About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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30 Years of Nanoindentation with the Oliver-Pharr Method and Beyond
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Presentation Title |
High-temperature Scanning Indentation: A New Technique to Assess Microstructural Changes Along Thermal Ramping |
Author(s) |
Gabrielle Tiphene, Paul Baral, Solène Comby-Dassonneville, Gaylord Guillonneau, Guillaume Kermouche, Jean-Michel Bergheau, Warren Oliver, Jean-Luc Loubet |
On-Site Speaker (Planned) |
Gabrielle Tiphene |
Abstract Scope |
Thanks to recent developments in high temperature nanoindentation testing, investigation of thermally activated mechanisms at small length scales can now be conducted [1]. In-situ anisothermal measurements at the micron-scale of hardness, Young modulus and creep properties are now feasible. The development of the High Temperature Scanning Indentation [2] technique, based on a specific high-speed loading procedure, allows quasi-continuous determination of those properties in temperature in only few hours. We focus here on cold-rolled pure aluminum that undergoes static recovery and recrystallization during an annealing thermal cycle. Hardness upon heating and cooling varies in a different manner, pointing out the occurrence of those phenomena upon heating. Part of the observed hardness drop was related to recrystallization, assessed by post-mortem EBSD microstructural characterizations. Modeling of those phenomena was carried out to characterize their kinetics.
[1] Baral et al., Materials and Design, (2018)
[2] Tiphéne et al., Journal of Material Research, (2021) |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Other, Other |