About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Effect of Temperature and Composition on the Superelasticity of SrNi2P2 Single Crystal |
Author(s) |
Shuyang Xiao, Juan Schmidt, Gorgen-Lesseux Guilherme, Paul Canfield, Seok-Woo Lee |
On-Site Speaker (Planned) |
Shuyang Xiao |
Abstract Scope |
SrNi2P2 , one of ThCr2Si2-type intermetallic compounds, has been discovered to exhibit the ultrahigh elastic strain limit of ~18% via forming and breaking P-P bonds. The process of forming and breaking P-P bonds must be strongly sensitive to temperature change and elemental doping. In this work, therefore, the effects of temperature and composition on superelasticity of SrNi2P2 have been investigated. We have developed the state-of-the-art in-situ cryogenic nanomechanical tester to study the temperature effect on superelasticity of pristine SrNi2P2. SrNi2-XRhxP2 (x = 0.2, 0.3, 0.4) were also studied to understand how Rh-doping modifies the lattice structure and the superelastic behavior. It was found that both the critical stress and strain of lattice collapse are significantly affected by temperature and composition. Also, we discovered the deformation-induced structural stabilization due to the metastable state of as-received doped samples. Our results provide a fundamental insight into understanding the superelasticity of ThCr2Si2-type intermetallic compounds. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Composites, |