Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfaces
While multilayered thin film metallic glasses offer promising mechanical properties due to their interfaces, the correlation between chemical composition and and strain at the interfaces has not been investigated so far. Hence, atomic distance and composition variations across glassy Co80Ta7B13 / Co...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523007426 |
| _version_ | 1797647922707300352 |
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| author | S. Evertz J. Zálešák M. Hans H.C. Jansen J.F. Keckes H. Sheng J. Eckert C. Gammer J.M. Schneider |
| author_facet | S. Evertz J. Zálešák M. Hans H.C. Jansen J.F. Keckes H. Sheng J. Eckert C. Gammer J.M. Schneider |
| author_sort | S. Evertz |
| collection | DOAJ |
| description | While multilayered thin film metallic glasses offer promising mechanical properties due to their interfaces, the correlation between chemical composition and and strain at the interfaces has not been investigated so far. Hence, atomic distance and composition variations across glassy Co80Ta7B13 / Co62Ta6B32 interfaces are revealed by correlative transmission electron microscopy, nanobeam precession electron diffraction (NBPED) mapping and atom probe tomography (APT). A composition dependent mean atomic distance is identified for the individual layers. At the interfaces, a chemically graded region of 4 nm thickness is observed with APT, while the mean atomic distance gradient - investigated by NBPED mapping - extends over 9 nm and cannot solely be explained by chemical composition changes. Instead, the excess thickness of the atomic distance gradient compared to the chemical gradient can be rationalized by the presence of strain at the interface. |
| first_indexed | 2024-03-11T15:24:39Z |
| format | Article |
| id | doaj.art-dba9608875024586b3066e33ccbbb43e |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-11T15:24:39Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-dba9608875024586b3066e33ccbbb43e2023-10-28T05:06:29ZengElsevierMaterials & Design0264-12752023-10-01234112327Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfacesS. Evertz0J. Zálešák1M. Hans2H.C. Jansen3J.F. Keckes4H. Sheng5J. Eckert6C. Gammer7J.M. Schneider8Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, 52074 Aachen, Germany; Corresponding authors.Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, 8700 Leoben, AustriaMaterials Chemistry, RWTH Aachen University, Kopernikusstr. 10, 52074 Aachen, GermanyMaterials Chemistry, RWTH Aachen University, Kopernikusstr. 10, 52074 Aachen, GermanyDepartment of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, 8700 Leoben, Austria; Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstrasse 12, 8700 Leoben, AustriaErich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstrasse 12, 8700 Leoben, AustriaDepartment of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, Jahnstraße 12, 8700 Leoben, Austria; Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstrasse 12, 8700 Leoben, AustriaErich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstrasse 12, 8700 Leoben, Austria; Corresponding authors.Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, 52074 Aachen, GermanyWhile multilayered thin film metallic glasses offer promising mechanical properties due to their interfaces, the correlation between chemical composition and and strain at the interfaces has not been investigated so far. Hence, atomic distance and composition variations across glassy Co80Ta7B13 / Co62Ta6B32 interfaces are revealed by correlative transmission electron microscopy, nanobeam precession electron diffraction (NBPED) mapping and atom probe tomography (APT). A composition dependent mean atomic distance is identified for the individual layers. At the interfaces, a chemically graded region of 4 nm thickness is observed with APT, while the mean atomic distance gradient - investigated by NBPED mapping - extends over 9 nm and cannot solely be explained by chemical composition changes. Instead, the excess thickness of the atomic distance gradient compared to the chemical gradient can be rationalized by the presence of strain at the interface.http://www.sciencedirect.com/science/article/pii/S0264127523007426Metallic glassMultilayer thin filmsTransmission electron microscopyAtom probe tomography |
| spellingShingle | S. Evertz J. Zálešák M. Hans H.C. Jansen J.F. Keckes H. Sheng J. Eckert C. Gammer J.M. Schneider Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfaces Materials & Design Metallic glass Multilayer thin films Transmission electron microscopy Atom probe tomography |
| title | Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfaces |
| title_full | Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfaces |
| title_fullStr | Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfaces |
| title_full_unstemmed | Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfaces |
| title_short | Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfaces |
| title_sort | mapping strain across co80ta7b13 co62ta6b32 glassy interfaces |
| topic | Metallic glass Multilayer thin films Transmission electron microscopy Atom probe tomography |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523007426 |
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