A numerical simulation of shock experiments on Cerium is reported in the present, by using a multiphase equation of state (MEOS) , a multiphase Steinberg-Guinan (MSG) constitutive model and non-equilibrium phase transition process for Cerium. A volume change of about 15% occurs when Cerium is subject to high pressure (~0.7 GPa) and γ→α phase change takes place. The phase transition and constitutive model are coupling and it is hard to distinguish by single experiment. The passive confined pressure SHPB test method can give the pressure-volume under dynamic loading and release including the phase transition character of Cerium. The free surface/window velocity which coupling the information of phase transition and constitutive model can also be given by the plane impact experiment. This is an attempt by two kinds of experiment to obtaining a multiphase equation of state, constitutive model and non-equilibrium phase transition equation.
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29 March 2012
SHOCK COMPRESSION OF CONDENSED MATTER - 2011: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
26 June–1 July 2011
Chicago, Illinois
Research Article|
March 29 2012
Study on the kinetics of γ and α phase transition in cerium material
Hu Xiaomian;
Hu Xiaomian
LCP, Institute of Applied Physics and Computational Mathematics, Beijing 100088,
China
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Pan Hao;
Pan Hao
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900,
China
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Dai Chengda
Dai Chengda
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900,
China
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AIP Conf. Proc. 1426, 1567–1570 (2012)
Citation
Hu Xiaomian, Pan Hao, Dai Chengda; Study on the kinetics of γ and α phase transition in cerium material. AIP Conf. Proc. 29 March 2012; 1426 (1): 1567–1570. https://doi.org/10.1063/1.3686583
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