Multi-directional deformation for coordinating isotropy and strength-ductility synergy in a CoCrNi alloy
Due to the intrinsic lattice symmetry, anisotropy always exists in metallic materials, and it will be further enhanced or reduced to a certain degree during the subsequent processing, leading to the directional strength-ductility modulation. To meet the high-performance requirements for complicated...
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| Format: | Article |
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425011731 |
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| author | Na Lin Zhicheng Miao Mingcan Li Rumeng Huang Kaiyuan Zheng Zhaowen Huang Donghui Wen Cong Zhang Anding Wang |
| author_facet | Na Lin Zhicheng Miao Mingcan Li Rumeng Huang Kaiyuan Zheng Zhaowen Huang Donghui Wen Cong Zhang Anding Wang |
| author_sort | Na Lin |
| collection | DOAJ |
| description | Due to the intrinsic lattice symmetry, anisotropy always exists in metallic materials, and it will be further enhanced or reduced to a certain degree during the subsequent processing, leading to the directional strength-ductility modulation. To meet the high-performance requirements for complicated servicing environments, the isotropy should always be coordinated. In this study, an equ-atomic CoCrNi alloy with significant work hardening ability yet extraordinary processability was selected as a model material, and rotary rolling (RR) and unidirectional rolling (UR) were employed to modulate the deformation isotropy. It is found that the RR-ed sample achieves an exceptional strength-ductility combination with strength of 1569 ± 16 MPa and uniform elongation of 8.8± 0.1 %. Moreover, the ultimate tensile strength fluctuation of the RR-ed sample is smaller than 30 MPa (1.9 %) when the tensile angle ranges from 0° to 90 °, showing much better homogeneity compared to the UR counterpart (183 MPa, 11.1 %). This unique mechanical property isotropy is ascribed to the relatively uniform in-plane microstructure distribution, as well as the analogous cracking behavior along different directions. These results might provide a new strategy and basic theory for achieving high performances in multi-direction by machining advanced structure materials. |
| format | Article |
| id | doaj-art-fdbee11f4ea44eca81e160f881d70647 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-fdbee11f4ea44eca81e160f881d706472025-08-20T02:28:38ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01367495750610.1016/j.jmrt.2025.05.019Multi-directional deformation for coordinating isotropy and strength-ductility synergy in a CoCrNi alloyNa Lin0Zhicheng Miao1Mingcan Li2Rumeng Huang3Kaiyuan Zheng4Zhaowen Huang5Donghui Wen6Cong Zhang7Anding Wang8School of Materials Science and Engineering & Xinjiang Engineering Research Center of Environmental and Functional Materials, Xinjiang University, Urumqi, Xinjiang, 830046, China; Research Institute of Interdisciplinary Science & School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, ChinaSchool of Materials Science and Engineering & Xinjiang Engineering Research Center of Environmental and Functional Materials, Xinjiang University, Urumqi, Xinjiang, 830046, China; Research Institute of Interdisciplinary Science & School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, ChinaSchool of Materials Science and Engineering & Xinjiang Engineering Research Center of Environmental and Functional Materials, Xinjiang University, Urumqi, Xinjiang, 830046, China; Corresponding author.Research Institute of Interdisciplinary Science & School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, ChinaResearch Institute of Interdisciplinary Science & School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, ChinaResearch Institute of Interdisciplinary Science & School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, China; Corresponding author.Research Institute of Interdisciplinary Science & School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, ChinaInstitute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; Spallation Neutron Source Science Center, Dongguan, 523803, ChinaResearch Institute of Interdisciplinary Science & School of Materials Science and Engineering, Dongguan University of Technology, Dongguan, 523808, China; Corresponding author.Due to the intrinsic lattice symmetry, anisotropy always exists in metallic materials, and it will be further enhanced or reduced to a certain degree during the subsequent processing, leading to the directional strength-ductility modulation. To meet the high-performance requirements for complicated servicing environments, the isotropy should always be coordinated. In this study, an equ-atomic CoCrNi alloy with significant work hardening ability yet extraordinary processability was selected as a model material, and rotary rolling (RR) and unidirectional rolling (UR) were employed to modulate the deformation isotropy. It is found that the RR-ed sample achieves an exceptional strength-ductility combination with strength of 1569 ± 16 MPa and uniform elongation of 8.8± 0.1 %. Moreover, the ultimate tensile strength fluctuation of the RR-ed sample is smaller than 30 MPa (1.9 %) when the tensile angle ranges from 0° to 90 °, showing much better homogeneity compared to the UR counterpart (183 MPa, 11.1 %). This unique mechanical property isotropy is ascribed to the relatively uniform in-plane microstructure distribution, as well as the analogous cracking behavior along different directions. These results might provide a new strategy and basic theory for achieving high performances in multi-direction by machining advanced structure materials.http://www.sciencedirect.com/science/article/pii/S2238785425011731Multi-directional deformationRotary rollingIsotropyMechanical propertyComplex component alloy |
| spellingShingle | Na Lin Zhicheng Miao Mingcan Li Rumeng Huang Kaiyuan Zheng Zhaowen Huang Donghui Wen Cong Zhang Anding Wang Multi-directional deformation for coordinating isotropy and strength-ductility synergy in a CoCrNi alloy Journal of Materials Research and Technology Multi-directional deformation Rotary rolling Isotropy Mechanical property Complex component alloy |
| title | Multi-directional deformation for coordinating isotropy and strength-ductility synergy in a CoCrNi alloy |
| title_full | Multi-directional deformation for coordinating isotropy and strength-ductility synergy in a CoCrNi alloy |
| title_fullStr | Multi-directional deformation for coordinating isotropy and strength-ductility synergy in a CoCrNi alloy |
| title_full_unstemmed | Multi-directional deformation for coordinating isotropy and strength-ductility synergy in a CoCrNi alloy |
| title_short | Multi-directional deformation for coordinating isotropy and strength-ductility synergy in a CoCrNi alloy |
| title_sort | multi directional deformation for coordinating isotropy and strength ductility synergy in a cocrni alloy |
| topic | Multi-directional deformation Rotary rolling Isotropy Mechanical property Complex component alloy |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425011731 |
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