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In-situ studies of stress- and magnetic-field-induced phase transformation in a polymer-bonded Ni-Co-Mn-In composite

机译:聚合物键合Ni-Co-Mn-In复合材料中应力和磁场引起的相变的原位研究

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摘要

A polymer-bonded Ni_(45)Co_5Mn_(36.6)In_(13.4) ferromagnetic shape-memory composite was fabricated, having magnetic-field-driven shape recovery properties. The thermo-magnetization curves of the composite suggested that the magnetic-field-induced reverse martensitic transformation occurs in the composite. The effects of temperature, stress, and magnetic-field on the phase transformation properties were systematically investigated using an in-situ high-energy X-ray diffraction technique. A temperature-induced reversible martensitic phase transformation was confirmed within the composite, showing a broad phase transformation interval. Stress-induced highly textured martensite was observed in the composite during uniaxial compressive loading, with a residual strain after unloading. The origin of the textured martensite can be explained by the grain-orientation-dependent Bain distortion energy. A recovery strain of ~1.76% along the compression direction was evidenced in the pre-strained composite with an applied magnetic-field of 5T. This recovery was caused by the magnetic-field-induced reverse martensitic phase transformation. The phase transformation properties of the ferromagnetic shape-memory composite, different from its bulk alloys, can be well explained by the Clausius-Clapeyron relation. The large magnetic-field-induced strain, together with good ductility and low cost, make the polymer-bonded Ni-Co-Mn-In composites potential candidates for magnetic-field-driven actuators.
机译:制备了具有磁场驱动的形状恢复特性的聚合物键合的Ni_(45)Co_5Mn_(36.6)In_(13.4)铁磁形状记忆复合材料。复合材料的热磁化曲线表明,复合材料中发生了磁场诱导的马氏体逆相变。使用原位高能X射线衍射技术系统地研究了温度,应力和磁场对相变特性的影响。在复合材料中证实了温度诱导的可逆马氏体相变,显示出宽的相变间隔。在单轴压缩加载过程中,复合材料中观察到应力诱导的高织构马氏体,在卸载后会产生残余应变。织构马氏体的起源可以通过晶粒取向相关的贝恩畸变能量来解释。在施加5T磁场的预应变复合材料中,沿压缩方向的回复应变为〜1.76%。这种恢复是由磁场引起的马氏体逆相变引起的。铁氧体形状记忆复合材料的相变特性与其块状合金不同,可通过克劳修斯-克拉珀龙关系很好地解释。较大的磁场感应应变,以及良好的延展性和低成本,使得聚合物键合的Ni-Co-Mn-In复合材料成为了磁场驱动执行器的潜在候选材料。

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  • 来源
    《Materials Science and Engineering》 |2010年第15期|p.3561-3571|共11页
  • 作者单位

    Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China;

    Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;

    Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China;

    School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;

    Department of Physics, Northern Illinois University, DeKalb, IL 60115, USA;

    Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA;

    Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA;

    X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    shape memory alloys (SMAs); X-ray diffraction (XRD); phase transformation; magnetic-field-induced strain;

    机译:形状记忆合金(SMA);X射线衍射(XRD);相变磁场感应应变;

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