High temperature strengthening mechanism of pure Zn with trace Mn addition
This work reveals how trace Mn significantly improves high temperature strength of pure Zn. The peak stress of pure Zn increases from 46 MPa to 84 MPa at 300 °C/0.1 s−1 after 0.8 wt.% Mn addition. The as-compressed Zn-0.8Mn alloy has a bimodal grain structure with fine grains surrounding a coarse gr...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423016745 |
| _version_ | 1797745103270313984 |
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| author | Meng Li Zhe Xue Zhang-Zhi Shi Yi-Nan Wang Fu-Zhi Dai Li-Zhi Zhang Shao-Xiong Zhou Bing-Xin Huang Zhen-Peng Guan Lu-Ning Wang |
| author_facet | Meng Li Zhe Xue Zhang-Zhi Shi Yi-Nan Wang Fu-Zhi Dai Li-Zhi Zhang Shao-Xiong Zhou Bing-Xin Huang Zhen-Peng Guan Lu-Ning Wang |
| author_sort | Meng Li |
| collection | DOAJ |
| description | This work reveals how trace Mn significantly improves high temperature strength of pure Zn. The peak stress of pure Zn increases from 46 MPa to 84 MPa at 300 °C/0.1 s−1 after 0.8 wt.% Mn addition. The as-compressed Zn-0.8Mn alloy has a bimodal grain structure with fine grains surrounding a coarse grain. Transmission electron microscopy results show that Mn addition promotes activation of non-basal <c+a> slip and pile-up of dislocations near coarse/fine grain boundary or MnZn13/Zn interface or on the MnZn13 particles. First-principles calculations indicate that Mn addition can reduce stacking fault energy values of basal and prismatic slip systems of Zn, therefore activating <c+a> slip. Piled dislocations generate forward and back stresses, resulting in hetero-deformation induced strengthening. It serves as a suggestion for designing bimodal grain structures to improve strength of Zn alloys. |
| first_indexed | 2024-03-12T15:19:41Z |
| format | Article |
| id | doaj.art-34255fc416f04382869ec29cd11b5af6 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:19:41Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-34255fc416f04382869ec29cd11b5af62023-08-11T05:34:40ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012567646776High temperature strengthening mechanism of pure Zn with trace Mn additionMeng Li0Zhe Xue1Zhang-Zhi Shi2Yi-Nan Wang3Fu-Zhi Dai4Li-Zhi Zhang5Shao-Xiong Zhou6Bing-Xin Huang7Zhen-Peng Guan8Lu-Ning Wang9State Key Laboratory for Advanced Metals and Materials, Key Laboratory for Advanced Materials Processing of Ministry of Education, Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, Key Laboratory for Advanced Materials Processing of Ministry of Education, Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Orthopedics Department, Peking University ShouGang Hospital, Beijing 100144, ChinaState Key Laboratory for Advanced Metals and Materials, Key Laboratory for Advanced Materials Processing of Ministry of Education, Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Corresponding author.Artificial Intelligence for Science Institute, Beijing 100871, China; School of Mathematical Sciences, Peking University, Beijing 100871, ChinaArtificial Intelligence for Science Institute, Beijing 100871, ChinaState Key Laboratory for Advanced Metals and Materials, Key Laboratory for Advanced Materials Processing of Ministry of Education, Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaCentral Iron and Steel Research Institute, Beijing 100081, ChinaState Key Laboratory for Advanced Metals and Materials, Key Laboratory for Advanced Materials Processing of Ministry of Education, Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaOrthopedics Department, Peking University ShouGang Hospital, Beijing 100144, China; Corresponding author.State Key Laboratory for Advanced Metals and Materials, Key Laboratory for Advanced Materials Processing of Ministry of Education, Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Corresponding author.This work reveals how trace Mn significantly improves high temperature strength of pure Zn. The peak stress of pure Zn increases from 46 MPa to 84 MPa at 300 °C/0.1 s−1 after 0.8 wt.% Mn addition. The as-compressed Zn-0.8Mn alloy has a bimodal grain structure with fine grains surrounding a coarse grain. Transmission electron microscopy results show that Mn addition promotes activation of non-basal <c+a> slip and pile-up of dislocations near coarse/fine grain boundary or MnZn13/Zn interface or on the MnZn13 particles. First-principles calculations indicate that Mn addition can reduce stacking fault energy values of basal and prismatic slip systems of Zn, therefore activating <c+a> slip. Piled dislocations generate forward and back stresses, resulting in hetero-deformation induced strengthening. It serves as a suggestion for designing bimodal grain structures to improve strength of Zn alloys.http://www.sciencedirect.com/science/article/pii/S2238785423016745Zn alloysHeterostructureHigh temperature strengthMicrostructure |
| spellingShingle | Meng Li Zhe Xue Zhang-Zhi Shi Yi-Nan Wang Fu-Zhi Dai Li-Zhi Zhang Shao-Xiong Zhou Bing-Xin Huang Zhen-Peng Guan Lu-Ning Wang High temperature strengthening mechanism of pure Zn with trace Mn addition Journal of Materials Research and Technology Zn alloys Heterostructure High temperature strength Microstructure |
| title | High temperature strengthening mechanism of pure Zn with trace Mn addition |
| title_full | High temperature strengthening mechanism of pure Zn with trace Mn addition |
| title_fullStr | High temperature strengthening mechanism of pure Zn with trace Mn addition |
| title_full_unstemmed | High temperature strengthening mechanism of pure Zn with trace Mn addition |
| title_short | High temperature strengthening mechanism of pure Zn with trace Mn addition |
| title_sort | high temperature strengthening mechanism of pure zn with trace mn addition |
| topic | Zn alloys Heterostructure High temperature strength Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423016745 |
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