Thermomechanical behavior at the nanoscale and size effects in shape memory alloys
Shape memory alloys (SMA) undergo reversible martensitic transformation in response to changes in temperature or applied stress, resulting in the properties of superelasticity and shape memory. At present, there is high scientific and technological interest to develop these properties at small scale...
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| Format: | Article |
| Language: | en_US |
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Cambridge University Press (Materials Research Society)
2013
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| Online Access: | http://hdl.handle.net/1721.1/79784 https://orcid.org/0000-0001-9856-2682 |
| _version_ | 1811073143330045952 |
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| author | San Juan, Jose Schuh, Christopher A. No, Maria L. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering San Juan, Jose Schuh, Christopher A. No, Maria L. |
| author_sort | San Juan, Jose |
| collection | MIT |
| description | Shape memory alloys (SMA) undergo reversible martensitic transformation in response to changes in temperature or applied stress, resulting in the properties of superelasticity and shape memory. At present, there is high scientific and technological interest to develop these properties at small scales and apply SMA as sensors and actuators in microelectromechanical system technologies. To study the thermomechanical properties of SMA at micro and nanoscales, instrumented nanoindentation is widely used to conduct nanopillar compression tests. By using this technique, superelasticity and shape memory at the nanoscale have been demonstrated in micro and nanopillars of Cu–Al–Ni SMA. However, the martensitic transformation seems to exhibit different behavior at small scales, and a size effect on superelasticity has been recently reported. In this study, we provide an overview of the thermomechanical properties of Cu–Al–Ni SMA at the nanoscale, with special emphasis on size effects. Finally, these size effects are discussed in light of the microscopic mechanisms controlling the martensitic transformation at the nanoscale. |
| first_indexed | 2024-09-23T09:29:07Z |
| format | Article |
| id | mit-1721.1/79784 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:29:07Z |
| publishDate | 2013 |
| publisher | Cambridge University Press (Materials Research Society) |
| record_format | dspace |
| spelling | mit-1721.1/797842022-09-26T11:41:07Z Thermomechanical behavior at the nanoscale and size effects in shape memory alloys San Juan, Jose Schuh, Christopher A. No, Maria L. Massachusetts Institute of Technology. Department of Materials Science and Engineering Schuh, Christopher A. Shape memory alloys (SMA) undergo reversible martensitic transformation in response to changes in temperature or applied stress, resulting in the properties of superelasticity and shape memory. At present, there is high scientific and technological interest to develop these properties at small scales and apply SMA as sensors and actuators in microelectromechanical system technologies. To study the thermomechanical properties of SMA at micro and nanoscales, instrumented nanoindentation is widely used to conduct nanopillar compression tests. By using this technique, superelasticity and shape memory at the nanoscale have been demonstrated in micro and nanopillars of Cu–Al–Ni SMA. However, the martensitic transformation seems to exhibit different behavior at small scales, and a size effect on superelasticity has been recently reported. In this study, we provide an overview of the thermomechanical properties of Cu–Al–Ni SMA at the nanoscale, with special emphasis on size effects. Finally, these size effects are discussed in light of the microscopic mechanisms controlling the martensitic transformation at the nanoscale. United States. Army Research Office (Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies) 2013-08-05T16:29:37Z 2013-08-05T16:29:37Z 2011-10 2011-02 Article http://purl.org/eprint/type/JournalArticle 0884-2914 2044-5326 http://hdl.handle.net/1721.1/79784 San Juan, Jose, Maria L. Nó, and Christopher A. Schuh. “Thermomechanical behavior at the nanoscale and size effects in shape memory alloys.” Journal of Materials Research 26, no. 19 (October 10, 2011): 2461-2469. © Materials Research Society 2011 https://orcid.org/0000-0001-9856-2682 en_US http://dx.doi.org/10.1557/jmr.2011.291 Journal of Materials Research Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Cambridge University Press (Materials Research Society) MIT web domain |
| spellingShingle | San Juan, Jose Schuh, Christopher A. No, Maria L. Thermomechanical behavior at the nanoscale and size effects in shape memory alloys |
| title | Thermomechanical behavior at the nanoscale and size effects in shape memory alloys |
| title_full | Thermomechanical behavior at the nanoscale and size effects in shape memory alloys |
| title_fullStr | Thermomechanical behavior at the nanoscale and size effects in shape memory alloys |
| title_full_unstemmed | Thermomechanical behavior at the nanoscale and size effects in shape memory alloys |
| title_short | Thermomechanical behavior at the nanoscale and size effects in shape memory alloys |
| title_sort | thermomechanical behavior at the nanoscale and size effects in shape memory alloys |
| url | http://hdl.handle.net/1721.1/79784 https://orcid.org/0000-0001-9856-2682 |
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