Experimental study of the multiaxial ferroelastic behavior of Tb0.3Dy0.7Fe1.95 alloys

Pei YM; Fang DN

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Experimental study of the multiaxial ferroelastic behavior of Tb0.3Dy0.7Fe1.95 alloys

机译：Tb0.3Dy0.7Fe1.95合金多轴铁弹性行为的实验研究

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A magnetic field was applied to a +AFs-110+AF0- oriented polycrystalline rod of the alloy Tb0.3Dy0.7Fe1.95 at a range of angles theta to the compressive stress along the rod axis. The nonlinear hysteretic responses were measured simultaneously+ADs- they were different from those in an axial magnetic field. First, the axial saturation magnetization and magnetostriction both decreased with the increase of theta due to the domain rotation away from the axial direction. Second, the saturation magnetization decreased at a nonzero angle when the pre-stress increased. However, they reached almost the same saturation value when theta +AD0- 0 degrees. Third, the magnetostriction increased to a maximum and then decreased as the applied magnetic field further increased. An attempt has been made to explain the ferroelastic behavior by taking into account the competition of magnetic field and compressive stress on the domain rotation.

机译：将磁场以沿杆轴的压应力的角度θ范围在Tb0.3Dy0.7Fe1.95合金的+ AFs-110 + AF0取向的多晶棒上施加磁场。同时测量了非线性磁滞响应+ ADs-它们不同于轴向磁场中的磁滞响应。首先，由于磁畴旋转远离轴向，轴向饱和磁化强度和磁致伸缩都随着θ的增加而减小。第二，当预应力增加时，饱和磁化强度将以非零角度减小。但是，当θ+ AD0-0度时，它们达到几乎相同的饱和度值。第三，随着施加的磁场进一步增大，磁致伸缩增大到最大，然后减小。尝试通过考虑磁场竞争和压应力对畴旋转的作用来解释铁弹性行为。

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《Smart Materials & Structures》 |2008年第6期|共6页
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Pei YM; Fang DN;
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中图分类工程材料学;
关键词
IRON-ALLOYS+ADs- TERFENOL-D+ADs- MAGNETOSTRICTION+ADs- CRYSTALS+ADs- MAGNETIZATION+ADs- ANISOTROPY+ADs- STRESS;

机译：铁合金+广告-萜烯-D +广告-磁致伸缩+广告-晶体+广告-磁化+广告-各向异性+广告-应力;

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Experimental study of the multiaxial ferroelastic behavior of Tb0.3Dy0.7Fe1.95 alloys

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