Orientation dependence in superelastic Cu-Al-Mn-Ni micropillars
The superelastic behavior of single crystal Cu-Al-Mn-Ni shape memory alloy micro-pillars was studied under compression as a function of crystallographic orientation. Cylindrical pillars of about 2 μm diameter were micro-machined from targeted crystal orientations. While pillars oriented close to th...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2019
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| Online Access: | http://hdl.handle.net/1721.1/120775 https://orcid.org/0000-0001-7660-7210 https://orcid.org/0000-0001-9856-2682 |
| _version_ | 1826212331180261376 |
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| author | Fornell Beringues, Jordina Tuncer, Nihan Schuh, Christopher A |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Fornell Beringues, Jordina Tuncer, Nihan Schuh, Christopher A |
| author_sort | Fornell Beringues, Jordina |
| collection | MIT |
| description | The superelastic behavior of single crystal Cu-Al-Mn-Ni shape memory alloy micro-pillars was studied under compression as a function of crystallographic orientation. Cylindrical pillars of about 2 μm diameter were micro-machined from targeted crystal orientations. While pillars oriented close to the [001] direction showed the largest total transformation strain (~7%), plastic deformation dominate d the compressive response in the pillars milled close to the [111] direction due to their high elastic anisotropy combined with the large stresses required to induce th e transformation. Shape strain contour plots were constructed for γ’ and β’ martensites, and the martensite start stress was calculated using the Clausius-Clapeyron equation. The same general trends are observed in both the experimental and calculated results, with some exceptions: larger transformation stresses and lower transformation strains are observed in the microsized pillars. |
| first_indexed | 2024-09-23T15:20:00Z |
| format | Article |
| id | mit-1721.1/120775 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:20:00Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1207752022-09-29T14:17:02Z Orientation dependence in superelastic Cu-Al-Mn-Ni micropillars Fornell Beringues, Jordina Tuncer, Nihan Schuh, Christopher A Massachusetts Institute of Technology. Department of Materials Science and Engineering Schuh, Christopher A. Fornell Beringues, Jordina Tuncer, Nihan Schuh, Christopher A The superelastic behavior of single crystal Cu-Al-Mn-Ni shape memory alloy micro-pillars was studied under compression as a function of crystallographic orientation. Cylindrical pillars of about 2 μm diameter were micro-machined from targeted crystal orientations. While pillars oriented close to the [001] direction showed the largest total transformation strain (~7%), plastic deformation dominate d the compressive response in the pillars milled close to the [111] direction due to their high elastic anisotropy combined with the large stresses required to induce th e transformation. Shape strain contour plots were constructed for γ’ and β’ martensites, and the martensite start stress was calculated using the Clausius-Clapeyron equation. The same general trends are observed in both the experimental and calculated results, with some exceptions: larger transformation stresses and lower transformation strains are observed in the microsized pillars. United States. Army Research Office. Institute for Soldier Nanotechnologies (contract number W911NF-13-D-0001) Marie Curie Individual Fellowships ((FP7-PEOPLE-2012-IOF call) under contract number 327017) 2019-03-07T13:53:49Z 2019-03-07T13:53:49Z 2017-02 Article http://purl.org/eprint/type/JournalArticle 09258388 http://hdl.handle.net/1721.1/120775 Fornell, J., N. Tuncer, and C.A. Schuh. “Orientation Dependence in Superelastic Cu-Al-Mn-Ni Micropillars.” Journal of Alloys and Compounds 693 (February 2017): 1205–1213. https://orcid.org/0000-0001-7660-7210 https://orcid.org/0000-0001-9856-2682 en_US https://doi.org/10.1016/j.jallcom.2016.10.090 Journal of Alloys and Compounds Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Schuh via Erja Kajosalo |
| spellingShingle | Fornell Beringues, Jordina Tuncer, Nihan Schuh, Christopher A Orientation dependence in superelastic Cu-Al-Mn-Ni micropillars |
| title | Orientation dependence in superelastic Cu-Al-Mn-Ni micropillars |
| title_full | Orientation dependence in superelastic Cu-Al-Mn-Ni micropillars |
| title_fullStr | Orientation dependence in superelastic Cu-Al-Mn-Ni micropillars |
| title_full_unstemmed | Orientation dependence in superelastic Cu-Al-Mn-Ni micropillars |
| title_short | Orientation dependence in superelastic Cu-Al-Mn-Ni micropillars |
| title_sort | orientation dependence in superelastic cu al mn ni micropillars |
| url | http://hdl.handle.net/1721.1/120775 https://orcid.org/0000-0001-7660-7210 https://orcid.org/0000-0001-9856-2682 |
| work_keys_str_mv | AT fornellberinguesjordina orientationdependenceinsuperelasticcualmnnimicropillars AT tuncernihan orientationdependenceinsuperelasticcualmnnimicropillars AT schuhchristophera orientationdependenceinsuperelasticcualmnnimicropillars |