Enhanced pseudoelasticity of an Fe–Mn–Si-based shape memory alloy by applying microstructural engineering through recrystallization and precipitation
The aim of this work is to provide a novel understanding of pseudoelasticity mechanisms in an FeMnSi-based shape memory alloy and to utilize the identified parameters to control and enhance the mechanical behavior of the alloy. The alloy was processed by employing caliber rolling to an equivalent st...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422016313 |
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| author | Hesamodin Khodaverdi Maryam Mohri Elyas Ghafoori Amir Sabet Ghorabaei Mahmoud Nili-Ahmadabadi |
| author_facet | Hesamodin Khodaverdi Maryam Mohri Elyas Ghafoori Amir Sabet Ghorabaei Mahmoud Nili-Ahmadabadi |
| author_sort | Hesamodin Khodaverdi |
| collection | DOAJ |
| description | The aim of this work is to provide a novel understanding of pseudoelasticity mechanisms in an FeMnSi-based shape memory alloy and to utilize the identified parameters to control and enhance the mechanical behavior of the alloy. The alloy was processed by employing caliber rolling to an equivalent strain of 0.25 at room temperature. Various heat treatments from 530 to 1000 °C were applied to study the microstructural evolution and pseudoelasticity behavior during short-term post-deformation annealing (PDA) and aging. A minimum residual strain of 2.85% was achieved after 4% loading in tension by annealing the cold-worked sample at 925 °C for 50 min followed by aging at 750 °C for 6 h; this is the lowest ever reported residual strain for this alloy. Moreover, the absorbed energy increased from 17 to 22 J/cm3, indicating a 30% enhancement compared with the as-received aged sample. These improvements in pseudoelasticity and absorbed energy make this alloy more suitable for seismic damping application by providing more recentering after energy dissipation. The improvements are mainly attributed to grain refinement, which stimulates a uniform distribution of precipitates inside the austenite grains after PDA and aging. Additionally, grain refinement modifies the morphology and size of precipitates, resulting in an increased number of stacking faults and a high volume fraction of ε-martensite, and diminishes the probability of the intersection of ε-martensite laths with each other and subsequent α′-martensite formation. |
| first_indexed | 2024-04-11T12:49:46Z |
| format | Article |
| id | doaj.art-61f37b01091b4feea9d01c8159748cf0 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T12:49:46Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-61f37b01091b4feea9d01c8159748cf02022-12-22T04:23:14ZengElsevierJournal of Materials Research and Technology2238-78542022-11-012129993013Enhanced pseudoelasticity of an Fe–Mn–Si-based shape memory alloy by applying microstructural engineering through recrystallization and precipitationHesamodin Khodaverdi0Maryam Mohri1Elyas Ghafoori2Amir Sabet Ghorabaei3Mahmoud Nili-Ahmadabadi4School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, IranEmpa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland; Corresponding author.Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland; Institute for Steel Construction, Faculty of Civil Engineering and Geodetic Science, Leibniz University Hannover, 30167 Hannover, GermanySchool of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, IranSchool of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran; Corresponding author.The aim of this work is to provide a novel understanding of pseudoelasticity mechanisms in an FeMnSi-based shape memory alloy and to utilize the identified parameters to control and enhance the mechanical behavior of the alloy. The alloy was processed by employing caliber rolling to an equivalent strain of 0.25 at room temperature. Various heat treatments from 530 to 1000 °C were applied to study the microstructural evolution and pseudoelasticity behavior during short-term post-deformation annealing (PDA) and aging. A minimum residual strain of 2.85% was achieved after 4% loading in tension by annealing the cold-worked sample at 925 °C for 50 min followed by aging at 750 °C for 6 h; this is the lowest ever reported residual strain for this alloy. Moreover, the absorbed energy increased from 17 to 22 J/cm3, indicating a 30% enhancement compared with the as-received aged sample. These improvements in pseudoelasticity and absorbed energy make this alloy more suitable for seismic damping application by providing more recentering after energy dissipation. The improvements are mainly attributed to grain refinement, which stimulates a uniform distribution of precipitates inside the austenite grains after PDA and aging. Additionally, grain refinement modifies the morphology and size of precipitates, resulting in an increased number of stacking faults and a high volume fraction of ε-martensite, and diminishes the probability of the intersection of ε-martensite laths with each other and subsequent α′-martensite formation.http://www.sciencedirect.com/science/article/pii/S2238785422016313Fe–17Mn–5Si–10Cr–4Ni–1(V–C) (wt.%)Fe-based shape memory alloy (SMA)SuperelasticityResidual strainGrain refinement |
| spellingShingle | Hesamodin Khodaverdi Maryam Mohri Elyas Ghafoori Amir Sabet Ghorabaei Mahmoud Nili-Ahmadabadi Enhanced pseudoelasticity of an Fe–Mn–Si-based shape memory alloy by applying microstructural engineering through recrystallization and precipitation Journal of Materials Research and Technology Fe–17Mn–5Si–10Cr–4Ni–1(V–C) (wt.%) Fe-based shape memory alloy (SMA) Superelasticity Residual strain Grain refinement |
| title | Enhanced pseudoelasticity of an Fe–Mn–Si-based shape memory alloy by applying microstructural engineering through recrystallization and precipitation |
| title_full | Enhanced pseudoelasticity of an Fe–Mn–Si-based shape memory alloy by applying microstructural engineering through recrystallization and precipitation |
| title_fullStr | Enhanced pseudoelasticity of an Fe–Mn–Si-based shape memory alloy by applying microstructural engineering through recrystallization and precipitation |
| title_full_unstemmed | Enhanced pseudoelasticity of an Fe–Mn–Si-based shape memory alloy by applying microstructural engineering through recrystallization and precipitation |
| title_short | Enhanced pseudoelasticity of an Fe–Mn–Si-based shape memory alloy by applying microstructural engineering through recrystallization and precipitation |
| title_sort | enhanced pseudoelasticity of an fe mn si based shape memory alloy by applying microstructural engineering through recrystallization and precipitation |
| topic | Fe–17Mn–5Si–10Cr–4Ni–1(V–C) (wt.%) Fe-based shape memory alloy (SMA) Superelasticity Residual strain Grain refinement |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422016313 |
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