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A sharp interface model of compatible twin patterns in shape memory alloys

机译：形状记忆合金中兼容双晶模式的清晰界面模型

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摘要

The cubicorthorhombic shape memory alloy system is studied using a sharp interface model based on the linear theory of compatible laminates. A computational method is developed to generate all possible compatible laminates for a given state of strain, and check whether these laminates satisfy exact compatibility conditions. The type of austenite-martensite interface that can form is dependent upon the detail of the martensite structure; the formation of flat and wedge-like austenitemartensite interfaces is explored. A full search is used to reveal the routes in strain space along which the two-phase structure can continuously evolve. A variety of laminate structures, some well known and some new, are reported. The methods developed are readily applied to other crystal systems, such as the tetragonal crystal system, in shape memory alloys or related materials.
机译：使用基于相容层合物线性理论的尖锐界面模型研究立方斜方晶形状记忆合金系统。开发了一种计算方法以针对给定的应变状态生成所有可能的兼容层压板，并检查这些层压板是否满足精确的相容性条件。可以形成的奥氏体-马氏体界面的类型取决于马氏体结构的细节。探索了平坦和楔形奥氏体马氏体界面的形成。完整搜索用于揭示应变空间中两相结构可以连续演化的路径。报道了多种层压结构，一些是众所周知的，一些是新的。所开发的方法可以容易地应用于形状记忆合金或相关材料中的其他晶体系统，例如四方晶体系统。

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