Nanophase transformation and strengthening - Toughening mechanism of the Cu–15Ni–8Sn alloy during aging
The Cu–15Ni–8Sn alloy ingot was prepared in the medium-frequency induction melting furnace. The hot extruded alloy was treated by solid solution at 840 °C for 60 min and aging at 400 °C for different times (0 miñ480 min). The effect of aging time on the evolution of the nanophase of Cu–15Ni–8Sn allo...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423025206 |
| _version_ | 1797301535955222528 |
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| author | Jiang Kai-xuan Zhou Yan-jun Yang Ran Song Ke-xing Liu Ya-hui Zhang Yan-min Yang Shao-dan Zhou Fei Huang Kuan Liu Dong-dong Yang Wen-hao |
| author_facet | Jiang Kai-xuan Zhou Yan-jun Yang Ran Song Ke-xing Liu Ya-hui Zhang Yan-min Yang Shao-dan Zhou Fei Huang Kuan Liu Dong-dong Yang Wen-hao |
| author_sort | Jiang Kai-xuan |
| collection | DOAJ |
| description | The Cu–15Ni–8Sn alloy ingot was prepared in the medium-frequency induction melting furnace. The hot extruded alloy was treated by solid solution at 840 °C for 60 min and aging at 400 °C for different times (0 miñ480 min). The effect of aging time on the evolution of the nanophase of Cu–15Ni–8Sn alloy and the strengthening-toughening mechanism were studied. The results show that at the beginning of aging, the alloy undergoes spinodal decomposition, the wavelength of the modulated structure is approximately 3∼7 nm, the ordered phase transformation of D022 and L12 occurs simultaneously, and the ordered phase size is approximately 5 nm. With the extension of aging time, the modulated structure became coarser, and the wavelength of the modulated structure increased to 5–9 nm. At the same time, the D022 ordered phase changed to the L12 ordered phase, and a continuous distribution of elliptical discontinuous precipitation appeared at the grain boundary. The ratio of the long and short axes of the discontinuous precipitation was approximately 4.7. In the late aging period, the D022 ordered phase was basically transformed into the L12 ordered phase, and discontinuous precipitation, which is incompatible with the matrix, extended into the crystal. After 120 min of aging at 400 °C, the hardness, strength, and elongation of the alloy are 105.4 HRB, 839.8 MPa and 9.6 %, respectively. The peak-aging states D022 and L12 coexist in an orderly phase at the nanoscale, and this nanoscale strengthening phase is completely integrated with the matrix, which improves the strength and toughness of the alloy. The research results can provide support for the development of high-performance copper alloys in the ocean. |
| first_indexed | 2024-03-07T23:23:58Z |
| format | Article |
| id | doaj.art-8f2b9e5354fb480a9ec40873d0a48ca4 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-07T23:23:58Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-8f2b9e5354fb480a9ec40873d0a48ca42024-02-21T05:26:05ZengElsevierJournal of Materials Research and Technology2238-78542023-11-012722012215Nanophase transformation and strengthening - Toughening mechanism of the Cu–15Ni–8Sn alloy during agingJiang Kai-xuan0Zhou Yan-jun1Yang Ran2Song Ke-xing3Liu Ya-hui4Zhang Yan-min5Yang Shao-dan6Zhou Fei7Huang Kuan8Liu Dong-dong9Yang Wen-hao10School 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; Provincial and Ministerial Co-construction Collaborative Innovation Center of Nonferrous New Materials and Advanced Processing Technology, Luoyang 471023, China; Henan Key Laboratory of Advanced Nonferrous Metals, Luoyang 471023, China; Corresponding author. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Corresponding author.School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Henan Academy of Sciences, Zhengzhou 450046, China; Corresponding author. Henan Academy of Sciences, Zhengzhou 450046, China.School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang, Henan 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Provincial and Ministerial Co-construction Collaborative Innovation Center of Nonferrous New Materials and Advanced Processing Technology, Luoyang 471023, China; Henan Key Laboratory of Advanced Nonferrous Metals, Luoyang 471023, ChinaHenan Academy of Sciences, Zhengzhou 450046, China; School of Material Science & Engineering, Zhengzhou University, Zhengzhou 450001, 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, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaThe Cu–15Ni–8Sn alloy ingot was prepared in the medium-frequency induction melting furnace. The hot extruded alloy was treated by solid solution at 840 °C for 60 min and aging at 400 °C for different times (0 miñ480 min). The effect of aging time on the evolution of the nanophase of Cu–15Ni–8Sn alloy and the strengthening-toughening mechanism were studied. The results show that at the beginning of aging, the alloy undergoes spinodal decomposition, the wavelength of the modulated structure is approximately 3∼7 nm, the ordered phase transformation of D022 and L12 occurs simultaneously, and the ordered phase size is approximately 5 nm. With the extension of aging time, the modulated structure became coarser, and the wavelength of the modulated structure increased to 5–9 nm. At the same time, the D022 ordered phase changed to the L12 ordered phase, and a continuous distribution of elliptical discontinuous precipitation appeared at the grain boundary. The ratio of the long and short axes of the discontinuous precipitation was approximately 4.7. In the late aging period, the D022 ordered phase was basically transformed into the L12 ordered phase, and discontinuous precipitation, which is incompatible with the matrix, extended into the crystal. After 120 min of aging at 400 °C, the hardness, strength, and elongation of the alloy are 105.4 HRB, 839.8 MPa and 9.6 %, respectively. The peak-aging states D022 and L12 coexist in an orderly phase at the nanoscale, and this nanoscale strengthening phase is completely integrated with the matrix, which improves the strength and toughness of the alloy. The research results can provide support for the development of high-performance copper alloys in the ocean.http://www.sciencedirect.com/science/article/pii/S2238785423025206Cu-15Ni–8Sn alloyAgingOrdered phaseDiscontinuous precipitationStrengthening-toughening mechanism |
| spellingShingle | Jiang Kai-xuan Zhou Yan-jun Yang Ran Song Ke-xing Liu Ya-hui Zhang Yan-min Yang Shao-dan Zhou Fei Huang Kuan Liu Dong-dong Yang Wen-hao Nanophase transformation and strengthening - Toughening mechanism of the Cu–15Ni–8Sn alloy during aging Journal of Materials Research and Technology Cu-15Ni–8Sn alloy Aging Ordered phase Discontinuous precipitation Strengthening-toughening mechanism |
| title | Nanophase transformation and strengthening - Toughening mechanism of the Cu–15Ni–8Sn alloy during aging |
| title_full | Nanophase transformation and strengthening - Toughening mechanism of the Cu–15Ni–8Sn alloy during aging |
| title_fullStr | Nanophase transformation and strengthening - Toughening mechanism of the Cu–15Ni–8Sn alloy during aging |
| title_full_unstemmed | Nanophase transformation and strengthening - Toughening mechanism of the Cu–15Ni–8Sn alloy during aging |
| title_short | Nanophase transformation and strengthening - Toughening mechanism of the Cu–15Ni–8Sn alloy during aging |
| title_sort | nanophase transformation and strengthening toughening mechanism of the cu 15ni 8sn alloy during aging |
| topic | Cu-15Ni–8Sn alloy Aging Ordered phase Discontinuous precipitation Strengthening-toughening mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423025206 |
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