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THERMOMECHANICAL BEHAVIOUR OF SHAPE MEMORY ALLOY TAYLOR'S MODEL

机译:形状记忆合金泰勒模型的热力学行为

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摘要

In this work, we study the shape memory alloys (S.M.A) micromechanical behaviour of single and polycrystal in the perfect transformation plasticity using Taylor's approach. This study is based on the kinematical description of the physical mechanisms at the origin of the phenomenon, and on the thermodynamical analysis of the irreversible processes presented by these alloys in such a transformation. The pseudoelastical behaviour of S.M.A is described by defining a pseudoelastical potential through the Gibbs theory, and by application of the second principle of the thermodynamic. We also put out the contribution of the variant's reorientation mechanism to the micromechanical behaviour.
机译:在这项工作中,我们使用泰勒(Taylor's)方法研究了单晶和多晶形状记忆合金(S.M.A)在完美的可塑性中的微机械性能。这项研究基于现象起源的物理机理的运动学描述,以及对这些合金在这种转变中所表现出的不可逆过程的热力学分析。通过吉布斯(Gibbs)理论定义伪弹性势,并应用热力学的第二原理来描述S.M.A的伪弹性行为。我们还提出了变体的重新定向机制对微机械行为的贡献。

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