Influence of annealing time on shape memory effect of an Fe-Mn-Si based alloy during thermo-mechanical treatment
The shape memory effect of Fe-Mn-Si based alloys could be significantly improved by thermo-mechanical treatments. In this work, the cast Fe-Mn-Si based alloy was hot forged, 20% cold rolled and solution treated, followed by annealing at 1073 K for different time on some specimens deformed by 10% at...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2023-05-01
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| Series: | Cailiao gongcheng |
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| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.001160 |
| _version_ | 1797822385266622464 |
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| author | ZUO Yang SUN Lixin SONG Fan PENG Huabei CHEN Cong WEN Yuhua |
| author_facet | ZUO Yang SUN Lixin SONG Fan PENG Huabei CHEN Cong WEN Yuhua |
| author_sort | ZUO Yang |
| collection | DOAJ |
| description | The shape memory effect of Fe-Mn-Si based alloys could be significantly improved by thermo-mechanical treatments. In this work, the cast Fe-Mn-Si based alloy was hot forged, 20% cold rolled and solution treated, followed by annealing at 1073 K for different time on some specimens deformed by 10% at room temperature, and the effect of annealing time of thermo-mechanical treatments on the microstructures and shape memory effect of the Fe-Mn-Si based alloy was studied with the help of backscattered electron microanalysis (EBSD), RGM-4300 universal testing machine, differential four-terminal resistance method and bending method.Results show that the recovery strain of the solution-treated Fe-Mn-Si based alloy is 4.1%; when the annealing time of thermo-mechanical treatment is 10 min, the recovery strain is remarkably improved to 5.3%; As the annealing time of thermo-mechanical treatment is further prolonged, the recovery strain decreases; when the annealing time of thermo-mechanical treatments is 180 min, the recovery strain decreases to 4.9%. As the annealing time of thermo-mechanical treatments prolongs, the fraction of annealing twins increases, while the density of stacking faults decreases, which leads to the ability of facilitating stress-induced ε martensitic transformation and suppressing plastic glide weakening. This is the main reason why the recovery strain of the Fe-Mn-Si based alloy decreases with the annealing time of thermo-mechanical treatments prolonging. |
| first_indexed | 2024-03-13T10:07:13Z |
| format | Article |
| id | doaj.art-307d5b0e78934937943c76c5f0c0bbb7 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-03-13T10:07:13Z |
| publishDate | 2023-05-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-307d5b0e78934937943c76c5f0c0bbb72023-05-22T09:10:02ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812023-05-01515879310.11868/j.issn.1001-4381.2021.00116020230508Influence of annealing time on shape memory effect of an Fe-Mn-Si based alloy during thermo-mechanical treatmentZUO Yang0SUN Lixin1SONG Fan2PENG Huabei3CHEN Cong4WEN Yuhua5School of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaSchool of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaSchool of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaSchool of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaScience and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, ChinaSchool of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaThe shape memory effect of Fe-Mn-Si based alloys could be significantly improved by thermo-mechanical treatments. In this work, the cast Fe-Mn-Si based alloy was hot forged, 20% cold rolled and solution treated, followed by annealing at 1073 K for different time on some specimens deformed by 10% at room temperature, and the effect of annealing time of thermo-mechanical treatments on the microstructures and shape memory effect of the Fe-Mn-Si based alloy was studied with the help of backscattered electron microanalysis (EBSD), RGM-4300 universal testing machine, differential four-terminal resistance method and bending method.Results show that the recovery strain of the solution-treated Fe-Mn-Si based alloy is 4.1%; when the annealing time of thermo-mechanical treatment is 10 min, the recovery strain is remarkably improved to 5.3%; As the annealing time of thermo-mechanical treatment is further prolonged, the recovery strain decreases; when the annealing time of thermo-mechanical treatments is 180 min, the recovery strain decreases to 4.9%. As the annealing time of thermo-mechanical treatments prolongs, the fraction of annealing twins increases, while the density of stacking faults decreases, which leads to the ability of facilitating stress-induced ε martensitic transformation and suppressing plastic glide weakening. This is the main reason why the recovery strain of the Fe-Mn-Si based alloy decreases with the annealing time of thermo-mechanical treatments prolonging.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.001160shape memory alloysthermo-mechanical treatmentannealing twinsstacking fault |
| spellingShingle | ZUO Yang SUN Lixin SONG Fan PENG Huabei CHEN Cong WEN Yuhua Influence of annealing time on shape memory effect of an Fe-Mn-Si based alloy during thermo-mechanical treatment Cailiao gongcheng shape memory alloys thermo-mechanical treatment annealing twins stacking fault |
| title | Influence of annealing time on shape memory effect of an Fe-Mn-Si based alloy during thermo-mechanical treatment |
| title_full | Influence of annealing time on shape memory effect of an Fe-Mn-Si based alloy during thermo-mechanical treatment |
| title_fullStr | Influence of annealing time on shape memory effect of an Fe-Mn-Si based alloy during thermo-mechanical treatment |
| title_full_unstemmed | Influence of annealing time on shape memory effect of an Fe-Mn-Si based alloy during thermo-mechanical treatment |
| title_short | Influence of annealing time on shape memory effect of an Fe-Mn-Si based alloy during thermo-mechanical treatment |
| title_sort | influence of annealing time on shape memory effect of an fe mn si based alloy during thermo mechanical treatment |
| topic | shape memory alloys thermo-mechanical treatment annealing twins stacking fault |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.001160 |
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