Complexion-mediated martensitic phase transformation in Titanium
The most efficient way to tune microstructures and mechanical properties of metallic alloys lies in designing and using athermal phase transformations. Examples are shape memory alloys and high strength steels, which together stand for 1,500 million tons annual production. In these materials, marten...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2017
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| Online Access: | http://hdl.handle.net/1721.1/110169 |
| _version_ | 1811074712053219328 |
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| author | Zhang, J. Lai, M. J. Dippel, A. -C. Raabe, D. Tasan, Cemal |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Zhang, J. Lai, M. J. Dippel, A. -C. Raabe, D. Tasan, Cemal |
| author_sort | Zhang, J. |
| collection | MIT |
| description | The most efficient way to tune microstructures and mechanical properties of metallic alloys lies in designing and using athermal phase transformations. Examples are shape memory alloys and high strength steels, which together stand for 1,500 million tons annual production. In these materials, martensite formation and mechanical twinning are tuned via composition adjustment for realizing complex microstructures and beneficial mechanical properties. Here we report a new phase transformation that has the potential to widen the application window of Ti alloys, the most important structural material in aerospace design, by nanostructuring them via complexion-mediated transformation. This is a reversible martensitic transformation mechanism that leads to a final nanolaminate structure of α″ (orthorhombic) martensite bounded with planar complexions of athermal ω (a–ω, hexagonal). Both phases are crystallographically related to the parent β (BCC) matrix. As expected from a planar complexion, the a–ω is stable only at the hetero-interface. |
| first_indexed | 2024-09-23T09:54:10Z |
| format | Article |
| id | mit-1721.1/110169 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:54:10Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1101692022-09-26T14:28:11Z Complexion-mediated martensitic phase transformation in Titanium Zhang, J. Lai, M. J. Dippel, A. -C. Raabe, D. Tasan, Cemal Massachusetts Institute of Technology. Department of Materials Science and Engineering Tasan, Cemal The most efficient way to tune microstructures and mechanical properties of metallic alloys lies in designing and using athermal phase transformations. Examples are shape memory alloys and high strength steels, which together stand for 1,500 million tons annual production. In these materials, martensite formation and mechanical twinning are tuned via composition adjustment for realizing complex microstructures and beneficial mechanical properties. Here we report a new phase transformation that has the potential to widen the application window of Ti alloys, the most important structural material in aerospace design, by nanostructuring them via complexion-mediated transformation. This is a reversible martensitic transformation mechanism that leads to a final nanolaminate structure of α″ (orthorhombic) martensite bounded with planar complexions of athermal ω (a–ω, hexagonal). Both phases are crystallographically related to the parent β (BCC) matrix. As expected from a planar complexion, the a–ω is stable only at the hetero-interface. European Commission. Framework Programme for Research and Innovation (FP7/2007–2013))/ERC Grant agreement 290998 'SmartMet’) Innovative Research Team in University (IRT13034) National Basic Research Program of China (973 Program) (2014CB644003) China. Ministry of Science and Technology. National Key Research and Development Program (2016YFB0701302) National Natural Science Foundation of China (51501145) National Natural Science Foundation of China (51320105014) National Natural Science Foundation of China (51621063) 2017-06-22T15:30:35Z 2017-06-22T15:30:35Z 2017-02 2016-05 Article http://purl.org/eprint/type/JournalArticle 2041-1723 http://hdl.handle.net/1721.1/110169 Zhang, J., C. C. Tasan, M. J. Lai, A. -C. Dippel, and D. Raabe. “Complexion-Mediated Martensitic Phase Transformation in Titanium.” Nature Communications 8 (February 1, 2017): 14210. en_US http://dx.doi.org/10.1038/ncomms14210 Nature Communications Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature |
| spellingShingle | Zhang, J. Lai, M. J. Dippel, A. -C. Raabe, D. Tasan, Cemal Complexion-mediated martensitic phase transformation in Titanium |
| title | Complexion-mediated martensitic phase transformation in Titanium |
| title_full | Complexion-mediated martensitic phase transformation in Titanium |
| title_fullStr | Complexion-mediated martensitic phase transformation in Titanium |
| title_full_unstemmed | Complexion-mediated martensitic phase transformation in Titanium |
| title_short | Complexion-mediated martensitic phase transformation in Titanium |
| title_sort | complexion mediated martensitic phase transformation in titanium |
| url | http://hdl.handle.net/1721.1/110169 |
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