Friction stir processing for superplasticity and other applications
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2003.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2005
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| Online Access: | http://hdl.handle.net/1721.1/7980 |
| _version_ | 1811092427845402624 |
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| author | Johannes, Lucie Beth, 1978- |
| author2 | Thomas W. Eagar. |
| author_facet | Thomas W. Eagar. Johannes, Lucie Beth, 1978- |
| author_sort | Johannes, Lucie Beth, 1978- |
| collection | MIT |
| description | Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2003. |
| first_indexed | 2024-09-23T15:18:00Z |
| format | Thesis |
| id | mit-1721.1/7980 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T15:18:00Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/79802019-04-12T09:31:56Z Friction stir processing for superplasticity and other applications Johannes, Lucie Beth, 1978- Thomas W. Eagar. Massachusetts Institute of Technology. Dept. of Materials Science and Engineering. Massachusetts Institute of Technology. Dept. of Materials Science and Engineering. Materials Science and Engineering. Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2003. Includes bibliographical references (leaves 47-50). Friction stir welding is a recent welding technology that had expanding the capabilities of welding aluminum alloys. From this process, it was discovered that the microstructural properties of a metal could be altered with a single pass of the tool, and from this the area of friction stir processing can be expanded beyond welding. While friction stir processing is a new field of research, many areas of study have been discovered including the area of friction stir superplasticity. Using the small grain size achieved by the process and the high grain boundary mis-orientation angle, it has been found that friction stir processing is capable of creating high strain rate superplasticity in aluminum alloys. This study evaluates the technology of friction stir processing. In detail, the study examines the applications, competing technologies, intellectual property, and the start of the business aspects of the technology. In summary, it was found that the main applications for the technology are in the automotive and aerospace industries. The largest competing technology generally uses a six-step process that does not allow for high strain rates and thick sections. Both of these can be achieved by friction stir processing. Key patents in the area were also examined. In the business evaluation it was determined that the technology would likely be applied first in the automotive industry and used by a major automotive manufacturer in order to reduce costs. Overall, friction stir superplasticity appears to have a lot of potential for future superplasticity applications. by Lucie Beth Johannes. M.Eng. 2005-08-24T23:26:44Z 2005-08-24T23:26:44Z 2003 2003 Thesis http://hdl.handle.net/1721.1/7980 54810041 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 50 leaves 3315605 bytes 3315362 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Materials Science and Engineering. Johannes, Lucie Beth, 1978- Friction stir processing for superplasticity and other applications |
| title | Friction stir processing for superplasticity and other applications |
| title_full | Friction stir processing for superplasticity and other applications |
| title_fullStr | Friction stir processing for superplasticity and other applications |
| title_full_unstemmed | Friction stir processing for superplasticity and other applications |
| title_short | Friction stir processing for superplasticity and other applications |
| title_sort | friction stir processing for superplasticity and other applications |
| topic | Materials Science and Engineering. |
| url | http://hdl.handle.net/1721.1/7980 |
| work_keys_str_mv | AT johannesluciebeth1978 frictionstirprocessingforsuperplasticityandotherapplications |