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Characterization and energy-based model of the magnetomechanical behavior of polycrystalline iron-gallium alloys

机译：多晶铁镓合金磁机械性能的表征和基于能量的模型

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摘要

The actuation and sensing behavior of a typical polycrystalline Fe81.6Ga18.4 alloy sample grown using free stand zone melt (FSZM) manufacturing processes was characterized and its cross-section texture was determined at three transverse stations using electron back-scattering diffraction (EBSD). An attempt was made to model the actuation and sensing behavior of the polycrystalline magnetostrictive sample from its cross-section texture by treating the polycrystal as composed of multiple grains of single crystals, each with a different orientation to the loading axis. The polycrystalline magnetomechanical behavior was modeled as the sum of the volume fraction weighted single-crystal behavior along the [100], [110], [210], [310], [111], [211] and [311] directions, which are modeled using the energy-based approach discussed in Armstrong (1997 J. Appl. Phys. 81 2321) and Atulasimha (2006 PhD Thesis Aerospace Engineering, University of Maryland).
机译：表征了使用自由站立区熔体（FSZM）制造过程生长的典型多晶Fe81.6Ga18.4合金样品的致动和感测行为，并使用电子背散射衍射（EBSD）在三个横向位置确定了其横截面织构。试图通过将多晶处理为由多个单晶晶粒组成的多晶磁致伸缩样品的横截面纹理来模拟其致动和传感行为，每个晶粒的取向与加载轴都不同。将多晶磁机械行为建模为沿[100]，[110]，[210]，[310]，[111]，[211]和[311]方向的体积分数加权单晶行为之和。使用Armstrong（1997 J. Appl。Phys。81 2321）和Atulasimha（2006马里兰大学航空航天工程博士学位）中讨论的基于能量的方法对模型进行建模。

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