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The Microstructure and Mechanical Properties of Magnetic Shape Memory Alloys NiCo40+xAl30-x [X=0、 3、 6、 10]

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Advanced Composites for Aerospace, Marine, and Land Applications

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Abstract

Detailed investigations of the microstructure and mechanical properties of NiCo40+xAl30-x(X=0、 3、 6、 10) alloys have been performed. The results revealed that the microstructure of specimens were consisted of the primary dendrite and inter-dendritic eutectic structure (γ+ßtwo phase structure), and martensitic arise in matrix phase emerge good self-accommodation effect. The martensitic transition temperature of sample with high content Co-Al ratio was above room temperature. The mechanical studied by both hardness and compressive test. The γ phase appears better ductility than ß phase. Hence the mechanical properties of the specimens were significantly improved with the volume fraction of γ phase. While the volume fraction of γ phase from 6% to 63% and the compressive strength from 2759 MPa to 3455 MPa, respectively. In addition, the compressive strain of alloys rise over 45%.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Southeast University, Nanjing, Jiangsu, 211189, PR China

    Jia Ju, Feng Xue, Jian Zhou & Jing Bai

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  1. Jia Ju
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  2. Feng Xue
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  3. Jian Zhou
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  4. Jing Bai
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  5. Huan Liu
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Editors and Affiliations

  1. U.S. Army Research Laboratory, USA

    Tomoko Sano (Materials Engineer) (Materials Engineer)

  2. Department of Mechanical Engineering, University of Akron, USA

    T. S. Srivatsan (Professor of Materials Science and Engineering) (Professor of Materials Science and Engineering)

  3. GE Aviation, Cincinnati, Ohio, USA

    Michael W. Peretti (Director, Advanced Programs) (Director, Advanced Programs)

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© 2014 TMS (The Minerals, Metals & Materials Society)

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Ju, J., Xue, F., Zhou, J., Bai, J., Liu, H. (2014). The Microstructure and Mechanical Properties of Magnetic Shape Memory Alloys NiCo40+xAl30-x [X=0、 3、 6、 10]. In: Sano, T., Srivatsan, T.S., Peretti, M.W. (eds) Advanced Composites for Aerospace, Marine, and Land Applications. Springer, Cham. https://doi.org/10.1007/978-3-319-48096-1_9

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  • DOI: https://doi.org/10.1007/978-3-319-48096-1_9

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-48592-8

  • Online ISBN: 978-3-319-48096-1

  • eBook Packages: EngineeringEngineering (R0)

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