arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0806.1404cond-mat.mtrl-sci
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功能复合材料中的压印偏应力

Imprinting bias stress in functional composites

V. Khovaylo, V. Koledov, E. Perov, V. Shavrov, G. Lebedev, D. Zakharov, M. Ohtsuka, V. Pushin, H. Miki, T. Takagi

摘要:

我们提出了一个简单而有效的方法,它允许一个获得大的可逆形状变化的形状记忆复合材料没有训练过程。它是基于在形状记忆层中人工产生的强各向异性马氏体微观结构的守恒。这一过程导致形状记忆层转变为奥氏体时产生应力场,从而产生双向形状记忆效应。利用该方法制备了厚度为60 μm的TiNi基复合材料,可获得0.9%的可逆弯曲变形。它还建议,这种方法的实施过程中制备的压电或磁致伸缩复合材料允许压印偏置应力,从而改善其特性,而不使用的外部负载。

英文摘要:

We propose a simple yet effective method which allows one to attain large reversible shape changes in shape memory bimetallic composites without training procedure. It is based on the conservation of strongly anisotropic martensite microstructure artificially created in the shape memory layer. This procedure results in appearance of stress field when the shape memory layer is transformed to the austenitic state which brings about two-way shape memory effect. Utilization of this method for preparation of TiNi-based composite with a thickness of 60 μm allowed us to achieve 0.9% reversible bending deformation. It is also suggested that the implementation of this method during preparation of piezoelectric or magnetostrictive composites permits to imprint bias stress and thus to improve their characteristics without use of an external load.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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