Microscale deformation of intermetallic-Mg interface under shear loading
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916528900800512 |
|---|---|
| author | Kanjilal, Anwesha Aliramaji, Shamsa Neuß, Deborah Hans, Marcus Schneider, Jochen M. Best, James P. Dehm, Gerhard |
| author_facet | Kanjilal, Anwesha Aliramaji, Shamsa Neuß, Deborah Hans, Marcus Schneider, Jochen M. Best, James P. Dehm, Gerhard |
| contents | While intermetallic (IM)-metal interfaces in metallic alloys are critical for tuning mechanical properties, they can also act as failure sites, underscoring the importance of determining their strength. This study reports on a novel microshear geometry, and demonstrates its applicability for testing the strength and deformation behavior of IM-metal interfaces in Mg-Al-Ca alloys, a key material for light weight automotive applications. The shear tests are applied to a model bi-layered system grown by magnetron sputtering, comprising of a CaMg2 film deposited onto a Mg layer. A parametric study was performed using finite element modeling to optimize the specimen dimensions. Subsequently, in situ microshear tests conducted inside a scanning electron microscope revealed an interface shear strength of ~136 MPa, and provided insights into the stages of deformation progression. Post mortem examination of the sheared interface revealed an irregular surface indicating ductile deformation at room temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_12913 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Microscale deformation of intermetallic-Mg interface under shear loading Kanjilal, Anwesha Aliramaji, Shamsa Neuß, Deborah Hans, Marcus Schneider, Jochen M. Best, James P. Dehm, Gerhard Materials Science While intermetallic (IM)-metal interfaces in metallic alloys are critical for tuning mechanical properties, they can also act as failure sites, underscoring the importance of determining their strength. This study reports on a novel microshear geometry, and demonstrates its applicability for testing the strength and deformation behavior of IM-metal interfaces in Mg-Al-Ca alloys, a key material for light weight automotive applications. The shear tests are applied to a model bi-layered system grown by magnetron sputtering, comprising of a CaMg2 film deposited onto a Mg layer. A parametric study was performed using finite element modeling to optimize the specimen dimensions. Subsequently, in situ microshear tests conducted inside a scanning electron microscope revealed an interface shear strength of ~136 MPa, and provided insights into the stages of deformation progression. Post mortem examination of the sheared interface revealed an irregular surface indicating ductile deformation at room temperature. |
| title | Microscale deformation of intermetallic-Mg interface under shear loading |
| topic | Materials Science |
| url | https://arxiv.org/abs/2412.12913 |