Abstract Nano-width martensite plates in a fully martensitic Ni50Ti50 alloy are indexed successfully by using the off-axis transmission Kikuchi diffraction in scanning electron microscope (i.e., SEM-based TKD). The data obtained by SEM-TKD are effectively interpreted using an improved approach based on the framework of the theoretical groupoid structure method, where the equivalent variants transformed from the monoclinic variants are introduced to calculate all theoretical axis/angle pairs of rotation, and to formulate a complete list of source martensite to target martensite pairs. Consequently, B19′ monoclinic martensite variants in NiTi alloys are identified unambiguously, by using numerical comparison between the experimental and theoretical rotation components, without the reference of retained parent phase.

中文翻译：

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通过基于扫描电子显微镜的透射菊池衍射和改进的群状结构方法鉴定完全单斜马氏体 Ni50Ti50 合金中的纳米宽度变体

摘要 利用扫描电子显微镜中的离轴透射菊池衍射（即基于SEM 的TKD）成功地标定了全马氏体Ni50Ti50 合金中纳米宽度的马氏体板。SEM-TKD 获得的数据使用基于理论群状结构方法框架的改进方法进行有效解释，其中引入由单斜变体转化而来的等效变体来计算所有理论轴/角旋转对，并公式化源马氏体到目标马氏体对的完整列表。因此，通过使用实验和理论旋转分量之间的数值比较，在没有保留母相参考的情况下，明确确定了 NiTi 合金中的 B19' 单斜马氏体变体。