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Experimental study on the anisotropic behavior of textured NiTi pseudoelastic shape memory alloys

机译:NiTi伪弹性形状记忆合金各向异性行为的实验研究

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摘要

The pre-textured NiTi SMAs are used in the mechanical testing. The pseudoelastic defect and the anisotropic behaviors of SMA are observed. Material behaviors such as Young's modulus, transformation stress and the recoverable transformation strain are analyzed experimentally. The results show that the material behaviors of the textural SMAs are closely related to the orientation to the rolling direction. The transformation stress and Young's modulus get the maximum values with the cutting direction to the rolling direction at 70°. For the recoverable transformation strain, it reaches the maximum values at 30° between the cutting direction to the rolling direction.
机译:预制的NiTi SMA用于机械测试。观察到SMA的伪弹性缺陷和各向异性行为。实验分析了材料的行为,如杨氏模量,相变应力和可恢复相变应变。结果表明,织构SMA的材料行为与轧制方向密切相关。相变应力和杨氏模量在切削方向相对于轧制方向为70°时达到最大值。对于可恢复的相变应变,它在切削方向与轧制方向之间的30°处达到最大值。

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