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|Title:||Atomistic study on the super-elasticity of single crystal bulk NiTi shape memory alloy under adiabatic condition||Authors:||Wang, Bing
|Keywords:||Engineering::Mechanical engineering||Issue Date:||2017||Source:||Wang, B., Kang, G., Kan, Q., Wu, W., Zhou, K., & Yu, C. (2018). Atomistic study on the super-elasticity of single crystal bulk NiTi shape memory alloy under adiabatic condition. Computational Materials Science, 142, 38-46. doi:10.1016/j.commatsci.2017.10.011||Journal:||Computational Materials Science||Abstract:||The temperature-induced phase transition and the super-elasticity (from the stress-induced phase transition) of equiatomic single crystal bulk NiTi shape memory alloys are investigated by the molecular dynamics method. By the simulation to the thermo-mechanical response of the single crystal NiTi alloy along the 〈0 0 1〉B2 under the compression/unloading and an adiabatic condition, the temperature change and the nucleation and growth of martensite transformation during the compression/unloading are discussed. The simulated results of molecular dynamics show that the single crystal bulk NiTi shape memory alloy exhibits a significant temperature change during the martensite transformation and its reverse under an adiabatic condition; moreover, a localized instability occurs apparently in the process of martensite transformation, which is closely related to the nucleation and growth rates of martensite phase; finally the effect of model size and strain rate on the thermo-mechanical response of the single crystal bulk NiTi alloy is also discussed, and no instability is observed in the simulated stress-strain curves if the model size is relatively larger, e.g., 8V0 and 13.824V0.||URI:||https://hdl.handle.net/10356/138390||ISSN:||0927-0256||DOI:||10.1016/j.commatsci.2017.10.011||Rights:||© 2017 Elsevier B.V. All rights reserved. This paper was published in Computational Materials Science and is made available with permission of Elsevier B.V.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||MAE Journal Articles|
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