Abstract Habit plane variants (HPVs) are traditionally used as the fundamental microstructure unit in micromechanical models of shape memory alloys. Recently, an approach using Correspondence Variants (CVs) has emerged. Previous research has shown that HPVs cannot completely explain superelastic deformation of Nitinol, especially beyond initiation of the martensitic phase transformation that gives rise to superelasticity. In this work, a statistical comparison of both modeling approaches is presented for the case of superelastic Nitinol subjected to uniaxial tension and uniaxial compression. Specifically, volume fractions of variants that contribute to deformation were calculated using the two models and then compared. The relative differences were found to be about 30% in tension and 10% in compression at high strains. Allowing detwinning to occur in the HPV model reduced the relative differences in CV volume fractions to about 20% in tension.

中文翻译：

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使用习性平面变体与对应变体建模的超弹性变形 NiTi 中预测马氏体变体体积分数的统计变化

摘要 习惯平面变体 (HPV) 传统上用作形状记忆合金微机械模型中的基本微结构单元。最近，出现了一种使用对应变体 (CV) 的方法。先前的研究表明，HPV 不能完全解释镍钛诺的超弹性变形，尤其是在引发超弹性的马氏体相变开始之后。在这项工作中，针对超弹性镍钛诺承受单轴拉伸和单轴压缩的情况，对两种建模方法进行了统计比较。具体而言，使用两种模型计算了导致变形的变体的体积分数，然后进行了比较。发现在高应变下，相对差异大约为 30% 的拉伸和 10% 的压缩。