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Magnetic field-induced martensitic phase transformation in magnetic shape memory alloys: Modeling and experiments |
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| Affiliation: | 1. Department of Aerospace Engineering, Texas A&M University, College Station, TX 77843, USA;2. Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA;3. Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, USA;1. State IJR Center of Aerospace Design and Additive Manufacturing, Northwestern Polytechnical University, Xi''an, Shaanxi 710072, China;2. IMSIA, UMR 8193 CNRS-EDF-CEA-ENSTA, Université Paris Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France;1. UME-MS, ENSTA-Paristech, Palaiseau, France;2. School of Civil Engineering, Wuhan University, Wuhan, China;3. Northwestern Polytechnic University, Xi’an, China;1. Materials Science and Engineering, Boise State University, Boise, ID, USA;2. Electrical and Computer Engineering, Boise State University, Boise, ID, USA;3. School of Engineering Science, Lappeenranta University of Technology, Savonlinna, Finland |
| Abstract: | In this work, a continuum based model of the magnetic field induced phase transformation (FIPT) for magnetic shape memory alloys (MSMA) is developed. Hysteretic material behaviors are considered through the introduction of internal state variables. A Gibbs free energy is proposed using group invariant theory and the coupled constitutive equations are derived in a thermodynamically consistent way. An experimental procedure of FIPT in NiMnCoIn MSMA single crystals, which can operate under high blocking stress, is described. The model is then reduced to a 1-D form and the material parameter identification from the experimental results is discussed. Model predictions of magneto-thermo-mechanical loading conditions are presented and compared to experiments. |
| Keywords: | Magnetic shape memory alloys Magneto-mechanical coupling Single crystal anisotropy Constitutive modeling Experiments and calibrations |
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