed Cu/Invar alloy composite |
| title_short | Cold sprayed Cu/Invar alloy composite |
| title_sort | cold sprayed cu invar alloy composite |
| topic | Cold spray Invar alloy Thermal conductivity Thermal expansion coefficient Electronic packaging materials |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424030734 |
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