| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
In situ nanoindentation of a soft three phase eutectic exhibiting non-uniform pile-up |
| Author(s) |
Forrest Wissuchek, Didem Kaplan, Ayşe Ecem Yürük, Melis Şerefoğlu, Amit Misra |
| On-Site Speaker (Planned) |
Forrest Wissuchek |
| Abstract Scope |
Three phase eutectics formed by the rotational directional solidification of the In-Bi-Sn alloy at the ternary eutectic composition form different morphologies which depend on the anisotropy of the interphase boundaries, the rotation angle, and the distance from the center of rotation. During deformation, the distribution of interphase boundaries affects the transfer of plastic strain between phases. In this study, nanoindentation is used to compare the deformation of lamellar morphologies with parallel interfaces and transient morphologies with tortuous interfaces. Post-indent scanning electron microscopy (SEM) and scanning probe microscopy (SPM) reveal non-uniform pile-up around the Berkovich indent. During nanoindentation viewed in situ via SEM, the surface around the indent deforms non-uniformly. The softest phase accommodates a disproportionate amount of plastic strain by extruding from the surface. In this study, the role of interphase boundary distribution on the co-deformation of the multiphase eutectic is investigated by comparing the deformation of the surface of the plastic zone in situ. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, |