Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review
Grain refinement is the most universal and effective method of strengthening metallic materials, which is known as the “Hall-Petch” relationship. However, when grain size is refined to sub-micro regime (Ultrafine Grain, UFG) or even nano regime (Nano Grain, NG), the plasticity of metallic materials...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2020-08-01
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| Series: | Reviews on Advanced Materials Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/rams-2020-0028 |
| _version_ | 1818718289087430656 |
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| author | Hu Yusheng Yu Ziyun Fan Genlian Tan Zhanqiu Zhou Jiandang Zhang Hao Li Zhiqiang Zhang Di |
| author_facet | Hu Yusheng Yu Ziyun Fan Genlian Tan Zhanqiu Zhou Jiandang Zhang Hao Li Zhiqiang Zhang Di |
| author_sort | Hu Yusheng |
| collection | DOAJ |
| description | Grain refinement is the most universal and effective method of strengthening metallic materials, which is known as the “Hall-Petch” relationship. However, when grain size is refined to sub-micro regime (Ultrafine Grain, UFG) or even nano regime (Nano Grain, NG), the plasticity of metallic materials becomes poor. Massive studies indicate that the low strain hardening ability resulted from the enhanced dynamic recovery and lack of dislocation accumulation in fine grains is the main reason for low ductility in UFG/NG metals. To resolve this “strength-ductility” conflict, different strategies have been taken, like bimodal/multimodal structure, nanotwins, gradient structure and intragranular nano dispersoids. Among them, the introduction of nano dispersoids into the fine grains attracted lots of attention due to its wide applicability and great success in simultaneously increasing the strength and ductility of the UFG/NG metal. In addition to the enhanced mechanical performance, the introduced second-phase particle may also bring some extraordinary functional properties into the metallic material. In this paper, a brief view of the strategies to improve ductility of the UFG/NG metals and the relevant toughening mechanisms are revealed. Special attentions are paid to the utilization of intragranular nano dispersoids in Aluminum alloys. |
| first_indexed | 2024-12-17T19:48:41Z |
| format | Article |
| id | doaj.art-d8e59c32b1c94a599b3fb168483a329f |
| institution | Directory Open Access Journal |
| issn | 1605-8127 |
| language | English |
| last_indexed | 2024-12-17T19:48:41Z |
| publishDate | 2020-08-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Reviews on Advanced Materials Science |
| spelling | doaj.art-d8e59c32b1c94a599b3fb168483a329f2022-12-21T21:34:48ZengDe GruyterReviews on Advanced Materials Science1605-81272020-08-0159135236010.1515/rams-2020-0028rams-2020-0028Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief reviewHu Yusheng0Yu Ziyun1Fan Genlian2Tan Zhanqiu3Zhou Jiandang4Zhang Hao5Li Zhiqiang6Zhang Di7State Key Laboratory of Air-conditioning Equipment and System Energy Conservation, Zhuhai, 519070, ChinaState Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaState Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaState Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaJiangsu Haoran Spray Forming Alloy Co, Zhenjiang, 212003, ChinaJiangsu Haoran Spray Forming Alloy Co, Zhenjiang, 212003, ChinaState Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaState Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaGrain refinement is the most universal and effective method of strengthening metallic materials, which is known as the “Hall-Petch” relationship. However, when grain size is refined to sub-micro regime (Ultrafine Grain, UFG) or even nano regime (Nano Grain, NG), the plasticity of metallic materials becomes poor. Massive studies indicate that the low strain hardening ability resulted from the enhanced dynamic recovery and lack of dislocation accumulation in fine grains is the main reason for low ductility in UFG/NG metals. To resolve this “strength-ductility” conflict, different strategies have been taken, like bimodal/multimodal structure, nanotwins, gradient structure and intragranular nano dispersoids. Among them, the introduction of nano dispersoids into the fine grains attracted lots of attention due to its wide applicability and great success in simultaneously increasing the strength and ductility of the UFG/NG metal. In addition to the enhanced mechanical performance, the introduced second-phase particle may also bring some extraordinary functional properties into the metallic material. In this paper, a brief view of the strategies to improve ductility of the UFG/NG metals and the relevant toughening mechanisms are revealed. Special attentions are paid to the utilization of intragranular nano dispersoids in Aluminum alloys.https://doi.org/10.1515/rams-2020-0028strength-ductilitydislocationstrain hardeningultrafine grainsnano dispersion method |
| spellingShingle | Hu Yusheng Yu Ziyun Fan Genlian Tan Zhanqiu Zhou Jiandang Zhang Hao Li Zhiqiang Zhang Di Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review Reviews on Advanced Materials Science strength-ductility dislocation strain hardening ultrafine grains nano dispersion method |
| title | Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review |
| title_full | Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review |
| title_fullStr | Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review |
| title_full_unstemmed | Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review |
| title_short | Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review |
| title_sort | simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals a brief review |
| topic | strength-ductility dislocation strain hardening ultrafine grains nano dispersion method |
| url | https://doi.org/10.1515/rams-2020-0028 |
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