About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
|
Presentation Title |
About the Plasticity of Metals upon Phase Transformation – A High Temperature Nanoindentation Study |
Author(s) |
Verena Maier-Kiener, Lea Lumper |
On-Site Speaker (Planned) |
Verena Maier-Kiener |
Abstract Scope |
Nanoindentation became a versatile tool for assessing local mechanical properties far beyond hardness and modulus. By adjusting standard nanoindentation methods, it was possible to receive measurement protocols such as nanoindentation strain-rate jump or long-term creep tests designed especially to probe thermally activated deformation processes. A further newly introduced field of application for high temperature nanoindentation as a complimentary method is studying the mechanics of plasticity upon bulk phase transformations. In the presented study, bell-bronze Cu20Sn was intensively investigated regarding phase transformations and corresponding local mechanical properties. Within this alloying system various different high-temperature phases were adjusted by different heat treatments accompanied with subsequent quenching. Afterwards these alloys were detailed investigated by different microscopy techniques, XRD as well as high temperature nanoindentation. Two previously unknown meta stable phases were discovered. For all adjusted phases, the local mechanical properties were measured over temperature to shed light into their thermally activated deformation behavior. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, High-Temperature Materials, Mechanical Properties |