About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Purveyors of Processing Science and ICME: A SMD Symposium to Honor the Many Contributions of Taylan Altan, Wei Tsu Wu, Soo-Ik Oh, and Lee Semiatin
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Presentation Title |
Regulating Plastic Deformation by Structural Phase Transformations and Cice Vesa for Unprecedented Mechanical Properties |
Author(s) |
Yunzhi Wang |
On-Site Speaker (Planned) |
Yunzhi Wang |
Abstract Scope |
In crystalline solids, plastic deformation can be carried out by dislocations, mechanical twinning (TWIP) and/or structural phase transformations (TRIP), while elastic deformation can be carried out by changing bond length and angle (intrinsic elasticity) and/or reversible structural phase transformations (pseudo-elasticity). All these plasticity and elasticity carriers could be intrinsically coupled together during a deformation process, which is particularly true in polymorphic crystals. In this presentation, using specific examples found in Ti-alloys, TiNi-shape memory alloys and Ni-base superalloys, we analyze such intrinsic couplings, either static or dynamic in nature, and demonstrate how they regulate the elastic and plastic deformation behavior of the alloys. Efficient and Judicious utilization of such couplings in alloy design and thermomechanical treatment could lead to unprecedented properties. This work is supported by DOE/BES program and NSF/DMREF program. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |