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Crystallographic Orientation Relationship with Geometrically Necessary Dislocation Accumulation During High-Temperature Deformation in RR1000 Nickel-Based Superalloy
Soran Birosca 
Metallurgical and Materials Transactions A, Volume: 50, Issue: 2, Pages: 534 - 539
Swansea University Author:
Soran Birosca
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DOI (Published version): 10.1007/s11661-018-5036-y
Abstract
In the current study, it is demonstrated that soft grains along 〈100〉 fiber provided a pure shear condition for easy dislocation movement leading to a relatively low dislocation density. The hard grains along the 〈111〉 fiber, however, were not favorably oriented for slip system activation and caused...
| Published in: | Metallurgical and Materials Transactions A |
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| ISSN: | 1073-5623 1543-1940 |
| Published: |
Springer Science and Business Media LLC
2019
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa45993 |
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| Abstract: |
In the current study, it is demonstrated that soft grains along 〈100〉 fiber provided a pure shear condition for easy dislocation movement leading to a relatively low dislocation density. The hard grains along the 〈111〉 fiber, however, were not favorably oriented for slip system activation and caused high dislocation accumulation. It is concluded that the average overall dislocation density does not provide a meaningful value, as it is largely dependent on the original material crystallographic texture, the numbers of hard and soft grains in the electron backscatter diffraction (EBSD) mapped area, and the grain size factor. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
2 |
| Start Page: |
534 |
| End Page: |
539 |