Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy
Piling-ups of geometrically necessary dislocation (GND) arrays against interfaces are known to produce hetero-deformation induced (HDI) strengthening and strain hardening to enhance the strength and ductility of heterostructured materials. Here we report an interesting dislocation mechanism that can...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-08-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2023.2208166 |
| _version_ | 1797244373359919104 |
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| author | Yi Liu Mengning Xu Lirong Xiao Xuefei Chen Zhaohua Hu Bo Gao Ningning Liang Yuntian Zhu Yang Cao Hao Zhou |
| author_facet | Yi Liu Mengning Xu Lirong Xiao Xuefei Chen Zhaohua Hu Bo Gao Ningning Liang Yuntian Zhu Yang Cao Hao Zhou |
| author_sort | Yi Liu |
| collection | DOAJ |
| description | Piling-ups of geometrically necessary dislocation (GND) arrays against interfaces are known to produce hetero-deformation induced (HDI) strengthening and strain hardening to enhance the strength and ductility of heterostructured materials. Here we report an interesting dislocation mechanism that can produce strong HDI hardening: consecutive reflections of GND planar piling-up arrays near the opposite phase boundaries in a heterostructured AlCoCrFeNi2 high entropy alloy (HEA). In contrast, dislocation transmission was found at grain boundaries in the fcc phase. The discovery here provides guidance for future materials design, which may improve the combination of strength and ductility of metallic materials. |
| first_indexed | 2024-03-09T10:45:51Z |
| format | Article |
| id | doaj.art-cf5770a4a0f14ddda4891f1e87256078 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-04-24T19:09:59Z |
| publishDate | 2023-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-cf5770a4a0f14ddda4891f1e872560782024-03-26T11:43:38ZengTaylor & Francis GroupMaterials Research Letters2166-38312023-08-0111863864710.1080/21663831.2023.2208166Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloyYi Liu0Mengning Xu1Lirong Xiao2Xuefei Chen3Zhaohua Hu4Bo Gao5Ningning Liang6Yuntian Zhu7Yang Cao8Hao Zhou9Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, People’s Republic of ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, People’s Republic of ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, People’s Republic of ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of ChinaAnsteel Beijing Research Institute Co., Ltd., Beijing, People’s Republic of ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, People’s Republic of ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, People’s Republic of ChinaDepartment of Materials Science and Engineering, City University of Hong Kong, Hong Kong, People’s Republic of ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, People’s Republic of ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, People’s Republic of ChinaPiling-ups of geometrically necessary dislocation (GND) arrays against interfaces are known to produce hetero-deformation induced (HDI) strengthening and strain hardening to enhance the strength and ductility of heterostructured materials. Here we report an interesting dislocation mechanism that can produce strong HDI hardening: consecutive reflections of GND planar piling-up arrays near the opposite phase boundaries in a heterostructured AlCoCrFeNi2 high entropy alloy (HEA). In contrast, dislocation transmission was found at grain boundaries in the fcc phase. The discovery here provides guidance for future materials design, which may improve the combination of strength and ductility of metallic materials.https://www.tandfonline.com/doi/10.1080/21663831.2023.2208166High entropy alloysHeterostructured materialsinterfacesin-situ TEMdeformation mechanism |
| spellingShingle | Yi Liu Mengning Xu Lirong Xiao Xuefei Chen Zhaohua Hu Bo Gao Ningning Liang Yuntian Zhu Yang Cao Hao Zhou Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy Materials Research Letters High entropy alloys Heterostructured materials interfaces in-situ TEM deformation mechanism |
| title | Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy |
| title_full | Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy |
| title_fullStr | Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy |
| title_full_unstemmed | Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy |
| title_short | Dislocation array reflection enhances strain hardening of a dual-phase heterostructured high-entropy alloy |
| title_sort | dislocation array reflection enhances strain hardening of a dual phase heterostructured high entropy alloy |
| topic | High entropy alloys Heterostructured materials interfaces in-situ TEM deformation mechanism |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2023.2208166 |
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