Nano-structures at martensite macrotwin interfaces in $Ni_{65}Al_{35}$
The atomic configurations at macrotwin interfaces between microtwinned martensite plates in $Ni_{65}Al_{35}$ material are investigated using transmission electron microscopy. The observed structures are interpreted in view of possible formation mechanisms for these interfaces. A distinction is mad...
| Main Authors: | , , |
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| Format: | Journal article |
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2003
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| _version_ | 1826306622715068416 |
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| author | Boullay, P Schryvers, D Ball, J |
| author_facet | Boullay, P Schryvers, D Ball, J |
| author_sort | Boullay, P |
| collection | OXFORD |
| description | The atomic configurations at macrotwin interfaces between microtwinned martensite plates in $Ni_{65}Al_{35}$ material are investigated using transmission electron microscopy. The observed structures are interpreted in view of possible formation mechanisms for these interfaces. A distinction is made between cases in which the microtwins, originating from mutually perpendicular \{110\} austenite planes, enclose a final angle larger or smaller than $90^{\circ}$. Two different configurations, a crossing and a step type are described. Depending on the actual case, tapering, bending and tip splitting of the smaller microtwin variants are observed. The most reproducible deformations occur in a region of approximately 5-10nm width around the interface while a variety of structural defects are observed further away from the interface. These structures and deformations are interpreted in terms of the coalescence of two separately nucleated microtwinned martensite plates and the need to accommodate remaining stresses. |
| first_indexed | 2024-03-07T06:50:45Z |
| format | Journal article |
| id | oxford-uuid:fc7b5526-211b-46be-aab9-b219bc3e32d1 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:50:45Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:fc7b5526-211b-46be-aab9-b219bc3e32d12022-03-27T13:21:05ZNano-structures at martensite macrotwin interfaces in $Ni_{65}Al_{35}$Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fc7b5526-211b-46be-aab9-b219bc3e32d1Mathematical Institute - ePrints2003Boullay, PSchryvers, DBall, JThe atomic configurations at macrotwin interfaces between microtwinned martensite plates in $Ni_{65}Al_{35}$ material are investigated using transmission electron microscopy. The observed structures are interpreted in view of possible formation mechanisms for these interfaces. A distinction is made between cases in which the microtwins, originating from mutually perpendicular \{110\} austenite planes, enclose a final angle larger or smaller than $90^{\circ}$. Two different configurations, a crossing and a step type are described. Depending on the actual case, tapering, bending and tip splitting of the smaller microtwin variants are observed. The most reproducible deformations occur in a region of approximately 5-10nm width around the interface while a variety of structural defects are observed further away from the interface. These structures and deformations are interpreted in terms of the coalescence of two separately nucleated microtwinned martensite plates and the need to accommodate remaining stresses. |
| spellingShingle | Boullay, P Schryvers, D Ball, J Nano-structures at martensite macrotwin interfaces in $Ni_{65}Al_{35}$ |
| title | Nano-structures at martensite macrotwin interfaces in $Ni_{65}Al_{35}$ |
| title_full | Nano-structures at martensite macrotwin interfaces in $Ni_{65}Al_{35}$ |
| title_fullStr | Nano-structures at martensite macrotwin interfaces in $Ni_{65}Al_{35}$ |
| title_full_unstemmed | Nano-structures at martensite macrotwin interfaces in $Ni_{65}Al_{35}$ |
| title_short | Nano-structures at martensite macrotwin interfaces in $Ni_{65}Al_{35}$ |
| title_sort | nano structures at martensite macrotwin interfaces in ni 65 al 35 |
| work_keys_str_mv | AT boullayp nanostructuresatmartensitemacrotwininterfacesinni65al35 AT schryversd nanostructuresatmartensitemacrotwininterfacesinni65al35 AT ballj nanostructuresatmartensitemacrotwininterfacesinni65al35 |