Study on the microstructure evolution and strengthening mechanism of Cu-Ni-Si alloy after two-stage rolling and aging
With the development of high-end integrated circuits toward higher integration and ultra-thin designs, the comprehensive performance requirements for Cu-Ni-Si alloys as lead frame materials continue to increase. In this paper, the microstructure of the alloy is optimized by adjusting the deformation...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-06-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525003557 |
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| author | Yunqi Shan Yanmin Zhang Chaomin Zhang Jiang Feng Baohuan Huang Shiheng Zhao Kexing Song |
| author_facet | Yunqi Shan Yanmin Zhang Chaomin Zhang Jiang Feng Baohuan Huang Shiheng Zhao Kexing Song |
| author_sort | Yunqi Shan |
| collection | DOAJ |
| description | With the development of high-end integrated circuits toward higher integration and ultra-thin designs, the comprehensive performance requirements for Cu-Ni-Si alloys as lead frame materials continue to increase. In this paper, the microstructure of the alloy is optimized by adjusting the deformation and aging parameters during the two-stage rolling process to enhance its performance and reveal the underlying mechanism. It was found that the hardness and strength of the alloy were enhanced while the conductivity remained unchanged or even slightly improved. With an increase in two-stage rolling deformation, the dislocation density of the alloy increases, promoting the rapid precipitation of the second phase and a reduction in grain size. The improvement in strength is primarily attributed to the synergistic effects of dislocation strengthening, precipitation strengthening, and grain boundary strengthening. In addition, with an increase in deformation, the texture strength of Cube, S, and Copper gradually decreases, while that of Brass increases significantly. This texture transformation is positively correlated with the comprehensive properties of the alloy. |
| format | Article |
| id | doaj-art-2f6265338b0e447fbe01656b149a1dc9 |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-2f6265338b0e447fbe01656b149a1dc92025-08-20T03:46:50ZengElsevierMaterials & Design0264-12752025-06-0125411393510.1016/j.matdes.2025.113935Study on the microstructure evolution and strengthening mechanism of Cu-Ni-Si alloy after two-stage rolling and agingYunqi Shan0Yanmin Zhang1Chaomin Zhang2Jiang Feng3Baohuan Huang4Shiheng Zhao5Kexing Song6School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Institute of Materials, Henan Academy of Sciences, Zhengzhou 450046, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Henan Province Key Laboratory of Nonferrous Materials Science and Processing Technology, Luoyang 471023, China; Corresponding authors at: College of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Henan Province Key Laboratory of Nonferrous Materials Science and Processing Technology, Luoyang 471023, China; Corresponding authors at: College of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Henan Province Key Laboratory of Nonferrous Materials Science and Processing Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Henan Province Key Laboratory of Nonferrous Materials Science and Processing Technology, Luoyang 471023, China; Henan Academy of Sciences, Zhengzhou 450046, China; Henan Key Laboratory of Advanced Conductor Materials, Zhengzhou 450046, China; Institute of Materials, Henan Academy of Sciences, Zhengzhou 450046, China; Corresponding authors at: College of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.With the development of high-end integrated circuits toward higher integration and ultra-thin designs, the comprehensive performance requirements for Cu-Ni-Si alloys as lead frame materials continue to increase. In this paper, the microstructure of the alloy is optimized by adjusting the deformation and aging parameters during the two-stage rolling process to enhance its performance and reveal the underlying mechanism. It was found that the hardness and strength of the alloy were enhanced while the conductivity remained unchanged or even slightly improved. With an increase in two-stage rolling deformation, the dislocation density of the alloy increases, promoting the rapid precipitation of the second phase and a reduction in grain size. The improvement in strength is primarily attributed to the synergistic effects of dislocation strengthening, precipitation strengthening, and grain boundary strengthening. In addition, with an increase in deformation, the texture strength of Cube, S, and Copper gradually decreases, while that of Brass increases significantly. This texture transformation is positively correlated with the comprehensive properties of the alloy.http://www.sciencedirect.com/science/article/pii/S0264127525003557Two-stage rolling agingMicrostructure propertiesδ-Ni2Si phaseDislocation densityTexture |
| spellingShingle | Yunqi Shan Yanmin Zhang Chaomin Zhang Jiang Feng Baohuan Huang Shiheng Zhao Kexing Song Study on the microstructure evolution and strengthening mechanism of Cu-Ni-Si alloy after two-stage rolling and aging Materials & Design Two-stage rolling aging Microstructure properties δ-Ni2Si phase Dislocation density Texture |
| title | Study on the microstructure evolution and strengthening mechanism of Cu-Ni-Si alloy after two-stage rolling and aging |
| title_full | Study on the microstructure evolution and strengthening mechanism of Cu-Ni-Si alloy after two-stage rolling and aging |
| title_fullStr | Study on the microstructure evolution and strengthening mechanism of Cu-Ni-Si alloy after two-stage rolling and aging |
| title_full_unstemmed | Study on the microstructure evolution and strengthening mechanism of Cu-Ni-Si alloy after two-stage rolling and aging |
| title_short | Study on the microstructure evolution and strengthening mechanism of Cu-Ni-Si alloy after two-stage rolling and aging |
| title_sort | study on the microstructure evolution and strengthening mechanism of cu ni si alloy after two stage rolling and aging |
| topic | Two-stage rolling aging Microstructure properties δ-Ni2Si phase Dislocation density Texture |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525003557 |
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